mark tew marine and coastal weather services branch
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Warning Products Update: Hurricane Extreme Wind Warning Proposed Headline Changes in NWS Warning Products. Partners Meeting January 18, 2007. Mark Tew Marine and Coastal Weather Services Branch Office of Climate, Water and Weather Services. Warning Products Update. Extreme Wind Warning. - PowerPoint PPT PresentationTRANSCRIPT
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Eastern Region WCM Conference Call 1
Warning Products Update: Hurricane Extreme Wind Warning
Proposed Headline Changes in NWS Warning Products
Mark Tew
Marine and Coastal Weather Services Branch
Office of Climate, Water and Weather Services
Partners Meeting January 18, 2007
Warning Products UpdateWarning Products Update
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Eastern Region WCM Conference Call 2
Extreme Wind Warning
Extreme Wind WarningExtreme Wind Warning
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Eastern Region WCM Conference Call 3
Purpose
• To provide short-fused, county sized alerts prior to the onset of extreme winds associated with the inner rain-bands of major hurricanes
Extreme Wind WarningExtreme Wind Warning
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Eastern Region WCM Conference Call 4
Criteria
• Imminent onset of, or occurring tropical cyclone related sustained surface winds, greater than or equal to 100 knots (115 mph)
• Extreme tropical cyclone winds expected to occur within a WFOs CWA within an hour
Extreme Wind WarningExtreme Wind Warning
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Eastern Region WCM Conference Call 5
Extreme Wind Warnings Will:• Be issued for the
smallest geographic area possible, encompassing the extreme wind conditions
• Use valid times of two hours or less
• Issued only one time for a given location
• Updates will be provided within Severe Weather Statements (SVS)
Extreme Wind WarningExtreme Wind Warning
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Eastern Region WCM Conference Call 6
EWW ExampleEWWTBWFLC015-071-132100-/O.NEW.KTBW.EW.W.0013.040813T1938Z-040813T2100Z/BULLETIN - EAS ACTIVATION REQUESTEDEXTREME WIND WARNINGNATIONAL WEATHER SERVICE TAMPA BAY - RUSKIN FL338 PM EDT FRI AUG 13 2004
THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED AN
* EXTREME WIND WARNING FOR THE ONSET OF SUSTAINED WINDS OF 115 MPH OR GREATER FOR... CHARLOTTE COUNTY IN SOUTHWEST FLORIDA * UNTIL 500 PM EDT
* AT 335 PM EDT...SURFACE OBSERVATIONS AND NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED EXTREME WINDS...ASSOCIATED WITH THE EYEWALL OF HURRICANE CHARLEY...WERE MOVING ONSHORE NEAR NORTH CAPTIVA ISLAND. SUSTAINED WINDS IN EXCESS OF 140 MPH...CAPABLE OF PRODUCING WIDESPREAD DESTRUCTION...CAN BE EXPECTED AS THE EYEWALL PASSES OVERHEAD. MOVEMENT WAS NORTH NORTHEAST AT 20 MPH.
* THESE EXTREME WINDS WILL AFFECT... CHARLOTTE COUNTY IN SOUTHWEST FLORIDA THIS IS A DANGEROUS STORM! MOVE INTO AN INTERIOR ROOM AWAY FROM WINDOWS AND OUTER WALLS. COVER YOUR HEAD AND BODY WITH PILLOWS OR BLANKETS.
LAT...LON 2672 8226 2644 8213 2702 8174 2702 8207$$
Extreme Wind WarningExtreme Wind Warning
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Eastern Region WCM Conference Call 7
Implementation Timeline
• Public Notification (PNS) – Feb 2007
• AWIPS OB7.2 – Spring 2007
• National Implementation – June 2007
• New EAS EWW Code – Longer Term
– Working with FCC to gain approval
Extreme Wind WarningExtreme Wind Warning
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Eastern Region WCM Conference Call 8
Partner Feedback• Consideration being given to change
the issuance criteria from sustained winds of 115 mph or greater to frequent gusts of 115 mph or greater
• Comments or questions to: [email protected]
Extreme Wind WarningExtreme Wind Warning
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Eastern Region WCM Conference Call 9
Proposed Headline Changes in NWS Warning Products
Mark Tew
Marine and Coastal Weather Services Branch
Office of Climate, Water and Weather Services
Partners Meeting January 18, 2007
New NWS Headline RequirementsNew NWS Headline Requirements
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Eastern Region WCM Conference Call 10
Pre-VTEC: Purpose of Long Duration Headlines
• Lists current watch/warning/advisory product – Product name not identified in AWIPS ID (WSW = 19
products)– Short duration products have own unique AWIPS ID
• SVR, TOR, FFW, SMW
• Provides valid time information– Product expiration time usually differs from event
expiration time– Short duration products – these times match
New NWS Headline RequirementsNew NWS Headline Requirements
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Eastern Region WCM Conference Call 11
Headline Timeline• Proposed Standardized Format for NWS
Segment Headlines– Provided by First Alert (Marvin McInnis - Jan,
2004), endorsed by Meteorologix and WSI • Implemented Headline Standardization
Winter 2004-05– Served as a backup until VTEC
implementation• Implemented VTEC – Nov 2005
New NWS Headline RequirementsNew NWS Headline Requirements
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Eastern Region WCM Conference Call 12
Confusing Headlines:Downgrades & Replacements
• High Wind Warning downgraded to a Wind Advisory:...HIGH WIND WARNING CANCELLED FOR THE NORTH
OREGEON CASCADES... ...WIND ADVISORY IN EFFECT FROM 11 PM LATE
TONIGHT UNTIL 4 PM WEDNESDAY AFTERNOON FOR THE NORTH OREGON CASCADES...
• Blizzard Warning replacing a Winter Storm Warning:...WINTER STORM WARNING CANCELLED… ...BLIZZARD WARNING IN EFFECT UNTIL UNTIL 4 PM
MST WEDNESDAY AFTERNOON...
New NWS Headline RequirementsNew NWS Headline Requirements
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Eastern Region WCM Conference Call 13
Post VTEC: Headline Flexibility• VTEC Coding and Headlines meet Separate
Needs– VTEC Coding used for computer reliant users– Headlines for users making life and property
protection decisions • Provide Option to Unlock Headlines
– Provide forecaster greater latitude to fix misleading headlines
• Simplify headlines– Eliminate action phrases and time zones – Replace specific time phrases with general time
phrases
New NWS Headline RequirementsNew NWS Headline Requirements
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Eastern Region WCM Conference Call 14
Simplified Headlines• Downgrades (Two headlines combined into
one): …HIGH WIND WARNING REPLACED BY
WIND ADVISORY…THROUGH WEDNESDAY AFTERNOON FOR THE NORTH OREGON CASCADES…
• Replacements: …WINTER STORM WARNING REPLACED BY
BLIZZARD WARNING…THROUGH WEDNESDAY AFTERNOON…
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Eastern Region WCM Conference Call 15
Solution
• Short term – Unlock Headlines to allow forecasters to correct confusing headlines– Target Winter 2007-08
• Long Term – Implement Warning Software improvements
New NWS Headline RequirementsNew NWS Headline Requirements
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Eastern Region WCM Conference Call 16
The End
Questions or Comments?
New NWS Headline RequirementsNew NWS Headline Requirements