872
FNUS21 KWNS 011644
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1143 AM CDT TUE SEP 01 2026
VALID 011700Z - 021200Z
..NORTHEASTERN CALIFORNIA AND NORTHERN GREAT BASIN
AN UPPER TROUGH AND ATTENDANT INCREASING MID-LEVEL SOUTHWESTERLY
FLOW WILL ENCOMPASS MUCH OF NORTHERN CALIFORNIA AND THE GREAT BASIN
TODAY. SOUTHWEST WINDS OF 10-20 MPH ALONG WITH RH OF 10-15% ARE
STILL EXPECTED ACROSS NORTHEASTERN CA INTO THE NORTHERN GREAT BASIN
THIS AFTERNOON. SOME EXPANSION OF EXISTING ELEVATED HIGHLIGHTS WERE
WARRANTED FARTHER INTO NORTHERN NV AND ADJACENT SOUTHERN ID, WITH
WIND GUSTS FROM THE SOUTH-SOUTHWEST OF AROUND 30 MPH ALREADY
OBSERVED ACROSS THE INDEPENDENCE MOUNTAINS/JARBIDGE WILDERNESS AREA
EVEN UNDER CLOUD COVER. SIMILARLY DRY, SOUTHERLY FLOW IS LIKELY IN
THE SOUTHERN GREAT BASIN BUT MARGINAL FUELS SHOULD LIMIT OVERALL
FIRE WEATHER THREAT THROUGH THE AFTERNOON.
..WILLIAMS.. 09/01/2026
PREV DISCUSSION
/ISSUED 0103 AM CDT TUE SEP 01 2026/
..SYNOPSIS
A MID-LEVEL LOW PRESSURE SYSTEM CURRENTLY OFF THE WEST CONUS COAST
WILL MOVE ONSHORE TONIGHT, BRINGING SOUTHWEST TO SOUTHERLY FLOW OVER
A GOOD PORTION OF THE WESTERN US STATES TODAY. DESPITE THE DELAYED
ONSET OF STRONGER 40-50 KT MID-LEVEL WINDS UNTIL LATE
AFTERNOON/EVENING, A SURFACE TROUGH ACROSS THE INTERIOR NORTHWEST,
COUPLED WITH MODEST SOUTHWEST 15-20 KNOT BOUNDARY LAYER FLOW, WILL
SUPPORT SOUTHWEST SURFACE WINDS OF 10-20 MPH ACROSS NORTHEASTERN CA,
FAR NORTHWESTERN NV, AND SOUTH-CENTRAL OR. THOUGH HIGH TEMPERATURES
WILL FALL SHORT OF NORMAL FOR THIS TIME OF YEAR ACROSS MUCH OF THE
FAR WESTERN CONUS, AFTERNOON RHS WILL FALL TO NEAR 10-15% ACROSS
MUCH OF THE DRAWN AREA COINCIDENT WITH THE AFOREMENTIONED WINDS,
SUPPORTING AN ELEVATED FIRE WEATHER RISK THIS AFTERNOON WHICH WILL
PERSIST INTO THE EVENING HOURS, PARTICULARLY OVER THE FAR WESTERN
GREAT BASIN.
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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