AD-A107 432 WEATHER WING 1ST )HICKA M AFB HI F/6 4/2'

A UG8ERMINAL FORECAST REFE RENCE NOTEBOOK, CAMP CASEY, KOREA U)

UNCLASSIFIED 1W W1TFHN/AS 002 SBIE-AO-E8G0 10O N L

loo.mIhE ohhEmml lIMEMEfLffffffffffll

I Lflllfffffffff

11111 1132 1112.2

11111L25 -4

MICROCOPY RI S-t u I ION UlST I (ARI

NA'i N , 'AN

PHOTOGRAPH THIS SHEET D - E S0 /0f

LEVEL INVENTORY

DOCUMENT IDENTIFICATION

&.APPIO"d fm Puberelease;Dbbibtion Un~Imted

DISTRIBUTION STATEMENT

ACCESSION FORNTIS GRA&I D I

ic TDTICJNANNOUNCED El ELECTENOV 18 1981JUSTIFICATION S NOV 18CTEi

BY DDISTRIBUTION /AVAILABILITY CODESDIST AVAIL AND/OR SPECIAL DATE ACCESSIONED

'rigInal contains Colop

Slates: All DTIC reproduct.lons Will be 1n black and

DISTRIBUTION STAMP Whites

81 11 06 048

DATE RECEIVED IN DTIC

PHOTOGRAPH THIS SHEET AND RETURN TO DTIC-DDA-2

FORM70 DOCUMENT PROCESSING SHEETDTIC OCT 79 70A

TERMINAL FORECAST

REFERENCE NOTEBOOK

DETACHMEIJT2O

< 30TH WEATHER SQCAMP CASEY, REPUBLIC OF KOREA

(NOTJE, THIS TFRN ALSO CONTAINS INFORMATION FOR

CAMP STANLEY (OL-A) AND CAMP STANTON (OL-B))

Preparation Date: i AUGUST 1981

APPROVED FOR PUBLIC RELEASE;

DISTRIBUTION UNLIMITED

-,

SECURITY CLASSIFICATION OF THIS PAGE (When DataEntered),

REPORT DOCUMENTATION PAGE READ INSTRUCTIONSRPM TGB E COMPLETING FORM1. REPORT NUMBER 2. GOVT ACCESSION NO, 3. RECIPIENT'S CATALOG NUMBER

lWW/TFN/81/002I

4. TITLE (wnd Subtitle) 5. TYPE OF REPORT & PERIOD COVERED

Terminal Forecast Reference NotebookCamp Casey (OL-A, OL-B), Korea 6. PERFORMING OG. REPORT NUMBER

Detachment 20, 30th Weather Squadron

7. AUTHOR(*) 8. CONTRACT OR GRANT NUMBER(S)

9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. PROGRAM ELEMENT. PROJECT. TASK

AREA & WORK UNIT NUMBERS

Detachment 2030th Weather Squadronram~p VAA Kflrma

II. CONTROLLING OFFICE NAME AND ADDRESS 12. REPORT DATE

1 AUG 8113. NUMBER OF PAGES

3814. MONITORING AGENCY NAME & ADDRESS(If different from Controlling Office) 15. SECURITY CLASS. (of this report)

Unclassified

15a. DECL ASSIFICATION/DOWNGRADINGSCHEDULE

16. DISTRIBUTION STATEMENT (of thie Report)

Approved for public release; distribution unlimited

17. DISTRIBUTION STATEMENT (of the aetract entered in Block 20, If different from Report)

1. SUPPLEMENTARY NOTES

19. KEY WORDS (Continue on reverese side if necessary and identify by block number)

Meteorology, Meteorological Instruments, Instrumentation, MeteorologicalPhenomena, Synoptic Meteorology, Weather Forecasting, Weather, Forecasting,Climate, Korea, South Korea, Topography, Camp Casey, Camp Stanley, CampStanton, Climatology, TFRN, Forecast guide lines, Weather Forecasting

20. ABSTRACT (Continue on reveres side If necessary and Identify by block number)

This publication provides weather forecasting guidelines for Camp Casey,Camp Stanley, and Camp Stanton. All of which are located in the Republic ofKorea. The types of guidelines contained in this study are: location,topography, local effects, weather impact on supported units, synopticclimatology, and terminal forecast work and preparation sheets. Also includedare AWS Climatic Briefs for each station.

DD JR73 1473 EDITION OF I NOV 65 IS OBSOLETE UNCLASSIFIED

SECURITY CLASSIFICATION OF THIS PAGE (When Date Entered)

Review and Approval Statement

This report is approved for public release. There is no

objection to unlimited distribution of this report to the

public at large, or by DTIC to the National Technical

Information Service (NTIS).

This technical report has been reviewed and is approved for

publication.

WAYNE . MCCOLLOM, ChiefTechnical Information Section

USAFETAC/TST

FOR THE COMMANDER

ALERS BURGMANNAWS Scientific and Technical

Information Officer (STINFO)

28 OCT 1981

TFRN

RECORD OF CHANGES

Change No._ Chanige Date Pag es Affectedc Date Posted Initials

II~ ___ ___ ___ ____ ___ _ _ ___ ____ ___ ___ ___ _ __ ___ ___ _ I

TFRN

RECORD OF REVIEW

Grade Name Date Reviewed Grade Name Date Reviewed

TABLE OF CONTENTS

Section A - Location, Topography, and Local Effects ......... A-i

Republic of Korea .... . .. .. . .. ... .. .. . ... . ... . .. . . .... . .. A-2

Cam~p Stanley *.....................................e... A-S

Map 1, Northwest Republic of Korea (1: 250,000 scalecompositite of NJ 52-5 and NJ 52-9 maps, series 1501) ... A-10

Map 2, Camp Casey area (1:50,000 scale map, 31211,series L752) .. . . . .......... ...... *.*** *. . .... . ......**** . ... ** A-li

Map 3, Camp Stanley area (1:50,000 scale composite of31211 and 312111 maps, series L752) .................. A-12

Map 4, Camp Stanton area (1:50,000 scale composite of31211, 312111, 3121111,'and 3121IV, series L752) ........ A-13

Section B - Weather Impact on supported Units ............... B-i

Section C - Synoptic Climatology .................. 0........ C-i

Section D - Rules of Thumb (no approved rules of thumnb on file

Section E - Forecast Studies (no approved studies on file)

Section F - Climatological DATA (AWS Climatic Briefs) ....... F-i

C amp Casey (Tongduchon)......... .. .. . ... . ... .. .. .. . . . .. .. F-2

Camp Stanley (Camp Laguardia) ....................... F-4

Camp Stanton (Tonggo-ri) ...... . .. .... .. .. . .. . .. ....... F-S

Section G - Synoptic Case Studies (filed in Case Study File)

Section H - Terminal Forecast Work and Preparation Sheets . H-1

p

SECTION A

LOCATION, TOPOGRAPHY, AND LOCAL EFFECTS

A-1

[ ... ....... ....... . o _. . . .p

11. Geographical Location and Topography of the Republic of Korea.The Republic, about the size of Indiana, covers 37,700 square miles.The climate of Korea is largely influenced by the world's largestland mass to the west and by the Pacific, the worlds largest ocean,to the east.

a. The peninsula is bounded to the east by the East Sea (alsoknown as the Sea of Japan), to the south by the Korea Strait (alsoknown as the Straits of Tsushima), and to the west by the YellowSea. There are numerous rivers and smaller streams throughout thecountry. The largest river, the Han, consists of two major branches.The Puk (north branch) Han originates in the mountaineous Kwangwon-doprovince in the northwestern portion of the Republic. The Puk Hanflows southwestward to Seoul where it is joined by the Nam (southbranch) Han river. The Nam Han originates in Chungchong-Puktoprovince in the central portion of the country. From Seoul, the Hanflows northwestward and empties into the Yellow Sea. The ImjinRiver also in the northern portion of the Republic, originates innorth Korea. It flows southwestward along the Demilitarized Zone(DMZ) and joins the Han river about 20 miles northwest of Seoul.The Naktong river, which drains the relatively broad interior valleyin the southern part of the Republic, originates from lake Andongin the east-central province of Kyongsang-Pukto. From there, theNaktong river flows southward and empties into the Korea Strait,just west of Pusan. Industry in Korea is still primarily agricul-tural with rice paddies throughout the nation providing a largemoisture source during the summer months.

b. The Republic of Korea extends from north Korea, roughlyalong the 38th parallel, to 340N (excluding Cheju Island). Theterrain of Korea is irregular and, in general, very rugged. Themajor terrain feature is a long mountain chain, the Taebaek mountains,which extends longitudinally along the entire length of the peninsula.This mountainous backbone lies closer to the east coast than thewest with peaks rising over 5000 feet in the central and southernparts. To the east, the mountains drop steeply to the coast.There is a more gradual decrease in elevation west of the range.Numerous rugged hills (peaks to 3000 feet) extend to the westerncoastline. The western and southeastern sectors of the nationconsist of hills and plains which support most of the Republic'sagricultural industry.

2. Geographical Location and Topography of Camp Casey. The postis located in northern Kyonggi-do (province) in the northwesternportion of the Republic. The heliport, H-220, at 37 55 N, 12703 E

is near the northwestern edge of the town of Tongduchon, 20 nauticalmiles north of Seoul, and 19 miles south-southwest of Chorwonwhich is near the Demilitarized Zone (DMZ). Tongduchon is locatedon the eastern boundary of a relatively lowland region in the north-western corner of the Republic. Like most of Korea, however, theterrain around Camp Casey is characterized by irregularly oriented

hills and valleys. Camp Casey lies in the center of the Sin Valleyat an elevation of 196 feet. The Sin Valley, shaped like an

1 US Navy Tech Report 77-03, The Environment of South Korea and

Adjacent Sea Areas, in the unit TFRF, is an excellent referencefor this subject

A-2

inverted "Y", extends northward from Seoul to the DMZ. The areaaround Tongduchon is primarily agricultural, consisting of smallfarms and rice paddies. These farms cover all tillable land leavingonly the steeper, more rocky hills uncultivated. Land unsuitablefor farming has been planted with pine trees which are 10 to 20feet tall.

a. Sin Creek, immediately west of the heliport, flows north-ward into the Imjin River, 7 miles to the north. The Imjin Riverflows southeastward to the Imjin - Han River confluence, 25 mileswest-southwest of Tongduchon. The Han River flows westward to theYellow Sea. The main highway through Tongduchon, and the railroadparallel Sin Creek.

b. The highest terrain in the immediate vicinity of Camp Caseyis a ridgeline to the east which roughly parallels the Sin Valley.The highest peaks in this range are: Soyo, 1726 feet, 1.6 miles tothe northeast; Kuksa, 2474 feet, 4.5 miles east; Wangbang, 2418feet, 5 miles east-southeast; and Haeryong, 2169 feet, 4.5 miles tothe southeast. Mt. Torak, a relatively isolated peak, lies 5.7miles to the south-southwest at 1447 feet. Mt Nogo, at 1316 feetand 7.5 miles to the southwest, is also isolated. Mt Kamak,elevation 2215 feet, is 4.5 miles west-northwest in the range ofhills west of Tongduchon. Mt Mach'a, in a lower range of hillswest of the Sin valley, is 2 miles northwest of the heliport at1926 feet.

3. Location of Camp Casey Weather Equipment (see Fig 1) andRepresentativeness of Surface Observations. The weather station isin building T-2651 which is located at the south end of the heliport.The view from T-2651 to the north and south is relatively unobs-tructed. Ridges east and west of the heliport restrict the viewin those directions.

a. The wind set, AN/GMQ-11, is 1/16 of a mile north of theweather station on top of a hanger (74 feet AGL) immediately westof the runway.

b. The instrument shelter, with psychrometer, is just outsideof building T-2651. It is much too close to the building and alsoinstalled on a cement slab, however, no other stable locationwithin reasonable distance is available.

c. The rain gauge, ML-17, is adjacent to the instrument

shelter.

d. The aneroid barometer, ML-102 D, is in the weather station.

e. The Ceiling light, ML-121, is 1/8 mile north of the weatherstation immediately west of the runway.

4. Camp Casey Local Effects.

a. Mountains northwest and northeast through southeast ofTongduchon afford Camp Casey shelter from storms from those direc-tions. The area from southeast through west is relatively open.

A-3

.... . rmnl i | i I I i ° - -... . ... .. . .. . . . . . ,

*CEILINGnN

9 WIND SETk

2661

FIG 1. CAMP CASEY HELIPORT (H-220)SCALE: 1 INCH EQUALS 100 FEET

WEATHERSTATION

~ RAIN GAUGE

4 * INSTRUMENTSHELTER

4"

A- 4

b. Nearby streams and rice paddies provide an ample sourceof moisture for radiation fog formation.

c. Smoke and haze from Tongduchon industrial sources andsmoke from local home heating units tend to reduce visibility,particularly during fall months when strong, low-level inversionsform. Of particular significance in the fall and winter months,is the common occurrence of dense fog (below minimums) at the mainheliport (H-220) while at the same time the visibility is signifi-cantly higher (VFR) at the 21D CG's helipad (H-221), located only1.8 miles east-northeast.

5. Geographical Location and Topography of Camp Stanley. Thispost is located in central Kyonggi-do (province) in the northwesternportion of the Republic. The heliport, H-207, at 37043'N 127 04'Eis immediately north of a small village (unnamed), 2 nauticalmiles southeast of Uijongbu, 12 miles south-southeast of CampCasey, and about 7 miles north-northeast of the city limits ofSeoul. Camp Stanley lies in the narrow, southern end of the UijongbuValley just west of the major interior plateau region of theRepublic at an elevation of 234 feet. Most of the surroundinghills have some forest cover of small (10 to 15 foot) pine trees.

a. Camp Stanley is between the Sin Creek, 2.2 miles to thewest, and the Wangsuk Creek 3 miles to the east. There are numeroussmall streams (wet season) and rice paddies northwest throughsoutheast of the heliport. Highway 312, north of the post runsnorthwest to Uijongbu.

b. Camp Stanley is generally surrounded by mountains. Thenearest is an isolated 692 foot peak, Puyong-san, just 1 mile northof the post. There is a north-south range just east with peaks:Yongam-san at 1568 feet, 3.1 miles northeast; Sari-bong at 1762feet, 2.7 miles east-northeast; Chongyon-san at 1289 feet, 3 mileseast-southeast; and Taemae-san at 1194 feet, 2,8 miles southeast.Kuksa-bong (not the same as the peak east of Tongduchon describedon page A-3) at 1106 feet is 1.8 miles southeast. Mt Surak, at2093 feet and 1.6 miles southwest, is the tallest peak in the rangewest of Camp Stanley. Tobong-san, at 2352 feet and 4 miles west-southwest, and Sap'ae-san, at 1801 feet and 4.2 miles west, are themajcr peaks in the range west of the Sin Creek.

6. Location of Camp Stanley Weather Equipment (see Fig 2) andRepresentativeness of Surface Observations. The weather stationis in building 2524, 250 feet southwest of the middle of the runway.The view near the weather station is obstructed in all directionsby surrounding buildings.

a. The wind set, AN/GMQ-11, is located 375 feet northwest ofthe weather station on top of the control tower (50 feet AGL) atthe northwest end of the runway. Due to the location of the windset and lack of readout equipment at the weather station, windsare recorded as "estimated". The Beaufort wind scale is employedduring the hours the tower is not open.

A-5

%(

2561

FIG 2. CAMP STANLEY HELIPORT (H-207)

SCALE: 1 INCH EQUALS 100 FEET

A-6

b. The instrument shelter with psychrometer is 60 feetnorthwest of the weather station.

c. The rain gauge, ML-17, is adjacent to the instrument shelter.

d. The aneroid barometer, ML-102 D, is in the weather station.

7. Camp Stanley Local Effects. Visibility is more often restrictedto the north and northwest due to fog and haze in the Uijongbu andTongduchon valleys. Fog is also common in the Pochon valley and atH-202 shortly after heavy rainfall.

8. Geographical Location and Topography of Camp Stanton. The campis located in northwestern Kyonggi-do (province) in the northwesternportion of the Republic. The heliport, H-112 at 370 47'd 126 05JfE,is located on the outskirts of the village of Sinsan-ni, 0.5 nauti-cal miles north of Tonggo-ri, 17 miles southeast of Kaeson, northKorea, and about 15 miles northwest of Seoul. Camp Stanton is onthe eastern boundary of the northwestern coastal plains of theRepublic. The plain extends from the mountains to the east of thepost, to the Han river to the south and west, and to the ImjinRiver to the north and west. The area around the post consistsprimarily of low hills and rice farms. Reforestation projects inthe early 70's have covered most of the hills in the area with 10to 15 foot pine trees.

a. The Munsan Creek, just west of the heliport, flows north-ward to the Imjin River at Munsan, 5 miles northwest of Camp Stanton.The Imjin River flows southwestward along the DMZ to the Han - Imjinconfluence 7 miles west of Sinsan-ni. The Han River flows northwest-ward from Seoul and empties into the Yellow Sea. Highway 312, fromSeoul to Munsan, is oriented north-south just east of the post.

b. Except for the range to the east of Camp Stanton, most ofthe peaks are isolated and fairly low. Kumbyong-san, at 961 feet,is 2.1 miles northeast. Mt Paktal, in a small range to the south-east, is 3 miles southeast with an elevation of 1211 feet. Wollong-san, at 807 feet, is 4.5 miles west. Pongso-san, at 709 feet, is3.3 miles to the northeast. Principle peaks in the range to theeast are: Nogo-san, 1316 feet, 5.3 miles northeast; Umbong-san,1342 feet, 4.2 miles east; Unbong-san, 823 feet, 4.5 miles east-southeast; Mt Aengmu, 2041 feet, 4.5 miles southeast; and Kaemyong-san, 1788 feet, 5.2 miles southeast.

9. Location of Camp Stanton Weather Equipment (see Fig 3) andRepresentativeness of Surface Observations. The weather station,in building T-17, is located east of the center of the runway.The view from the weather station to the south through north-northeast is unobstructed. The village east of the airfield par-tially blocks the view north-northeast through south.

a. The wind set, AN/GMQ-11, is 50 feet south of the weatherstation on top of the ATC tower (35 feet AGL) immediately east ofthe runway.

b. The instrument shelter, with psychrometer, is 180 feet south

of the weather station just east of the runway.

A-7

X I x

x A

IA.WEATHER x

STATION

RAINGAUGE

SHLTOWER SE

IN STRUMENT 2 j

x

/ FIG 3. CAMP STANTON HELIPORT (H-112)SCALE: 1 INCH EQUALS 100 FEET

A-B

c. The rain gauage, ML-17, is adjacent to the weather station.

d. The aneroid barometer, ML-102 D, is in the weather station.

10. Camp Stanton Local Effects.

a. Nearby streams and rice paddies provide an ample sourceof moisture for radiation fog formation.

b. Smoke from local home heating units tends to reduce visi-bility, particularily during the winter months, but lack of industryin this area results in better visibility than at Camp Casey or CampStanley.

A-9

li77

0-aqp Airil 21

CAM STNO

L41<

mapf

08kCAMP CASE

1W -

MAP ~~AM STALE NOT WS E U LC O

KORE-

-2

Is &0

1

071-.5 1 I\ \\

MAI

CAM * Y ((H

A-li d Q~y-

13( 1. . .. . ! 'V.

N ~

4ib

CAM CSE

<K ~ ~ -'--~3O cs1'A . 1

jrQ

16 75. .

"d \V 6~

IL/, - ~ ~ ,~~o

-~ 744 9~

PII

~u> k>-,

2) S t fiL~zr

g' -' ;;"

KU~ ~~ ~~ -m 7 'lUNk "

5eMYy I LE/~

G L;

I ~ n* By

'4110e:)

36* -. *0

Lim 7 .

77 f,"

'A - j . 7:

.C72 ig

4 ~~ - s.

I ~ ~;;g,; ~ * Si 9

-dopy

ce '51~?2-* ~II

y", 2: B .. , * ' /

*,.CE I oLE-1 -

AN TaN

* 295297

* or Al~ ;Ql\ j W~

A 9N, (

fc 10do.,co A0 N --

52 K, JdI ;k ''"a /234

22 ~ z; A2ice"

>~ur - ,~,~ 8Yri4'

Aj ~ o''-T

%:. .~ r :. ~1.0 -:4 L a o~~

iupI4 ~ 1 T - / _o

A - ox atj LL

*iO I try,

4 -4

aN

W. 0

"n 0

I L

/ ~ I. -,

-gr~ a, x 94,y, HeotV-55z *,CiI-'

- ~~~~~I ~ Cft-rte. 4NHiHebf

~~~j~kl~~ SteeLx 0 1

dt-QkI-kO s Ig

-4MILE ik 3MI LE .2ML .- -I - . v.Snid'Torek go CAMP STANTON (H-11a2)

- ~ ya san-k;V .T jIaiaang * * numo$

ni ~4

83____--- ~...--

A

-q ridT- A

u I8

-. ~ ~ ~ ~ ~ I **Id ei tel

* ~ b 7

73 eln

log- /-~

pan2 '%o

... . ..... C - ..

L*

.... ... .....o

A 11 /Ifw7

/1a -

~c r

t/ t

Ki~ ~A~\f

STANON CAR - tdeq h9

_~/7 0___ -

- %~A;41

SECTION B

WEATHER IMPACT ON SUPPORTED UNITS(AIRCRAFT SUPPORTED)

Note: Support requirements to local organizations which have amission degradation due to weather are outlined in Det 20'sweather support plan.

B-1

Units Supported:

a. 2nd AVN BN

b. 4/7 Cavalry; Divarty Avn

c. HQ 2nd Infantry Division

d. 377th Med Co.

1. a. Unit Supported: 2nd AVN BN

b. Mission: Aviation support to the 2nd Infantry Division.

c. Systems/Aircraft assigned:

(1) UH 1 helicopter

(2) OH 58 helicopter

d. Weather Elements Critical to Mission Accomplishment:

(1) Surface Winds at H220

(a) Greater than 20 KTS (MAX for practice Autorota-tions)

(b) Greater than 30 KTS (MAX tailwind Component)

(c) Greater than 35 KTS with crosswind component

(d) Greater than 40 KTS sustained (MAX allowable forparked, unsheltered ACFT)

(e) Gust spread over 15 KTS

(f) Ceilings/vsby less than 500 ft/ mile (take off/landing minimums)

2. a. Unit supported: 4/7 Cavalry; Divarty AVN

b. Mission:

(1) 4/7 Cavalry; perform recon and intelligenceinformation for the 21D.

(2) Divarty Avn; provide aviation support to Divartycommander, including aerial observation and supportfor the Division Artillery.

c. Systems/Aircraft Assigned:

(1) UH 1 helicopter

B-2

(2) AH 1 helicopter

(3) OH 58 helicopter

d. Weather Elements Critical to Mission Accomplishment:

(1) UH 1

(a) Icing: Moderate

(b) Turbulence: Severe

(2) OH 58

(a) Icing: Must avoid all ICING conditions

(b) Turbulence: Severe

(3) AH 1

(a) Icing:

(b) Turbulence:

(4) Tnkeoff/Landing Minimums

(a) H 112: Ceiling: 500 Ft

Visibility: 1 mile

(b) H 207: Ceiling: 500 Ft

Visibility: 1 mile

3. Unit Supported: HQ 2nd Infantry Division Command Section

See SOPs for support provided to HQ 21D.

4. a. Unit Supported: 377th Med CO (DUSTOFF MORTH)

b. Mission: Emergency medical evacuation of personnel

c. Systems/aircraft assigned:

U11 1 helicopter

d. Weather elements critical to mission accomplishment:

(1) Icing: Moderate

(2) Turbulence: Severe

(3) Takeoff/landing minimums: 500/1; these minimumscan be waivered by the Company Commander depending on the natureof the emergency.

B-3

CHARACTERISTICS

Type aircraft: UH-1, "Huey"/"Iroquis", helicopter.

1. True airspeed and normal cruise altitude: 90 kts and 500 to4000 ft.

2. Air refueling capability: No

3. Average flight time capability without refueling: 2 + 30

4. Limitations of operation:

a. Icing: Operates in trace icing conditions.

b. Turbulence: Operates in up to moderate turbulence.

5. Airborne severe weather avoidance capability: No

6. Critical takeoff and landing elements:

a. Maximum prevailing wind: 35 kts.

b. Maximum cross wind: N/A.

c. Maximum gust spread: 15 kts.

d. Minimum cig/vsby: 200 ft and h mi

B-4

CHARACTERISTICS

Type aircraft: OH-58 "Kiows"/"Sky-Scooter", helicopter.

1. True airspeed and normal cruise altitide: 90 kts and 200 to 3000ft.

2. Air refueling capability: No.

3. Average flight time capability without refueling: 3 + 00

4. Limitations of operation:

a. Icing: Avoids all icing conditions.

b. Turbulence: Operates in up to light turbulence.

5. Airborne severe weather avoidance capability: No.

6. Critical takeoff and landing elements:

a. Maximum prevailing wind: 45 kts.

b. Maximum cross winds: N/A

c. Maximum gust spread: 15 kts.

d. Minimum cig/vsby: 500 ft/l mile

B-5

CHARACTERISTICS

Type aircraft: AH-1, "Hueycobra"/"Cobra,: helicopter.

1. True airspeed and normal cruise altitude: 90 kts and 200 to300ft.

2. Air refueling capability: No

3. Average flight time capability without refueling: 3 + 00.

4. Limitations of operation:

a. Icing: Avoids all icing conditions.

b. Turbulence: Operates in up to light turbulence.

5. Airborne severe weather avoidance capability: No

6. Critical takeoff and landing elements:

L a. Maximum prevailing wind: 30 kts

b. Maximum cross wind: N/A

c. Maximum gust spread: 15 kts

d. Minimum cig/vsby: 500 ft and 1 mi

B-6

SECTION C

SYNOPT IC CLIMATOLOGY

C-1

SYNOPTIC CLIMATOLOGY

NONE AVAILABLE AT THIS TIME

C-2

SECTION D

RULES OF THUMB (ROTS)

D-1

RULES OF THUMB

NO APPROVED ROTS ON FILE

D-2

SECTION E

FORECAST STUDIES

E-1

FORECAST STUDIES

NO APPROVED FORECAST STUDIES ON FILE

E-2

SECTION F

CLIMATOLOGICAL DATA

WoIMATIC PERIOD: -3245

Prepared by ETAC (MYT 1968 13755 1 127 03 ELEIAT .N 19 t R2N

TEMPERATURE) PRECIPIT O n) wINO (T) MEAN MEAN NUMER OF DAYs

~IdB ~ ~ Iv~ 11l ~901:O0 3201 -0

JAN 52 117-150.7 14 71 3 4 27 1 4 513 .7 1 67 i..#AFE 8I 14 i _ W oo450 6 1, - 0 6e * * -5

MAR781119.65 IN112 1.26600 B 10 o 9* * * 0 6

j APR 83 6 2 1 4 2 3 2.1, A 00 81533 5 .25 TO 730 000 . I 6000 331 7Wd 6

JUL~g 19 7gj~e * *2

8 LS i~j4~-P2L912

77 .0

AY 9o2 7615 -V -3- 6UEYR19 716 1 1 4 6. 0 8 51- .41411 U Ia -A o *11

NOTE DATA NOT AVAILABLE7 7ESS T 0.5 0.5 OR 0.05 1 R A- 5ERCENT ) AS APPLICABLE.,

FLYING WEATHER (% FRED) HOURS (LST) JA F P AY JUN JUL AUG E OCT NOV4 DEC ANN Y

OC 12-14 _g 4 2 n 0 1

ANN O 1&11 A. __ _i2

1ass tm 41 _ k 5 18 _-_.2 800 1 _

6_.E jY 3"111

1- • I 12 44 L 1 ' - 1 e

P(, Hul b Ro-u 53 No -A ug 67 - Dall 00s Ma-u 53 lia •3 e 65 •e c .66

N00-0, •DZ NO 8VAIL. 9 5. . E MAS A .

lea IO . 30 114 1 i 1 5 10 20 o 14q L

1000 fot 09-U 1 2 122 2 1 27 -9 U . 5-

ad/or 12-14 k 6 ; (

15d-1 -iA . L -u j -g J A. 7 -9 -26 1 1 114

less than .8-20 • 0 • * 0

_ -I a

3 alias a2'1-2 * u 19 • ••ALL SaUm •• 0 • •

0002 l e It_

lees toem o 1 2 o 1 4l L u I 6 j1 -

CIO 06-8 14 _ 12 L8 1 o -3 1 - 2 6- 114

lose themt O -2 .2 AL -1 -2D--2- 2- A 7-. -2- -L

1500 fat6 -)--D

an/ o r 1 9 6 7 8 6 6 -

My/ 15-17 8 7 -- 1 3 + 5 3 #1 3 3 4

laSS ban 18-2A 0 1 1 • •• 1

ALL .. KO R IF " "o ItIMO fas o- -9 _---w 14

lss tha 0s 08 a 0 -lo : o i e *t

I 00 0 2 IF 0 . 0 o I F *• • '

3 2-2 1

A" CLWATIC ShIP AODWII TONGDUCHON/A-220 Al, SO. KOREA PERIO 1953- 6 7 N 43245

Proei!eby ETAC ( PSA lO FN37o55.- 9127003' .1~AIO ~ STN LTRS:FLYING WEATHER NOURS (LST) JAN FED MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN EYE

man number of days 00-02 * * * * 2 14 * * * * *CIG 03-05 14 11 11 11 13 11 4 6 11 9 10 13 124 14

equal to or greater 06-08 8 7 9 9 13 11 5 7 10 8 8 -0Lthan 10000 feet 09-11 9 10 15 16 21 16 9 13 8

and 12-14 is18 19 19 22 15 9 12 18 23 20 191121VSBY 15-17 T0 i9 20 20 23 11 14 20 24 M0 18 22L 14

equal to or greater 18-20 * * * 2 * -2 1 *than 6 miles 21-23_ * * 2 7 * * a * a

ALL HOURS * * * * 19 14 * * * * * **

mean number of days 00-02 * * * * 25 18 * * * * * * * 1CIG 030 41 2 12 16 13 5 7 12 !10 11 13 1136 14

equal to or greater 06-08 8 7 8 -0 1 1M 9 12 IV !10 10 IT I4

than 5000 feet 09-11 10 -11- 16- 8 - 27 1T 15 20 120 15 12 1i7 14and 12-14 19 19 20 20 24 17 10 14 20 25 22 20 230 14VSBY 15-17 .l 210 Ti- 2i 25 20- 13 TV2 -25 -T Y 144 f4-

equal to or greater 71-210 f1 * 25 25 * * * * * *than 6 miles 21-23 * * 2 2T * * * T T T T

ALL HOURS * * 21 17 * * * * * *

mean number of days 00-02 * * * * 2929 * * * * * * * 1CIG 0A- t 27 At At .. 2 26 1 2 -IT IT- AD 4 j04 14

equal to or greater 06-08 24 21 25 24 28 26 22 24 24 23 4 1 26 291 14than 1000 feet 09-11 24 23 28 7302 7 92§ 30 An8 26 329 14

and 12-14 AN At 292x0292y92 31 29 129 347 1VSBY 15-17 -2'5 2-1 If- --O 30- 2V 28I 30f -2V 31 29 129 3481

equal to or greater 1-2 * 1 02 3 * * * *

than 3 miles 21-23 * * * * 29 30 * *1

ALL HOURS * * . 29 28

mean number of days 00-02 * * * * # 0 * 1 * * * a *CIG 0 3- 05 F- 1 1 2 2 1 2 3 1 3 21 14

•less than 06-08 2 2 2 2 1 1 2 3 12 A 2 22 1S500 foot 09-11 # 1 - 1 # 0 # I a 1 81

and/or 12-1A 1 # a L 0 a a 2 14VSBY 15.-I7 # 1 1 11 I l 0 1 a 4 14A

lese than a * * n1 mile 21-21

"" ~ALL HOURS 1 # * * * * * **

FLYING WEATHER 4OURS (LST) JAN FED MAR APR MAY JUN JUL AUG SEP OCTI NOV DEC ANN EYR

S mean number of days 00-02 * * * 28 24 * * a * * * 1

CIG 03-05 25 2224 222421 13 16 21 22 24 25 259 14

equal to or greater 06-08 272T§ 21 1 2 2 12 17 21 1 2 23 44 14

than 3000 feet 09-11 22 21 24 24 27 22 15 20 25 28262427814and 12-14 'M 4 2T I 5 5 21 2 27 293 14VSBY 15-17 27 25 26 25 27 24 18 22 25 29 27 27 302 14

equal to or greater 18-20 * * 30 27 27 * * * * * a a 1than 3 miles 21-23 * * 28 26 a * a a * * 1

4 ALL HOURS * * * 27 22 * * * * a a

mean number of days 00-02 0 a a a 0 * a a a * 1SCIG 03-05 1 # # 1 1 -1- 1 2 2 2 1 1 112 14

Sless than #60 a I 1 1 2 1 1 n IA

200 feet 811!and/or 12-IA A n n A n n n A a I-VSBY 15-17 1 0 8 0 o a

loe than 18-20 a 0 * a aIS mile 21-21 0 0

ALL HOURS • * * # # * * * * * *i

MISCELLANEOUS DATA

Mean number of days Xlear 17 14 12 10 11 6 3 6 9 15 13 16 132 10

ean number of days Cloudy 12 12 16 17 17 2 25 21 17 112 13 12 195 10Maxi-mu snow depth iinches) 6 6 2 0 0 0 0 0 0 0 2 4 6 11

AI *., 42 AWSP 106-4. VOL JELL-

F-3

j'

Via~ "A I T "

*~~f"ef -00"000- -j~4.4er

-~ i,! ~ Al * 000 444444 *0* .. 00

Al ;.4 A 00 00 0 _____

* ~ ~ ~ A l- - 0...0 # 4 4 4 9 S04m4 4 * . 0

"~ 1 *0 0 000 5- - ft-9- - -

OM

00 -S0- .0ss:29

CM0I0 ad 04 *4# 9 4.44 0 .54444 * 0 *

£0 ^0 000000 .4 t______ 0_____

*3333* 3 *9* r-4

-- a.SnS4 m *0*.0# 0. 94- 4p 0 9 0 0 -- m 0 i

-t- Vt: 1. n n t

59 wf0t* P. "W r-a

* vt U t

.44 ~ ~ O 0 5 0 0 0 *5

aF-

AWSCLIMATCBRIEFIToNoD-RzsTA~mo, AAu/T 8.u/A-g. s,KZ o PERIOD: 1953-67 WBA N 4 3244

Pro red by ETAC ( APR 1968 N 37 47 z 126 51 ELETION: 90 ft STN LTRS:TEMPERATUREF) PRECIPITATION (II) WINO (KT) MEAN MEAN NUMBER OF DAYS

~. ~ - ~ TEMPERATUREK*)

j 3Z r Ii ,Ir !z1 I I 1' 2 90 80 32 0lWN a IcI 1-

JAN 5431 1 16 -15 o.I. 1 * NWl _127 61 ,.o835 1 I * 5 * 3 o 4 * 4

FS 60 1 22 -6 o7 1 * SW 42 1 1 o o o I 7q 58 2 . 1 o

MAR 72 4 731 50.322 . 2 5 4 29 .1650 6 1_ 0 C 0 IF 6APR -82'. 61,44 21 2.8 . __ U 0 0 0 2 .2 60 8 2 0 0 0 C 6

-90- 73 5 .0 03 65 6 0 84 2 8

hJUN.100 79 0 62 0 0 W 4 27895921 0 O 050 16 67 lJU 883172 51137.61 0 0s 420 937372 .78 6501 800 3 3 118~ * * 8

AUG 19 0 85 7 3 5 5 8 5 8 3 00 8OS y40 9 63-71c.6 65 5 o of 6. 1C 66SEP 9 2 7760 37. 9 0 N 0.5 219360.52 0 0 ERCEN COC 6 AOCT 8866 462115 0 0 SW 321 91 53 46.31 400 6 100261C 4

/ F Y HOO WEATHR °/A RQ JOUN LB T IAltF MAR ARJUN JULJL AUG E ~NVG ANN '"R

No oov ,, Diy0 0 0 0 21 06 0 0 0 41NOV 72 7 9 0 0W0 07 0 35. 2 0- Q 5

24th -9O N.0 01 0 020 2 31 5 20 0 00 12 1

D H0- 5 67 D 21 8o 5 e 6 F , o 6

ANN 1101 TA 6 - 1 50 A1LLE - L S- - 414o 05 591441 O_.1 05PE2RCN 1 ) 8 6

XeYR ar 1505 1 5-1 0 41 1416 4 1411-11 l i I I I 11 1 -- 5

FL"YING O WE AT A:RE)HUR L JAN F E B MAR APR MAY JUN JUL AUG SEP OCT NOV DEC A NN EYR

00i02 0 0 . 0 0 0 3 56 2 4 0 0 1

le i _ -h_ -N1 2 2 18 2 .0 4 0 02 2 -- 0 0 2 17300 eeu Ob -Olj 6 7 D6 5 63, FbD 64, Ap 65, F -m2ay,9 Au0Do. 66

. 00-021 _ 1 1 * 19 .3 .. ! -2 7CIO lo 148 _.- .2 2.3 14

lor Iz~ m .. . _ I-.. -- 5 x z_ CA 2

81 7 6 2J 8 1 2zg 8 L K~K1

less than 06--0 -O - 28 21 6 1 1 2 72.I~212-... . .

3000ofeet * * .2-o , 1 16 15

9,*o _k -.1 .... 22 __a _ .1-_7-3 _--58 19 2 --- 1 -- 3 - 2 _-1

and/or 12-11t 12 16 7 10 -1 5 -- 1 o 7 -1 j -- --VUBY 1-17 - 12 6 74 _ 9 -16 -12 2 45 -- 6

lesthan 18-20 - - 20 9W- 16 -1 4 P68

ALLHOURS 1 1 92 1 1 15 13014 1 2 23

CIG -0 - - - 4 6 8 12.1 1 9 -3 8 .i 25 7- 4 11 so than 06-8 -- 2 1 116 11 L i 2 40-6 25 8 83z1000 feet 09.U, 2 1 5 10 6 3 8 5 16 33 f1 I __I __3 4and/or 12-4 , 6 4 7 . 5j14 - tQg4 10 54 14

legs t1a i-: -- 6 - -? 3 -2- -I- 7 14

Sj C- 5 C 0

less than1

3O miest 091 1. 1. 1 1 2_ 1 * 1

ALL 1OURS 13 1 1 1 112 8 1 30 15 7 5 6 7 2

lee02 3a 6{# 1_ _.-o 11.116..1

13 1

-V - 82 -WI 20 .4 -0-6 - 5-, VOL .. fL..

li _I F-54 2 3-1 4 4

AW$ CLIMATIC SRIPI ADDINDUM TONGGO- RI/STANTON AAF/TEAH 61l/A-9, PERIOD:] 9 5 3- 6 7 WBAN 43244

PreparedhyETAC (APR 1968 SO. KOREA N37 47' E126 51' E- f . NLTRS 2sp., ~~~ IONc •EL~T : an (tjSTN LTRS;FLYING WEATHER HOURS (LST) JAN FES MAR AP R MAY JUN JUL AUG SEP OCT NOV DEC ANN EYR"mean number of days 00-02 * * * * 18 91215 10 94 1

CIG 03-05 20 17 17 14 16 11 6 1. 151 17 17 20, 181 14equal to or greater 06-08 10 10 12 13 17 11 7 10 114 15 12 12143 14

than 10000 feet 09-11 12 13 18 17 20 14 8 12 119 -2- 17 75 18and 12-14 19 18 19 19 22 15 9 13 19 24 20 20 217 14

VSBY 1S-17 20 20 20 -2& 2, L 8 12 -I 2 2 IL 20 Ui 14equal to or greater 18-20 * * 219 16 2 1U_ * _U ** 131 1than 6 miles 21-23 * * * * 20 12 -l * 8 * 73 1

ALL HOURS 16 15 17 17 20 14 9 12 18 20 17 17 192

mean number of days 00-02 i 23 10 13 18 10 *1 * 114 1 1CIG 03-05 21 8 18 '13 7 WI T 1 1 20

equal to or greater 06-08 11 11 13 14 19 14 8 12 16 16 14 14 162 14than 5000 feet 09-11 13 14 19 19 22 17 IF 15 21 24 19' 1 W 70 -T

and 12-14 21 19 21 21 24 18 015 21 26 22 22 240 14VSBY 15-17 2121 22 22 25 20 14 18 22 f 22 T 54 T

equal to or greater 18-20 * 25 * 23 20 12 19 * 14 * * 143 1than 6 miles 21-23 * * 23 14 15 * * * 2 E

ALL HOURS 17 16 18 19 22 17 10 15 20 22 19 18 213 -

mean number of days 00-02 * I * * 30 127 26 31 * 125 * *1169CIG 03-05 -29 26 28 26 25 1 22 21 1 28 2 301 3- -

equal to or greater 06-08 24 2-L 27L 26. 28 25 22 25 27 28 27 27 308 14than 1000 feet 09-11 _2 4 29 27 29 _2 24 29 29 1 30 29 28 328 14

and 12-14 30 27 29 28 30 28 27 30 29 31 29 30 347 14VSBY 15-17 40 27 29- 30 29 27 30 29 31 29 30 348 14

equal to or greater 1-2 * * 1*a2 8 27 31* 29 * 31 236 1than 3 miles 21-2 * * * * 2 30 26 1 * 5 141 1

__ALL HOURS 27 25 28 27, 29 27 25 28 29 30 28 29 331

mean number of days 00-02 * * * * 1 1 0 0 * * 3 1CIG 1 1 1 1 2 2 3 2 1 1 1 1 16 14.

less than 06-08 2 3 2 2 1 2 3 2 1 1 22 14500 feet 09-11 2 2. 1 1 # 1 2 # # #i 1 10 14and/or 12-14 1 1 1 1 # # 1 1 # # , 6 14VSBY 15-17 1 11 1 #1 1 1 # # # # #1 6 14

lesthan 1-20 * * 0 * 2 10 1 0 * 1* o 31 mile 21-23 * * * * 2 1 0 0 * * 3 1

ALL HOURS 1 1 1 1 1 1 2 1 1 1 1 1 13 1

FLYING WEATHER HOURS (LST) JAN FEBIMAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN EYR

meannuberof days 00-02 * * 29 15 16 23 23 * 136 1CIG -0305 28 24 24 23 26 20 12 18 23 27 2& 2821 14

equal to or greater 0E-08 22 21 23 1 6 -824- 2 2 -25- 26 -1* than 3000 feet 09-11 23 22 25 24 26 2 32 22_and 12-14 27 24 25 24 27 2 15 9 24 9 2728 20 1

VSBY 15-17 27 24 26 251 27 231722 2 9 2 831 1equal to or greater 18-20 * * 25 * 28 22

than 3 miles 21-23 28 18 17 24 * 23ALL HOURS 25 23 25 24 27 21 15 19 24 28 26 27 285,

mean number of days 00-02 * * 0 0 0 0 * 0 * 0 1CIG 03-05 # # 1 1 1 1 1 11 1 1 # 0 8 14

less than 06-08 # # 1 1 # I 1 1 1 1 1 1 # 8 14200 feet 09-11 # # # # I # # # # #1 14and/or 12-14 # # # # # # 0 0 # . 14VSBY 15-17 # # # --L 0 --A # 1 0 0 0 # # -1!4

less than 18-20 * 0 * 0 0 0 0 * 0 * 0 0 1limile 21-23 * * * * 0 0 # 0 * * 1ALL HOURS # # # # # # # # # #• #

MISCELLANEOUS DATA

Mean number of days Clear 18 14 12 11 11 6 3 6 10 17 14 17 139 10Mean number of days Cloudy 11 12 16 16 16 21 25 21 16 1 1210 10Maximum snow depth (inches) 12 6 6 0 0 0 0 0 0 0. 1 2 12 11

AWS 6,. 62, AWSP 10-4, VOL VIIL...

F-6

' #A

SECTION G

SYNOPTIC CASE STUDIES

(None on File)

G-1

SECTION H

TERMINAL FORECAST WORK/PREPARATION SHEET

H-i

TERMINAL FORECAST WORKSHEET 'DE.T 20 30 WS ... i

[ 1. FORECASTER 2. MONTH 3. DATE/TIME

4. ANALYSISA. 500MB: PVA /NVA /NEUTRAL F. MOISTURE FOR FOG/STRATUS_ _B. 850MB: LIFTING SU-BSIDENCE G. MOISTURE AT 850MB 700MB 500MBC. 850-500MB SHOWALTER INDEX H. SURFACE WIND DIRECTION -

D. WW/MWA NUMBER /CRITERIAE. LOCAL WW/MWA NUMBER /CRITERIA_____,___,._,._.. .. _ _"

5. SYNOPTIC SITUATION

(CURRENT OBSERVATION: .... _.)_ _

6. TERMINAL FORECAST

RKXX .QNH INS

QNH INS

QNH INS

_ QNH INS.

AMD/COR/RTD (REASON: ,._.)

FTAS75 RJTZ AMD/COR/RTD

RKCX AMD/COR/RTD QNH INS

QNH INS

-- ____,__ ________ QNH INS

QNH INS

._ _,_._QNH ,INS

AMD/COR/RTD . (NOTE: The time on the last line is not used with RTD.)

7. VERIFICATION

HOUR t I f 2 3 f 4 5 f 6 .! 12 s 24TIME .___ ________ .___

CIG F/O

VIS F/C

cc

PRECIPINTER8. REMARKS

3u J