Fire Weather Outlook Discussion
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FNUS22 KWNS 231832

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1232 PM CST Fri Feb 23 2018

Valid 241200Z - 251200Z


A critical delineation has been introduced for this update.
Confidence is a bit higher that 20-30 mph westerly surface winds
will develop within this area amidst single-digit RH values amidst
relatively dry fuels.  Surrounding this area, an elevated fire
weather threat remains likely.  Although atmospheric conditions will
likely exceed critical thresholds in portions of west Texas, recent
rains and low ERCs preclude any upgrade in that area for this

See the previous discussion below for more information.

..Cook.. 02/23/2018

.PREV DISCUSSION... /ISSUED 0136 AM CST Fri Feb 23 2018/

An upper trough will remain over the western U.S. on Saturday. A
shortwave trough will eject east/northeast from the southern Rockies
to the upper Great Lakes. Meanwhile, another shortwave trough will
dig southeast from the Pacific Northwest to the central/southern
Rockies by the end of the period. This will maintain strong westerly
deep layer flow over the central and southern Rockies into the
adjacent Plains. At the surface, a tight surface pressure gradient
over the southern High Plains will be maintained into the afternoon
before surface high pressure over the Great Basin weakens and the
gradient slackens. This will aid in development of gusty downslope
surface winds. Elevated fire weather conditions are expected, where
fuels are dry from parts of southeast CO, eastern NM, western TX and
extreme southwest OK. Sustained westerly wind of 15-20 mph with
higher gusts are expected as RH values fall into the 12-20 percent
range. Critical fire weather conditions may occur on a brief/spotty
basis as well.

...Please see for graphic product...

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