Fire Weather Outlook Discussion
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FNUS21 KWNS 241551

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1051 AM CDT Sun Sep 24 2017

Valid 241700Z - 251200Z

The previous forecast remains on track and no changes are needed.
See discussion below for details.

..Leitman.. 09/24/2017

.PREV DISCUSSION... /ISSUED 0132 AM CDT Sun Sep 24 2017/

The upper trough/low centered over the Great Basin early this
morning will make only very slow eastward progress across the
western CONUS as an upper ridge remains over the OH Valley and
Northeast. Enhanced mid-level winds on the western half of the upper
trough are forecast to slowly decrease through the period.
Subsidence on the back side of the upper trough will promote
strengthening surface high pressure across the Great Basin by early
Monday morning.

...Portions of the Sacramento Valley and Adjacent Coastal Ranges of
Northern CA...
Sustained northerly winds up to 15 mph will likely occur again this
afternoon across portions of the Sacramento Valley and adjacent
Coastal Ranges of northern CA. RH values will become lowered into
the 10-20% range, and with dry/receptive fuels expected to remain in
place, an elevated area has been maintained across this region with
only minor changes.

...Portions of Southern CA...
A slowly strengthening surface pressure gradient across parts of
southern CA may result in weak to locally moderate offshore
northerly/northeasterly winds late tonight into early Monday
morning. Latest high-resolution guidance indicates sustained winds
of 15-20 mph will likely occur in combination with poor overnight RH
recovery and drying fuels to support elevated fire weather
conditions across a small part of mainly coastal southern CA.

...Please see for graphic product...

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