952
FXUS66 KHNX 131653
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
953 AM PDT MON APR 13 2026
KEY MESSAGES
1. PRECIPITATION TAPERING OFF ACROSS THE AREA TODAY, THOUGH A
CHANCE FOR THUNDERSTORMS REMAINS POSSIBLE, PARTICULARLY IN THE
SIERRA NEVADA, COASTAL RANGE, AND FOOTHILLS.
2. A GRADUAL WARMING AND DRYING TREND EXPECTED THIS WEEK.
3. ANOTHER SYSTEM BRINGS STRONGER WINDS AND A RISK FOR
THUNDERSTORMS THURSDAY.
DISCUSSION
THE UPPER LOW THAT BROUGHT ACTIVE WEATHER THIS WEEKEND IS
BEGINNING TO EXIT THE AREA, BRINGING QUIETER WEATHER WITH IT FOR
THE NEXT FEW DAYS, THOUGH A LINGERING RISK OF THUNDERSTORMS
REMAINS ACROSS THE AREA TODAY, PARTICULARLY IN THE
SIERRA NEVADA, COASTAL RANGE, AND FOOTHILLS. PROBABILITY OF
THUNDER IS 20-30% IN THE SIERRA NEVADA AND 10-15% ACROSS THE
REST OF THE AREA. CONDITIONS REMAIN WINDY ALONG THE MOJAVE
DESERT SLOPES, WITH A 30-40% CHANCE OF GUSTS EXCEEDING 55 MPH AT
WALKER PASS, INCREASING TO 60-70% NEAR JAWBONE.
LOOKING AHEAD, TUESDAY AND WEDNESDAY SHOULD BE MOSTLY QUIET AS
WE ENTER A QUASI-ZONAL PATTERN WITH MILD RIDGING, BRINGING
PLEASANT CONDITIONS, WITH HIGH TEMPERATURES IN THE LOW- TO
MID-70S ACROSS THE VALLEY. THIS MAY CAUSE A MINOR DECREASE IN
AIR QUALITY WEDNESDAY AND THURSDAY, WHICH MAY AFFECT SENSITIVE
GROUPS.
MODELS ARE IN GOOD AGREEMENT THAT A SHORTWAVE TROUGH MOVING DOWN
THE WEST COAST OF CANADA WILL BEGIN TO TURN EAST ACROSS THE US
ON THURSDAY. THERE IS NOT YET GOOD AGREEMENT ON HOW DEEP THE
TROUGH WILL BE AND HOW FAR SOUTH IT WILL DIG. REGARDLESS, THE
SYSTEM IS LIKELY TO BRING STRONG WINDS TO MOST OF THE REGION,
WITH A 5-10% CHANCE OF LIGHTNING IN THE SIERRA NEVADAS AT THE
MOMENT. THIS TROUGH WILL CLEAR THE REGION QUICKLY, ALLOWING MILD
RIDGING AND WARMING TEMPERATURES TO BUILD BACK INTO THE WEEKEND
BEFORE ANOTHER SYSTEM APPROACHES THE AREA EARLY NEXT WEEK. THIS
WILL CREATE A MINOR HEAT RISK OVER THE WEEKEND.
AVIATION
VFR CONDITIONS EXPECTED ACROSS THE AREA, WITH LOCAL MVFR AND
IFR IN AND NEAR THUNDERSTORMS. WIND GUSTS APPROACHING 40 KTS IN
THE MOJAVE DESERT SLOPES.
AIR QUALITY ISSUES
NONE.
CERTAINTY
THE LEVEL OF CERTAINTY FOR DAYS 1 AND 2 IS HIGH.
THE LEVEL OF CERTAINTY FOR DAYS 3 THROUGH 7 IS MEDIUM.
CERTAINTY LEVELS INCLUDE LOW...MEDIUM...AND HIGH. PLEASE VISIT
WWW.WEATHER.GOV/HNX/CERTAINTY.HTML FOR ADDITIONAL INFORMATION
AND/OR TO PROVIDE FEEDBACK.
HNX WATCHES/WARNINGS/ADVISORIES
NONE.
PUBLIC...AC
AVIATION....AC
WEATHER.GOV/HANFORD
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page