269
FNUS22 KWNS 180651
FWDDY2
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0150 AM CDT WED JUN 18 2025
VALID 191200Z - 201200Z
..CRITICAL FIRE WEATHER AREA FOR NORTHWESTERN NEVADA
..CRITICAL FIRE WEATHER AREA FOR PARTS OF EASTERN NEVADA
WESTERN
UTAH...AND FAR NORTHWESTERN ARIZONA...
..SYNOPSIS
PRECEDING A LARGE-SCALE TROUGH OVER THE WEST COAST, MODERATE-STRONG
DEEP-LAYER SOUTHWESTERLY FLOW WILL OVERSPREAD CENTRAL CA INTO THE
GREAT BASIN THROUGH THE AFTERNOON. AS THIS OCCURS, THE SURFACE
PRESSURE GRADIENT WILL TIGHTEN ACROSS MUCH OF THE WEST -- PERIPHERAL
TO SURFACE LOWS EVOLVING OVER THE NORTHERN GREAT BASIN AND THE LOWER
CO RIVER VALLEY.
..GREAT BASIN
STRONG DIURNAL HEATING AMID A DRY ANTECEDENT AIR MASS WILL RESULT IN
A DEEPLY MIXED BOUNDARY LAYER ACROSS MUCH OF THE GREAT BASIN --
CHARACTERIZED BY WIDESPREAD SURFACE TEMPERATURES IN THE 90S TO 100 F
AND SINGLE-DIGIT RH. AT THE SAME TIME, THE DEEP BOUNDARY-LAYER
MIXING INTO THE STRONG FLOW ALOFT, COUPLED WITH A TIGHTENING
PRESSURE GRADIENT, WILL YIELD AN EXPANSIVE AREA OF 25 MPH SUSTAINED
SOUTHWESTERLY SURFACE WINDS (WITH HIGHER GUSTS). OVER PORTIONS OF
NORTHWEST NV AND EASTERN NV/WESTERN UT, THESE HOT, DRY, AND WINDY
CONDITIONS OVER RECEPTIVE FUELS WILL LEAD TO CRITICAL FIRE-WEATHER
CONDITIONS.
..SAN JOAQUIN VALLEY AND ADJACENT AREAS
THE TIGHTENING PRESSURE GRADIENT AND BOUNDARY-LAYER MIXING INTO THE
ENHANCED FLOW ALOFT WILL FAVOR DRY/BREEZY CONDITIONS IN THE SAN
JOAQUIN VALLEY AND ADJACENT AREAS DURING THE AFTERNOON -- WHERE
ELEVATED FIRE-WEATHER CONDITIONS ARE EXPECTED OVER ANY DRY/RECEPTIVE
FUELS.
..WEINMAN.. 06/18/2025
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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