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Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
1114 AM CDT Wed Apr 20 2022

Valid 201700Z - 211200Z

...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF EXTREME SOUTHEAST
WYOMING INTO THE NEBRASKA PANHANDLE...
...CRITICAL FIRE WEATHER AREA FOR MUCH OF NEW MEXICO INTO FAR WEST
TEXAS...

12Z Soundings at locations across the Southwest into the western
Plains depict a deep, dry boundary layer in place, which will
further mix through the day given sunny skies. Surface observations
already show Elevated to locally Critical conditions underway across
eastern New Mexico into Arizona, and these conditions should beco*e
more widespread by afternoon peak heating. The eastern portions of
the Elevated delineation in the Texas Panhandle should have the
shortest-lived wildfire-spread threat given the passage of a surface
cold front (located across the northern Texas Panhandle), followed
by relatively calmer winds. 

Current RH varies from 25-60 percent across the Nebraska Panhandle.
However, guidance continues to indicate ample mixing through the
day, with 15-20 percent RH and 20+ mph sustained westerly winds
developing by afternoon. Lastly, 15 mph easterly offshore flow and
40 percent RH is present across the western Florida Peninsula. Given
sunny skies, further boundary layer mixing will cause RH to dip into
Elevated thresholds by afternoon. Considering all of the above, no
major changes were made to the previous Day 1 fire weather
highlights.

..Squitieri.. 04/20/2022

.PREV DISCUSSION... /ISSUED 0210 AM CDT Wed Apr 20 2022/

...Synopsis...
Broad/enhanced westerly flow will continue over the western
two-thirds of the CONUS, while a lee surface low develops over far
northeastern New Mexico. The strongest westerly flow will be
confined to the north-central Rockies, within the base of an
eastward-advancing midlevel trough. Farther east, expansive surface
high pressure will move slowly eastward off the Mid-Atlantic coast. 

...Southwest into the southern High Plains and Colorado Front
Range...
Another day of warm/dry boundary-layer conditions is forecast across
the Southwest into the southern High Plains and northward along the
Colorado Front Range. Diurnal heating/mixing will encourage
widespread 10-15 percent minimum RH, where breezy westerly surface
winds of 15-25 mph are expected. The strongest surface winds should
develop across much of New Mexico into far West Texas, where
Critical highlights remain in place. Along the Colorado Front Range,
locally critical conditions will be possible primarily across
terrain-favored areas, though the localized nature of these
conditions precludes Critical highlights. 

...Central High Plains...
Strong downslope warming/drying and diurnal heating will result in
15-20 percent minimum RH across parts of the central High Plains,
where breezy surface winds will develop. From eastern Wyoming into
the Nebraska Panhandle, 25-30 mph sustained west-northwesterly
surface winds (with gusts upwards of 40 mph) will overspread the
increasingly dry airmass. These meteorological conditions, coupled
with very dry fuels, will result in critical fire-weather
conditions.  

...Western Florida Peninsula...
Along the southern periphery of the expansive surface high pressure,
breezy easterly surface winds near 15 mph will overspread the
Florida Peninsula. Over the western portion of the peninsula,
diurnal heating/mixing could result in a narrow corridor of 35-40
percent RH coincident with the breezy surface winds. Elevated
highlights have been introduced to account for this localized
fire-weather threat.

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