Fire Weather Outlook Discussion
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205
FNUS22 KWNS 111844
FWDDY2

Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1243 PM CST Mon Dec 11 2017

Valid 121200Z - 131200Z

Elevated to locally critical fire weather conditions remain likely
in portions of southern California - especially in terrain-favored
areas where wind gusts will exceed 30 mph at times amidst a very dry
and warm airmass.  Additionally, portions of the northern and
central High Plains will experience locally elevated fire weather
conditions due to breezy westerly surface flow and areas of dry
fuels.  RH values in these areas should remain above critical
thresholds in most areas, however, and the spatial extent of any
elevated fire weather should be limited.

See the previous discussion below for more information.

..Cook.. 12/11/2017

.PREV DISCUSSION... /ISSUED 0136 AM CST Mon Dec 11 2017/

...Synopsis...
The persistent mid-level, west-to-east ridge-trough pattern across
the United States will be reinforced on Tuesday as a short-wave
trough crests the ridge and quickly digs toward the base of the
eastern trough during the afternoon and nighttime hours. This
pattern will maintain/reinforce the dry airmass across the central
Plains and the offshore flow across Southern California. The
aforementioned short-wave trough may aid the strengthening of the
surface-pressure gradient across Southern California late on
Tuesday, which would increase wind speeds to near or above critical
fire-weather thresholds. Will hold off on adding a critical area at
this time owing to uncertainty in just how strong the winds end up
being.

Farther east, in the Plains, despite the very dry airmass in place,
cooler temperatures and weaker winds on Tuesday will act to limit
the overall fire-weather threat. However, if temperatures end up
being warmer than forecast or winds are a bit stronger, elevated
highlights will become necessary.

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

$$



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