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Page 1: 03/20/17 TURLOCK IRRIGATION DISTRICT (fwm) March 2017.pdf · Updates in Yellow Impacts •Slick roadways, potential for increased traffic accidents and longer travel times next week

03/20/17 TURLOCK IRRIGATION DISTRICT (fwm)

03/20/17,9:11 PM Page 1 of 66 INFORMATION SHEET 2017 03 20 Templete

Page 2: 03/20/17 TURLOCK IRRIGATION DISTRICT (fwm) March 2017.pdf · Updates in Yellow Impacts •Slick roadways, potential for increased traffic accidents and longer travel times next week

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Notes: Additional Information

NWS Comments: Monday, March 20, 2017 3:58 AM

...Two Significant Storms to Impact the Area This Week...

Updates in Yellow

Impacts

• Slick roadways, potential for increased traffic accidents and longer travel times next week• Mountain travel delays and possible chain controls north of Kings Canyon• Strong gusty winds on Tuesday may bring localized power outages and downed trees.• Thunderstorms may bring locally heavy rainfall, hail and frequent lightning

Forecast Confidence

• High for Today - Wednesday Weather System• Medium for thunderstorms on Tuesday; High for Wednesday thunderstorms• Medium for Friday - Saturday Weather System

Timing & Strength

• Tonight - Wednesday: Widespread precipitation with strong gusty winds. Snow levels around 8000 feet onMonday Night into Tuesday, then lowering to 5000 feet on Wednesday. Afternoon/evening thunderstormspossible on Tuesday, though more favorable on Wednesday.

• Friday - Saturday: Another storm system expected to arrive Friday with widespread significant precipitationpossible.

Weather SummaryUnsettled weather is anticipated to return to the region tonight and continue through Wednesday. There is a chanceof afternoon and evening thunderstorms on Tuesday and again on Wednesday; some could become strong,especially on Wednesday, due to colder, more unstable air. A wetter system is expected to move in on Friday andcontinue into Saturday, with thunderstorms once again possible on Saturday.

.

NWS will continue to provide updates as the situation develops.

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Index

1. Watershed Reservoir Status .................................................................................................................................................... 6

2. California Nevada River Forecast Center Reports .................................................................................................................. 7

a. CNRFC 6 Day, Rainfall Forecast ............................................................................................................................. 7

b. CNRFC 6 Day, 6 Hour Rainfall Forecast.................................................................................................................. 8

c. Don Pedro Forecasted Full Natural Flow (Not Inflow) .......................................................................................... 9

d. Dry Creek Flows (Forecasted Flows to 9th Street today) ..................................................................................... 10

3. Rainfall Forecasts.................................................................................................................................................................. 11

a. NCEP WPC Accumulated Precip. Detailed; Day 1 Total QPF ............................................................................... 11

b. Day 1 Total QPF ................................................................................................................................................... 12

c. Day 2 Total QPF ................................................................................................................................................... 13

d. 48 Hour Mean, Max and Minimum Ensemble Accumulation of Precip.............................................................. 14

e. Day 3 QPF ............................................................................................................................................................ 15

f. Days 1-3 Total QPF .............................................................................................................................................. 16

g. NCEP WPC Accumulated Precip. Detailed; Days 1-3, 72 hours Total QPF .......................................................... 17

h. Days 4 and 5 Total QPF........................................................................................................................................ 18

i. Days 6 through 7 Total QPF................................................................................................................................. 19

j. Days 1 through 7 Total QPF................................................................................................................................. 20

k. 10 Day Forecast ................................................................................................................................................... 21

l. European Center 10-day HRES (ECMWF); Days 1 through 7 Total QPF Detailed................................................ 22

m. GFS Days 1 through 16, 384 Hour Total QPF................................................................................................... 23

n. GFS Days 1 through 16, 384 Hour Total QPF....................................................................................................... 24

o. GFS vs ECMWF EPS.............................................................................................................................................. 25

p. GFS Days 1 through 16, 384 Hour Total QPF; 3rd Party Re-Processed................................................................. 26

q. GFS Days 1 through 16, 384 Hour Total QPF; 3rd Party Re-Processed................................................................. 27

r. NCEP GEFS Ensemble; 16 Day Forecast for South Lake Tahoe to Mammoth_June Lake ................................... 28

4. Temperature Forecast 10 days (Upper and Middle Watershed)............................................................................................ 29

5. Temperatures (7,178 feet) ..................................................................................................................................................... 30

6. Atmospheric River Perdiction............................................................................................................................................... 31

a. Integrated Water Vapor Transport (IVT) Forecast .............................................................................................. 31

b. Ensemble Mean of Coastal kg/m/s ..................................................................................................................... 32

c. Ensemble Probability of Coastal IVT>150 kg/m/s, .............................................................................................. 33

d. Ensemble Probability of Inland IVT>150 kg/m/s, ................................................................................................ 34

e. Ensemble Probability of Inland IVT>500 kg/m/s................................................................................................. 35

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f. (WRH ENSEMBLE GRAPHICS)Integrated Water Vapor Transport (kg m-1 s-1) ..................................................... 36

7. Other Rainfall Graphics ........................................................................................................................................................ 37

a. Plume Diagram for Modesto ............................................................................................................................... 37

b. Plume Diagram (Snow Labs)................................................................................................................................ 38

c. Ensemble Forecasts (Snow Labs)......................................................................................................................... 39

8. Satellite Imagery ................................................................................................................................................................... 40

9. Total Perceptible Water Simulation (Current Date, not one show below)............................................................................ 41

10. Actual Rainfall ...................................................................................................................................................................... 42

a. Daily Water Shed Rainfall Amounts for the Tuolumne Watershed .................................................................... 42

b. Monthly Rainfall Totals for Tuolumne Watershed.............................................................................................. 43

c. Annual Accumulation of Rainfall for Tuolumne Watershed ............................................................................... 44

11. Snow Data............................................................................................................................................................................. 45

a. Snow Course Measurements .............................................................................................................................. 45

b. Snow Course History for March 1 ....................................................................................................................... 46

c. Tuolumne Snow Sensors (There are issues with the numbers) .......................................................................... 47

d. Graph of Tuolumne Snow Sensors ...................................................................................................................... 48

e. DWR Graphs of California Snow Sensors ............................................................................................................ 49

12. Tuolumne Full Natural Flow................................................................................................................................................. 50

a. Don Pedro Release (District Preliminary Data, USGS adjustments not included)............................................... 50

b. 2016-2017 Full Natural Flow or Runoff ............................................................................................................... 51

13. 2016-2017 Difference between Full Natural Flow and Don Pedro Releases........................................................................ 52

14. CNRFC Runoff Forecasts ..................................................................................................................................................... 53

a. California Nevada River Forecast Center Seasonal (April-July) Trend Plot ......................................................... 53

b. California Nevada River Forecast Center Water Year Trend Plot........................................................................ 54

c. Water Year Accumulation Plot; CNRFC ............................................................................................................... 55

d. California Nevada River Forecast Center 10 Day Ensemble................................................................................ 56

15. DWR Monthly Runoff Forecast (March 1 Forecast) ............................................................................................................ 57

16. DWR Monthly Update .......................................................................................................................................................... 58

17. California Reservoir Report (20170319 Report)................................................................................................................... 59

18. San Joaquin Reservoir Operations (20170319 Report)......................................................................................................... 60

19. San Joaquin Storage (20170319 Report)............................................................................................................................... 61

20. Flows along the Tuolumne River.......................................................................................................................................... 62

21. Flows along the Tuolumne River.......................................................................................................................................... 63

22. Flows along the San Joaquin................................................................................................................................................. 64

23. San Joaquin River/Sacramento (Daily Flow)........................................................................................................................ 65

24. San Joaquin River Contribution (Daily Flow) ...................................................................................................................... 66

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1. Watershed Reservoir Status

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2. California Nevada River Forecast Center Reportsa. CNRFC 6 Day, Rainfall Forecast

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b. CNRFC 6 Day, 6 Hour Rainfall Forecast

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c. Don Pedro Forecasted Full Natural Flow (Not Inflow)

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d. Dry Creek Flows (Forecasted Flows to 9th Street today)

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3. Rainfall Forecastsa. NCEP WPC Accumulated Precip. Detailed; Day 1 Total QPF

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b. Day 1 Total QPF

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c. Day 2 Total QPF

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d. 48 Hour Mean, Max and Minimum Ensemble Accumulation of Precip

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e. Day 3 QPF

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f. Days 1-3 Total QPF

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g. NCEP WPC Accumulated Precip. Detailed; Days 1-3, 72 hours Total QPF

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h. Days 4 and 5 Total QPF

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i. Days 6 through 7 Total QPF

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j. Days 1 through 7 Total QPF

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k. 10 Day Forecast

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l. European Center 10-day HRES (ECMWF); Days 1 through 7 Total QPF Detailed

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m. GFS Days 1 through 16, 384 Hour Total QPF

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n. GFS Days 1 through 16, 384 Hour Total QPF

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o. GFS vs ECMWF EPS

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p. GFS Days 1 through 16, 384 Hour Total QPF; 3rd Party Re-Processed

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q. GFS Days 1 through 16, 384 Hour Total QPF; 3rd Party Re-Processed

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r. NCEP GEFS Ensemble; 16 Day Forecast for South Lake Tahoe to Mammoth_June Lake

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4. Temperature Forecast 10 days (Upper and Middle Watershed)

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5. Temperatures (7,178 feet)

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6. Atmospheric River Perdictiona. Integrated Water Vapor Transport (IVT) Forecast

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b. Ensemble Mean of Coastal kg/m/s

What does the diagram show?The magnitude of integrated vapor transport (IVT) at different latitudes along the U.S. West Coast from "today" through the next 16 days at 3-hour increments. The landfall locations are the black dots in the right-most panel. The IVT magnitude is shaded on a scale from <200 kg/m/s to >1000 kg/m/s. The right map-panel graphically depicts the total 16-day time-integrated IVT for that location in millions of kg/m.

These contain the probability of having "atmospheric river" conditions, (i.e., high water vapor content) at different latitudes along the U.S. West Coast from "today" through the next 16 days at 3-hour increments.Evidence suggest that IVT magnitudes >250 kg/m/s are typically consistent with "AR conditions", wheras IVT magnitudes >500 kg/m/s are consistent with strong ARs. The values of 150 kg/m/s should be used forinland locations. The landfall locations are the black dots in the right-most panel. The probability is shaded on a scale from 0% (blue) to 100% (purple).

The diagram also graphically depicts the number of hours a location along the coast may expect to see AR conditions at different fraction thresholds: Gray bars for number of hours with a probability >50%, blackbars for number of hours >75%, and red bards for number of hours >99%. The higher this number, the longer AR conditions are likely and the more precipitation may be expected!

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c. Ensemble Probability of Coastal IVT>150 kg/m/s,

What does the diagram show?The magnitude of integrated vapor transport (IVT) at different latitudes along the U.S. West Coast from "today" through the next 16 days at 3-hour increments. The landfall locations are the black dots in the right-most panel. The IVT magnitude is shaded on a scale from <200 kg/m/s to >1000 kg/m/s. The right map-panel graphically depicts the total 16-day time-integrated IVT for that location in millions of kg/m.

These contain the probability of having "atmospheric river" conditions, (i.e., high water vapor content) at different latitudes along the U.S. West Coast from "today" through the next 16 days at 3-hour increments.Evidence suggest that IVT magnitudes >250 kg/m/s are typically consistent with "AR conditions", wheras IVT magnitudes >500 kg/m/s are consistent with strong ARs. The values of 150 kg/m/s should be used forinland locations. The landfall locations are the black dots in the right-most panel. The probability is shaded on a scale from 0% (blue) to 100% (purple).

The diagram also graphically depicts the number of hours a location along the coast may expect to see AR conditions at different fraction thresholds: Gray bars for number of hours with a probability >50%, blackbars for number of hours >75%, and red bards for number of hours >99%. The higher this number, the longer AR conditions are likely and the more precipitation may be expected!

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d. Ensemble Probability of Inland IVT>150 kg/m/s,

What does the diagram show?The magnitude of integrated vapor transport (IVT) at different latitudes along the U.S. West Coast from "today" through the next 16 days at 3-hour increments. The landfall locations are the black dots in the right-most panel. The IVT magnitude is shaded on a scale from <200 kg/m/s to >1000 kg/m/s. The right map-panel graphically depicts the total 16-day time-integrated IVT for that location in millions of kg/m.

These contain the probability of having "atmospheric river" conditions, (i.e., high water vapor content) at different latitudes along the U.S. West Coast from "today" through the next 16 days at 3-hour increments.Evidence suggest that IVT magnitudes >250 kg/m/s are typically consistent with "AR conditions", wheras IVT magnitudes >500 kg/m/s are consistent with strong ARs. The values of 150 kg/m/s should be used forinland locations. The landfall locations are the black dots in the right-most panel. The probability is shaded on a scale from 0% (blue) to 100% (purple).

The diagram also graphically depicts the number of hours a location along the coast may expect to see AR conditions at different fraction thresholds: Gray bars for number of hours with a probability >50%, blackbars for number of hours >75%, and red bards for number of hours >99%. The higher this number, the longer AR conditions are likely and the more precipitation may be expected!

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e. Ensemble Probability of Inland IVT>500 kg/m/s

What does the diagram show?The magnitude of integrated vapor transport (IVT) at different latitudes along the U.S. West Coast from "today" through the next 16 days at 3-hour increments. The landfall locations are the black dots in the right-most panel. The IVT magnitude is shaded on a scale from <200 kg/m/s to >1000 kg/m/s. The right map-panel graphically depicts the total 16-day time-integrated IVT for that location in millions of kg/m.

These contain the probability of having "atmospheric river" conditions, (i.e., high water vapor content) at different latitudes along the U.S. West Coast from "today" through the next 16 days at 3-hour increments.Evidence suggest that IVT magnitudes >250 kg/m/s are typically consistent with "AR conditions", wheras IVT magnitudes >500 kg/m/s are consistent with strong ARs. The values of 150 kg/m/s should be used forinland locations. The landfall locations are the black dots in the right-most panel. The probability is shaded on a scale from 0% (blue) to 100% (purple).

The diagram also graphically depicts the number of hours a location along the coast may expect to see AR conditions at different fraction thresholds: Gray bars for number of hours with a probability >50%, blackbars for number of hours >75%, and red bards for number of hours >99%. The higher this number, the longer AR conditions are likely and the more precipitation may be expected!

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f. (WRH ENSEMBLE GRAPHICS)Integrated Water Vapor Transport (kg m-1 s-1)

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7. Other Rainfall Graphicsa. Plume Diagram for Modesto

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b. Plume Diagram (Snow Labs)

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c. Ensemble Forecasts (Snow Labs)

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8. Satellite Imagery

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9. Total Perceptible Water Simulation (Current Date, not one show below)

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10. Actual Rainfalla. Daily Water Shed Rainfall Amounts for the Tuolumne Watershed

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b. Monthly Rainfall Totals for Tuolumne Watershed

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c. Annual Accumulation of Rainfall for Tuolumne Watershed

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11. Snow Dataa. Snow Course Measurements

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b. Snow Course History for March 1

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c. Tuolumne Snow Sensors (There are issues with the numbers)

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d. Graph of Tuolumne Snow Sensors

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e. DWR Graphs of California Snow Sensors

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12. Tuolumne Full Natural Flowa. Don Pedro Release (District Preliminary Data, USGS adjustments not included)

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b. 2016-2017 Full Natural Flow or Runoff

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13. 2016-2017 Difference between Full Natural Flow and Don Pedro Releases

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14. CNRFC Runoff Forecastsa. California Nevada River Forecast Center Seasonal (April-July) Trend Plot

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b. California Nevada River Forecast Center Water Year Trend Plot

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c. Water Year Accumulation Plot; CNRFC

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d. California Nevada River Forecast Center 10 Day Ensemble

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15. DWR Monthly Runoff Forecast (March 1 Forecast)

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16. DWR Monthly Update

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17. California Reservoir Report (20170319 Report)

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18. San Joaquin Reservoir Operations (20170319 Report)

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19. San Joaquin Storage (20170319 Report)

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20. Flows along the Tuolumne River

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21. Flows along the Tuolumne River

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22. Flows along the San Joaquin

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23. San Joaquin River/Sacramento (Daily Flow)

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24. San Joaquin River Contribution (Daily Flow)

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