644
FNUS21 KWNS 091649
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1148 AM CDT THU OCT 09 2025
VALID 091700Z - 101200Z
..NO CRITICAL AREAS
..NEVADA
DEEP SOUTHWESTERLY FLOW AHEAD OF AN UPPER-LEVEL ENTERING THE PACIFIC
NORTHWEST WILL PERSIST OVER THE GREAT BASIN TODAY. ENHANCED
DOWNSLOPE DRYING LEEWARD OF THE SIERRA NEVADA SUPPORTING EROSION OF
A SHALLOW INVERSION UNDER AN EFFICIENT BOUNDARY LAYER MIXING
ENVIRONMENT WILL LEAD TO VERY LOW RELATIVE HUMIDITY OF AROUND 10% IN
SOME VALLEYS THIS AFTERNOON. SUSTAINED SOUTH TO SOUTHWEST WINDS OF
10-20 MPH AND LOW RELATIVE HUMIDITY WILL LEAD TO METEOROLOGICALLY
ELEVATED FIRE WEATHER CONDITIONS ACROSS PORTIONS OF SOUTHWEST AND
CENTRAL NV THIS AFTERNOON. HOWEVER, RECENT PRECIPITATION ACROSS THE
STATE AND POOR FUEL RECEPTIVENESS WILL MITIGATE A WIDESPREAD FIRE
WEATHER CONCERN FOR TODAY.
..WILLIAMS.. 10/09/2025
PREV DISCUSSION
/ISSUED 0144 AM CDT THU OCT 09 2025/
..SYNOPSIS
AN UPPER RIDGE WILL REMAIN IN PLACE ACROSS THE CENTRAL AND SOUTHERN
CONUS, WHILE AN UPPER TROUGH IMPINGES ON THE WEST COAST, AND A
PROGRESSIVE MID-LEVEL SHORTWAVE TROUGH AMPLIFIES OVER THE GREAT
LAKES TODAY. SURFACE HIGH PRESSURE WILL OVERSPREAD MUCH OF THE U.S.
EAST OF THE MISSISSIPPI RIVER, PROMOTING QUIESCENT FIRE WEATHER
CONDITIONS. SOME DRY OR BREEZY CONDITIONS MAY ACCOMPANY SOUTHERLY
FLOW AHEAD OF A SURFACE LOW OVER THE GREAT BASIN. HOWEVER, THE LACK
OF FAVORABLY OVERLAPPING DRY AND WINDY CONDITIONS, ATOP FUELS
RECEPTIVE TO FIRE SPREAD, PRECLUDE ANY FIRE WEATHER HIGHLIGHTS THIS
OUTLOOK.
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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