NOUS41 KWBC 121515
PNSWSH

Service Change Notice 12-26
National Weather Service Headquarters Washington DC
1115 AM EDT Thu Jul 12 2012

To: Subscribers:
-Family of Services
-NOAA Weather Wire Service
-Emergency Managers Weather Information Network
-NOAAPORT
Other NWS partners and NWS employees

From: Russell Schneider
Director, Storm Prediction Center

Subject: General Thunderstorm Information Added to Storm
Prediction Center (SPC) Day 3 Convective Outlook
Effective September 25, 2012

Effective Tuesday, September 25, 2012, at approximately
1500 Coordinated Universal Time (UTC), the SPC will add general thunderstorm information to all SPC Day 3 Convective Outlooks. This includes changes to:

-National Digital Forecast Database (NDFD) products
-Points (PTS) product
-Redbook Graphic product

This change is for the Continental U.S. only and will not involve changes to World Meteorological Organization Headers or Advanced Weather Interactive Processing System IDs.

After this change, the SPC Day 3 Convective Outlook will contain the same information as the SPC Day 2 Convective Outlook, including a definition of the area of general thunderstorms along with the already existing defined area of risk of severe thunderstorms: Slight, Moderate or High.

A more detailed description of the SPC Convective Outlooks can be found at:

http://www.spc.noaa.gov/misc/SPC_probotlk_info.html

For more information, please contact:

Steven Weiss
NCEP Storm Prediction Center
[email protected]

or

John Ferree
Office of Climate Water and Weather Services
[email protected]

National Service Change Notices are online at:

http://www.weather.gov/os/notif.htm

$$