NOUS41 KWBC 191819

PNSWSH

 

Service Change Notice 13-72

National Weather Service Headquarters Washington DC

110 PM EST Tue Nov 19 2013

 

To:        Subscribers:

           -Family of Services

           -NOAA Weather Wire Service

           -Emergency Managers Weather Information Network

           -NOAAPort

           Other NWS Partners and NWS Employees

 

From:      Eli Jacks

           Chief, Fire and Public Weather Services Branch

           Mary Mullusky

           Acting Chief, Hydrologic Services Division      

 

Subject:   Tornado and Flash Flood Emergency Headlines Added

           Effective February 4, 2014

 

Effective Tuesday, February 4, 2014, at 1500 Coordinated

Universal Time (UTC), NWS Weather Forecast Offices (WFOs) will

have the option to add a headline in a Tornado Warning (TOR) that

includes the terminology "TORNADO EMERGENCY" and in a Flash Flood

Warning (FFW) that includes the terminology "FLASH FLOOD

EMERGENCY".  The headlines will only be used on rare occasions

when all of the following criteria are met:

 

  a. Severe threat to human life is imminent or ongoing

  b. Catastrophic damage is imminent or ongoing

  c. Reliable sources confirm a tornado or flash flood

 

These headlines will effectively highlight the potential for

large scale loss of life and catastrophic property damage in

these rare Tornado and Flash Flood events.

 

The headlines will be on their own line directly following the

date/time line in the WMO Header, and before the first line that

begins "THE NATIONAL WEATHER SERVICE IN XXX HAS ISSUED A", where

"XXX" is the WFO location. The headline will be preceded and

followed by a three dot ellipsis.  For example:

 

...TORNADO EMERGENCY FOR MOORE AND SOUTH OKLAHOMA CITY...

or

...FLASH FLOOD EMERGENCY FOR CENTRAL KENT COUNTY...

 

These new headlines will duplicate, not replace, the inclusion of

"TORNADO EMERGENCY" or "FLASH FLOOD EMERGENCY" in the last line

of the third bullet, i.e., the basis statement of the warning.

 

Partners and users who receive or provide services based on the

parsing of exact text strings are advised to allow for these

headlines in their software and system operations.

 

This change does not impact the Severe Weather Statement (SVS) or

Flash Flood Statement (FFS) that currently allow headlines for

Tornado and Flash Flood Emergencies.

 

A more detailed description and examples of a Tornado Warning 

and a Flash Flood Warning that include the new headline are

online at:

 

  http://www.nws.noaa.gov/om/vtec/TORFFWemerheadline.htm

 

For more information, please contact:

 

  John Ferree

  NWS Severe Storms Services

  Norman, OK  73072

  john.t.ferree@noaa.gov

  405-325-2209

 

  Edward Clark

  NWS Hydrologic Services Division

  Silver Spring, MD 20910

  edward.clark@noaa.gov

  301-713-0006 x 156

 

National Service Change Notices are online at:

 

  http://www.weather.gov/os/notif.htm

 

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