NOUS41 KWBC 011815



Service Change Notice 12-39

National Weather Service Headquarters Washington DC

215 PM EDT Thu Nov 1 2012


To:        Subscribers:

           -Family of Services

           -NOAA Weather Wire Service

           -Emergency Managers Weather Information Network


           Other NWS partners and NWS employees


From:      Eli Jacks

           Chief, Fire and Public Weather Services Branch


Subject:   Discontinuance of Experimental Extreme Cold Warnings

           Effective December 3, 2012


Effective Monday, December 3, 2012, at 1200 Coordinated Universal Time (UTC), experimental Extreme Cold Warnings (ECWs) will be discontinued by the NWS Weather Forecast Offices (WFOs) that were issuing them using the Non-Precipitation Weather Product
(Table 1).  Only the experimental ECW product will be discontinued. These WFOs will continue to issue all other
NPW products.


Table 1


WFO                         WMO HEADING     AWIPS ID

Rapid City, SD              WWUS73 KUNR     NPWUNR

Aberdeen, SD                WWUS73 KABR     NPWABR

Sioux Falls, SD             WWUS73 KFSD     NPWFSD

Bismarck, ND                WWUS73 KBIS     NPWBIS

Eastern ND/Grand Forks, ND  WWUS73 KFGF     NPWFGF

Minneapolis, MN             WWUS73 KMPX     NPWMPX

Duluth, MN                  WWUS73 KDLH     NPWDLH

Little Rock, AR             WWUS73 KLZK     NPWLZK.


Since January 18, 2011, the NWS has been evaluating the usefulness of the ECW product:


Due to a lack of events over the past two cold weather seasons and because other projects are taking shape which will incorporate the issues this experiment was to address, it was decided to end the experiment.


Partners and users of the discontinued experimental ECW listed in Table 1 can receive Wind Chill Watches, Warnings and Advisories via the Winter Storm Warning (WSW) product using NWS Valid-Time Event Codes (VTEC) WC.A, WC.W and WC.Y, respectively.


For more information, please contact:


   Jim Keeney

   7220 NW 101St Terrace Building

   Routing Code: W/CR1

   Kansas City, MO 64153-2371

   Phone: 816-268-3141


National Service Change Notices are online at: