Fire Weather Outlook Discussion
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FNUS21 KWNS 270732

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0132 AM CST Mon Feb 27 2017

Valid 271200Z - 281200Z


A mid/upper-level trough will remain positioned across the
Inter-Mountain West today, while fairly fast, quasi-zonal flow
persists across much of the eastern US. Within the western trough,
an impulse and related speed maximum will progress from the Sierra
Nevada eastward to the central high Plains. As a result, surface lee
cyclogenesis will take place over eastern Colorado, tightening the
pressure gradient across much of the southern and central Plains.

...Portions of the southern/central high Plains...
Ample west/southwesterly mid-level flow will exist over the region
today, such that downslope flow encourages considerable low-level
warming/drying to support a critical fire-weather threat from far
west Texas northward to southeast Colorado. A tightening surface
pressure gradient, in combination with strengthening flow aloft,
will support sustained southwesterly winds around 20-30 mph (with
gusts up to 40 mph) in the critical area. Meanwhile, despite the
potential for high clouds over parts of the region, RH values should
fall to around 12-15 percent. In tandem with dry fuels, these
meteorological conditions will favor rapid fire spread.

Surrounding the critical area, winds around 15-20 mph sustained will
combine with RH values around 15-25 percent to encourage elevated
fire-weather concerns from east-central Colorado to the Texas
Rolling Plains.

..Picca.. 02/27/2017

...Please see for graphic product...

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