905
FNUS21 KWNS 051643
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1042 AM CST WED NOV 05 2025
VALID 051700Z - 061200Z
..SOUTHERN SIERRA NEVADA AND OWENS VALLEY
AN UPPER-LEVEL TROUGH AND ASSOCIATED 70-80 KNOT MID-LEVEL JET OVER
NORTHERN CA/NORTHWESTERN NV WILL BRING GUSTY PRE-FRONTAL WINDS FROM
THE SOUTH AND SOUTHWEST TO PORTIONS OF THE SIERRA NEVADA TODAY.
STRONG DOWNSLOPING IN THE LEE OF THE SOUTHERN SIERRA NEVADA IS
CURRENTLY SUPPORTING SINGLE DIGIT RELATIVE HUMIDITY VALUES IN THE
OWENS VALLEY VICINITY. SOUTH-SOUTHWEST WINDS OF 30-40 MPH WITH GUSTS
TO 60 MPH ARE POSSIBLE IN WIND PRONE AREAS. THESE STRONG WINDS
COMBINED WITH 10-15% (BELOW 10% LOCALLY) WILL PROMOTE A BRIEF
ELEVATED FIRE WEATHER THREAT TO THE AREA, ALTHOUGH GENERALLY COOLER
TEMPERATURES AND MARGINALLY DRY FUELS SHOULD LIMIT A MORE
SIGNIFICANT WILDFIRE POTENTIAL.
..PIEDMONT/MID-ATLANTIC
A STRENGTHENING SURFACE LOW ACROSS SOUTHWEST ONTARIO AND APPROACHING
COLD FRONT WILL PROMOTE INCREASING PRE-FRONTAL WINDS ACROSS PORTIONS
OF THE MID-ATLANTIC TODAY. SOUTHWEST WINDS OF AROUND 15 MPH NEAR AND
EAST OF THE BLUE RIDGE ALONG WITH RELATIVE HUMIDITY FALLING TO
20-25% IN LOCALIZED AREAS WILL RESULT IN A PERIOD OF ELEVATED FIRE
WEATHER CONDITIONS AMID DRY FUELS. SIMILARLY DRY AND BREEZY
CONDITIONS ACROSS EASTERN PA AND NY CATSKILLS ARE EXPECTED TODAY BUT
RECENT RAINFALL AND LESS RECEPTIVE FUELS SHOULD MITIGATE A BROADER
FIRE WEATHER CONCERN. THE PREVIOUS FORECAST REMAINS ON TRACK WITH NO
CHANGES TO EXISTING ELEVATED HIGHLIGHTS.
..WILLIAMS.. 11/05/2025
PREV DISCUSSION
/ISSUED 1136 PM CST TUE NOV 04 2025/
..SYNOPSIS
THE UPPER TROUGH IN THE GREAT LAKES WILL INTENSIFY AS IT MOVES
EASTWARD INTO THE NORTHEAST TODAY. A SURFACE LOW WILL SIMULTANEOUSLY
DEEPEN AS IT FOLLOWS A SIMILAR TRACK TO ITS PARENT UPPER TROUGH. A
COLD FRONT WILL MAKE FAIRLY RAPID PROGRESS THROUGH THE OHIO VALLEY
AND MID-ATLANTIC.
..PIEDMONT/MID-ATLANTIC
THE DEEPENING SURFACE LOW MOVING INTO THE NORTHEAST WILL INCREASE
THE SURFACE PRESSURE GRADIENT INTO THE MID-ATLANTIC. AHEAD OF THE
COLD FRONT, WINDS OF AROUND 15 MPH ARE POSSIBLE NEAR AND EAST OF THE
BLUE RIDGE. THERE STILL REMAINS SOME SPREAD IN GUIDANCE AS TO HOW
LOW RH WILL FALL GIVEN AT LEAST SOME IMPACT FROM UPPER-LEVEL CLOUDS.
HOWEVER, DOWNSLOPE WARMING SHOULD BE SUFFICIENT TO REDUCE RH TO
25-35%. ELEVATED FIRE WEATHER IS POSSIBLE WITHIN AREAS OF MODESTLY
DRY FUELS.
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page