168
FNUS22 KWNS 101930
FWDDY2
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0229 PM CDT SAT OCT 10 2026
VALID 111200Z - 121200Z
..NORTHERN SACRAMENTO VALLEY
A DEEPENING UPPER-LEVEL TROUGH WILL SETTLE OVER THE NORTHWESTERN
CONUS THROUGH D2/SUNDAY AS A SURFACE COLD FRONT PUSHES INTO NORTHERN
CA AND THE GREAT BASIN. NORTHERLY, POST-FRONTAL FLOW WILL FUNNEL
INTO THE NORTHERN SACRAMENTO VALLEY AND ACCELERATE SUNDAY MORNING
THROUGH EARLY SUNDAY AFTERNOON. WIND SPEEDS OF 15-20 MPH (25 MPH
LOCALLY) WITH HIGHER GUSTS COMBINED WITH AFTERNOON RH NEARING 15%
ARE EXPECTED ACROSS THE NORTHERN SACRAMENTO VALLEY AND BORDERING
FOOTHILLS OVERLAPPING DRY FUELS. ONLY SLIGHT ADJUSTMENTS TO THE
EXISTING ELEVATED HIGHLIGHTS WERE NEEDED BASED ON LATEST
MODEL/ENSEMBLE GUIDANCE AND TRENDS.
..WILLIAMS.. 10/10/2026
PREV DISCUSSION
/ISSUED 0101 AM CDT SAT OCT 10 2026/
..SYNOPSIS
AN UPPER-LEVEL TROUGH WILL REMAIN IN PLACE ACROSS MUCH OF THE
WESTERN U.S. ON D2/SUNDAY, AIDING IN THE NORTHWARD TRANSPORT OF
DEEPER TROPICAL MOISTURE INTO SOUTHERN CALIFORNIA AND MUCH OF THE
INTERMOUNTAIN WEST. AT THE SURFACE, A FRONTAL SYSTEM WILL EXTEND
FROM SOUTHERN CALIFORNIA NORTHEASTWARD INTO THE GREAT BASIN AND THEN
EASTWARD INTO THE CENTRAL PLAINS. IN THE WAKE OF THIS FRONT, MAINLY
DRY CONDITIONS WILL CONTINUE ACROSS THE COLUMBIA BASIN AND NORTHERN
CALIFORNIA, WITH DRY AND BREEZY NORTHERLY FLOW EXPECTED TO BRING AN
ELEVATED FIRE WEATHER THREAT TO THE NORTHERN SACRAMENTO VALLEY
SUNDAY AFTERNOON.
..NORTHERN SACRAMENTO VALLEY
FOLLOWING SATURDAY'S COLD FRONTAL PASSAGE, STRENGTHENING NORTHERLY
WINDS AND DRY CONDITIONS ARE EXPECTED TO SUPPORT AN INCREASING FIRE
WEATHER THREAT FOR PORTIONS OF THE NORTHERN SACRAMENTO VALLEY AND
ADJACENT FOOTHILLS. SUSTAINED NORTHERLY WINDS OF 15-25 MPH (WITH
LOCALLY HIGHER GUSTS) ARE FORECAST TO OVERLAP MINIMUM RH VALUES
AROUND 20% SUNDAY AFTERNOON, WITH THE GUSTY WINDS THE PRIMARY DRIVER
OF FIRE WEATHER CONCERNS WHERE FUELS ARE RECEPTIVE.
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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