eastern region wcm conference call 1 warning products update: hurricane extreme wind warning...

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


Extreme Wind Warning

Extreme Wind WarningExtreme Wind Warning


Purpose

• To provide short-fused, county sized alerts prior to the onset of extreme winds associated with the inner rain-bands of major hurricanes



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 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)



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$$



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



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]



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


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



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



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...



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



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…


Solution

• Short term – Unlock Headlines to allow forecasters to correct confusing headlines– Target Winter 2007-08

• Long Term – Implement Warning Software improvements



The End

Questions or Comments?


eastern region wcm conference call 1 warning products update: hurricane extreme wind warning...

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