294
FNUS21 KWNS 091654
FWDDY1

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1153 AM CDT Wed Apr 09 2025

Valid 091700Z - 101200Z

...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE CENTRAL HIGH
PLAINS...

Short term model guidance continues to indicate high-based but
isolated thunderstorm development across portions of Nebraska
through the afternoon. The isolated convection will quickly move
southeastward at 35-45 mph, limiting rainfall while also producing
gusty surface winds associated owing to a fairly dry sub-cloud
layer. Therefore, Isolated Dry Thunderstorm highlights were
introduced into north-central into southeastern portions of
Nebraska.

Elevated highlights were expanded slightly into western Kansas
accounting for a more broad area of enhanced northwest winds within
a dry post-frontal air mass. Similarly in Florida, modest northerly
surface winds nearly parallel to the lower Florida Peninsula
combined with afternoon relative humidity dropping into the 25-35
percent range will allow for Elevated fire weather conditions this
afternoon. The driest boundary layer conditions will be concentrated
along the western Florida peninsula through this afternoon where the
Elevated highlights were added.

..Williams/Moore.. 04/09/2025

.PREV DISCUSSION... /ISSUED 1143 PM CDT Tue Apr 08 2025/

...Synopsis...
A mid-level trough will begin to amplify over the Ohio Valley as
upper ridging builds in over the Interior West today. By afternoon,
an 80+ kt 500 mb jet streak will overspread a dry boundary layer
over the central/northern Plains. Downward momentum transport within
this dry boundary layer will support 15-20 mph sustained
northwesterly surface winds amid 20 percent RH. Given dry fuels
across the central/northern Plains, Elevated highlights have been
introduced where guidance consensus depicts the aforementioned
dry/windy conditions persisting for several hours. Guidance
consensus also depicts 20-25 mph sustained northwesterly surface
winds coinciding with 10-15 percent RH across portions of the
central High Plains, where Critical highlights are in place.

Additionally, by afternoon, buoyancy (albeit scant) may support
isolated, fast-moving/high-based thunderstorms over the same
portions of the central Plains that will experience dry/windy
surface conditions atop dry fuels. However, thunderstorms should be
sparse at best over most areas, and it is unclear where a locally
higher density of lightning flashes may occur, hence no isolated dry
thunderstorms highlights introduced this outlook.

...Please see www.spc.noaa.gov/fire for graphic product...

$$