207
FNUS22 KWNS 151925
FWDDY2
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0225 PM CDT TUE SEP 15 2026
VALID 161200Z - 171200Z
..CENTRAL NEVADA
A MID-LEVEL LOW SLIDING SOUTHWARD FROM THE PACIFIC NORTHWEST WILL
MOVE OVER NORTHERN CA THROUGH D2/WEDNESDAY. INCREASING DEEP LAYER
SOUTHWEST FLOW SOUTHEAST OF THE LOW SHOULD CONTRIBUTE A FIRE WEATHER
THREAT TO PORTIONS OF NV. SOUTH-SOUTHWEST WINDS OF 15-20 MPH COUPLED
WITH MINIMUM DAYTIME RH OF 15% OR LESS WILL SUPPORT ELEVATED FIRE
WEATHER CONDITIONS OVER DRYING FUELS WHERE ERC VALUES ARE NEARING
THE 80TH PERCENTILE. LATEST SHORT TERM MODEL GUIDANCE SUGGESTS A
MORE PRONOUNCED WESTWARD PUSH OF DEEPER MOISTURE ACROSS AZ, SOUTHERN
NV AND FAR SOUTHWEST UT INTO EASTERN NV THROUGH TOMORROW, RESULTING
IN HIGHER RH DURING THE AFTERNOON. ISOLATED CONVECTION AND
ACCOMPANYING CLOUD COVER WILL ALSO MITIGATE THE FIRE WEATHER THREAT
ACROSS FAR EASTERN NV WHERE MARGINAL FUELS REMAIN. THUS, RETRACTED
ELEVATED HIGHLIGHTS SLIGHTLY WESTWARD TO EXCLUDE FAR EASTERN NV.
..WILLIAMS.. 09/15/2026
PREV DISCUSSION
/ISSUED 0100 AM CDT TUE SEP 15 2026/
..SYNOPSIS
UPPER TROUGHING WILL TRANSITION INTO A CLOSED LOW OVER NORTHERN
CALIFORNIA AND SOUTHERN OREGON ON DAY 2/WEDNESDAY, MAINTAINING
STRONG SOUTHWESTERLY FLOW ACROSS THE GREAT BASIN. HOT AND DRY
CONDITIONS WILL CONTINUE ACROSS TEXAS AND OKLAHOMA AS HIGH PRESSURE
EXPANDS INTO THE CENTRAL U.S., THOUGH MUCH LIGHTER WINDS WILL LIMIT
BROADER FIRE WEATHER CONCERNS.
..CENTRAL-EASTERN NEVADA
DEEP-LAYER SOUTHWEST FLOW COUPLED WITH A DRY AIRMASS AND EFFICIENT
DAYTIME MIXING WILL PROMOTE AN ELEVATED FIRE WEATHER THREAT FOR
PORTIONS OF CENTRAL-EASTERN NEVADA ON DAY 2/WEDNESDAY. AT PEAK
HEATING, SUSTAINED SOUTHWESTERLY WINDS OF 15-20 MPH AND RH VALUES OF
15% OR LESS WILL OVERLAP DRYING FUELS. RH MAY DECLINE TO LESS THAN
10% IN SOME VALLEYS, BUT MARGINAL FUEL RECEPTIVENESS WILL MUTE A
MORE SIGNIFICANT FIRE WEATHER CONCERN ACROSS THE AREA.
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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