NOUS41 KWBC 121329

PNSWSH

 

Service Change Notice 13-60

National Weather Service Headquarters Washington DC

930 AM EDT Thu Sep 19 2013

 

To:        Subscribers:

           -Family of Services

           -NOAA Weather Wire Service

           -Emergency Managers Weather Information Network

           -NOAAPort

           Other NWS Partners and Employees

 

From:      Eli Jacks

           Chief, Fire and Public Weather Services Branch

 

Subject:   Change in NWS Storm Prediction Center (SPC) "SEE TEXT"

           Information in Day 1 and Day 2 Fire Weather Outlook

           Products for CONUS only, Effective November 26, 2013

 

Effective Tuesday, November 26, 2013, at 1500 Coordinated

Universal Time (UTC), the SPC will replace the currently

displayed "SEE TEXT" reference in its Day 1 and Day 2 Fire

weather Outlook products with graphical depictions of areas of

Elevated Risk and areas of Isolated Dry Thunderstorms. In

addition, currently defined Dry Thunderstorm areas will be

relabeled as Scattered Dry Thunderstorms. No changes will be made

to the current Critical and Extreme Fire Weather areas.

 

Table 1 - Affected NCEP SPC Products

 

Product                                 WMO Header       AWIPS ID

-------                                 ----------       --------

 

Day 1 Fire Weather Outlook              FNUS31 KWNS      PFWFD1

 Areal Outline Points

 

Day 2 Fire Weather Outlook              FNUS32 KWNS      PFWFD2

 Areal Outline Points

 

Day 1 Redbook Graphics                  PMWE98 KWNS      RBGFW1

 

Day 2 Redbook Graphics                  PMWI98 KWNS      RBGFW2

 

Critical Fire Weather Grids             LDIY10 KWNS      N/A

 Day 1                                  LDIY11 KWNS      N/A

 

Critical Fire Weather Grids             LDIY20 KWNS      N/A

 Day 2                                  LDIY21 KWNS      N/A

 

No changes will be made to the Fire Weather Outlook text products

(FNUS21 KWNS/FWDDY1 AND FNUS22 KWNS/FWDDY2).

 

In the Fire Weather Outlook Areal Outline Points products, SPC

will label the new Elevated Risk areas ELEV, while the Critical

Risk areas will continue to be labeled CRIT and the Extreme Risk

areas labeled EXTM. The new Isolated Dry Thunderstorm areas will

be labeled IDRT and Scattered Dry Thunderstorm areas will be

labeled SDRT.

 

The Critical Fire Weather Grids will use a label value of 5 for

the new Elevated Risk areas and continue to use label values of 

8 for Critical areas and 10 for Extreme areas. The Dry

Thunderstorm Grids will use a label value of 5 for the new

Isolated Dry Thunderstorms and continue to use a label value of 

8 for Scattered Dry Thunderstorms.

 

Examples of the new SPC Day 1 and Day 2 Fire Weather Outlook

Areal Outline Points products and graphics are online at:

 

http://www.spc.noaa.gov/exper/FWSCNExample/

 

NCEP SPC will begin issuing "preview" web graphics beginning

September 24, 2013, in advance of them becoming operational:

 

http://www.spc.noaa.gov/products/fire_wx/fwd1.html

 

and

 

http://www.spc.noaa.gov/products/fire_wx/fwd2.html

 

For more information, please contact:

 

   John Ferree

   NWS Severe Storms Services

   Norman, OK  73072

   john.t.ferree@noaa.gov

   405-325-2209

 

National Service Change Notices are online at:

 

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

 

$$