481
FNUS22 KWNS 180659
FWDDY2
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0158 AM CDT THU JUN 18 2026
VALID 191200Z - 201200Z
..SYNOPSIS
A MIDLEVEL TROUGH WILL CONTINUE EASTWARD ACROSS PARTS OF NORTHERN CA
INTO THE GREAT BASIN -- RESULTING IN THE BREAKDOWN OF AN UPPER RIDGE
OVER THE REGION.
..DRY THUNDERSTORMS
LARGE-SCALE FORCING FOR ASCENT ACCOMPANYING THE MIDLEVEL TROUGH AND
AMPLE MIDLEVEL MOISTURE ACROSS NORTHERN CA INTO THE NORTHERN GREAT
BASIN AND INTERMOUNTAIN WEST WILL SUPPORT THE DEVELOPMENT OF WIDELY
SCATTERED HIGH-BASED THUNDERSTORMS BEGINNING AS EARLY AS FRIDAY
MORNING AND PERSISTING INTO THE EVENING HOURS. WHILE AROUND 0.75
INCH PW WILL PROMOTE A MIX OF WET-DRY THUNDERSTORMS, QUICK STORM
MOTIONS AND A WELL-MIXED BOUNDARY LAYER SHOULD STILL TEND TO LIMIT
RAINFALL ACCUMULATIONS WITH MUCH OF THIS ACTIVITY. GIVEN PRECEDING
DAYS OF WARM/DRY CONDITIONS AND INCREASINGLY RECEPTIVE FUELS,
LIGHTNING-INDUCED IGNITIONS AND LOCALLY STRONG/ERRATIC OUTFLOW WINDS
ARE A CONCERN.
..GREAT BASIN INTO THE SOUTHWEST AND CENTRAL ROCKIES
ENHANCED DEEP-LAYER SOUTHWESTERLY FLOW PRECEDING THE MIDLEVEL TROUGH
WILL OVERSPREAD A DEEPLY MIXED BOUNDARY LAYER ACROSS THE REGION
DURING THE AFTERNOON. THE COMBINATION OF 10-15 PERCENT RH AND 15-20
MPH SUSTAINED SOUTH-SOUTHWESTERLY SURFACE WINDS ATOP DRY FUELS WILL
FAVOR ELEVATED TO LOCALLY CRITICAL FIRE-WEATHER CONDITIONS.
..WEINMAN.. 06/18/2026
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page