Click here for the Service Change Notice (SCN).
Effective Tuesday, November 26, 2013, at 1500 Coordinated Universal Time (UTC),
the NWS Storm Prediction Center (SPC) Day 1 and Day 2 Fire Weather Outlook Areal Outline Points Product,
Redbook Graphics, Grids and web graphics will replace the current SEE TEXT graphics designation with an area for Elevated
Risk and an area for Isolated Dry Thunderstorms.
The currently defined Dry Thunderstorm area will be relabeled as Scattered Dry Thunderstorms.
The current Critical and Extreme Fire Weather areas will remain unchanged.
The Fire Weather Outlook Text products will also not be changed.
In the two Fire Weather Outlook Areal Outline Points products (FNUS31 KWNS PFWFD1 and FNUS32 KWNS PFWFD2) the Elevated risk
areas will be labeled ELEV.
Critical risk areas will continue to be labeled CRIT, and 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 (LDIY10 KWNS, LDIY11 KWNS, LDIY20 KWNS, LDIY21 KWNS) will use a value label of 5
for the new Elevated risk areas, and continue to use 8 for the Critical Areas and 10 for the Extreme Areas.
The Dry Thunderstorm Grids will use a value label of 5 for the new Isolated,
and continue to use 8 for Scattered Dry Thunderstorms.
SPC will begin issuing preview web graphics beginning September 24, 2013, in advance of them becoming operational:
Day 1 Fire Weather Outlook: http://www.spc.noaa.gov/products/fire_wx/fwdy1.html
Day 2 Fire Weather Outlook: http://www.spc.noaa.gov/products/fire_wx/fwdy2.html
To facilitate the transition, an example web graphic and areal points product are shown below:
|Below: New Day 1, 2 Fire Weather Outlook with enhancement example (New Areal Outline Product Example FNUS31 KWNS PFWFD1)|
|Below: Legacy Day 1, 2 Fire Weather Outlook (Legacy Areal Outline Product FNUS31 KWNS PFWFD1)|