041
FXUS66 KHNX 091200
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
500 AM PDT TUE JUN 9 2026
UPDATE
UPDATED AVIATION SECTION.
KEY MESSAGES
1. ELEVATED WINDS GUSTS EXPECTED FOR THE SAN JOAQUIN VALLEY
ALONG WITH STRONG WINDS FOR THE MOJAVE DESERT SLOPES THROUGH
EARLY TUESDAY MORNING.
2. MINOR HEAT RISK ACROSS THE LOWER ELEVATIONS OF CENTRAL
CALIFORNIA THROUGH TUESDAY WITH A WARMING TREND AND INCREASING
RISK STARTING WEDNESDAY.
3. WIDESPREAD MODERATE HEAT RISK, INCLUDING TRIPLE-DIGIT HEAT,
IN THE LOWER ELEVATIONS THURSDAY UNTIL NEXT WEEKEND.
4. PRACTICE SAFETY AROUND LAKES, RIVERS, AND STREAMS, AS WATER
IS STILL RUNNING COLD.
DISCUSSION
A LOW PRESSURE TROUGH IS CURRENTLY TRACKING THROUGH CENTRAL
CALIFORNIA, CREATING GUSTY CONDITIONS ACROSS THE LOWER
ELEVATIONS OF THE CENTRAL VALLEY AND IN THE LEE SIDE OF THE
TEHACHAPI MOUNTAIN RANGE. THERE IS A 70 TO 80 PERCENT CHANCE FOR
WIND GUSTS TO EXCEED 30 MPH ACROSS THE SAN JOAQUIN VALLEY THIS
EVENING, AND AS SUCH, A WIND ADVISORY HAS BEEN ISSUED THAT IS
VALID THROUGH 2 AM PDT. OVER THE SAME TIME FRAME, THERE IS AN 80
TO 90 PERCENT CHANCE FOR WIND GUSTS TO EXCEED 50 MPH IN THE
MOJAVE SLOPES, LEADING TO A WIND ADVISORY FOR THIS AREA THROUGH
5 AM PDT. SUSTAINED WINDS 10 TO 15 MPH REMAIN EXPECTED
THROUGHOUT TUESDAY ACROSS THE SAN JOAQUIN VALLEY DUE TO THE
AFOREMENTIONED TROUGH BEING CENTERED OVER THE GREAT BASIN
REGION. NORTHWEST FLOW ON THE UPSTREAM PORTION OF THE TROUGH
WILL CONTINUE TO BRING THESE STRONGER WIND GUSTS, BUT AN INFLUX
OF MOISTURE ON TUESDAY WILL RAISE RELATIVE HUMIDITY VALUES
ACROSS THE AREA, REDUCING FIRE CONCERNS; LITTLE PRECIPITATION IS
ANTICIPATED WITH THIS INFLUX, WITH ANY AMOUNTS CONTAINED MAINLY
TO THE HIGHER ELEVATIONS OF THE CENTRAL SIERRA.
AS THE TROUGH TRACKS EASTWARD ON WEDNESDAY, A WARMING AND DRYING
TREND WILL SET UP OVER CALIFORNIA. THERE IS A 70 TO 80 PERCENT
PROBABILITY FOR AFTERNOON HIGHS TO EXCEED 100 DEGREES ACROSS THE
SAN JOAQUIN VALLEY ON THURSDAY, WITH AN 80 TO 90 PERCENT
PROBABILITY FOR FRIDAY AND 70 TO 80 PERCENT AGAIN ON SATURDAY.
THESE WARMER TEMPERATURES WILL DRIVE DOWN RELATIVE HUMIDITIES
ACROSS THE REGION, WITH MINRH VALUES BROADLY LESS THAN 20
PERCENT IN THE CENTRAL VALLEY AND LOWER ELEVATIONS OF THE SIERRA
FOOTHILLS THURSDAY THROUGH MONDAY; MINRH VALUES ARE EXPECTED AT
10 PERCENT OR LESS ACROSS THE MOJAVE DESERT. THESE CONDITIONS
EXPECT TO RAISE FIRE CONCERNS AGAIN, ESPECIALLY FOR GRASS FIRES
IN THESE LOWER ELEVATIONS.
AVIATION
VFR CONDITIONS EXPECTED ACROSS THE CENTRAL CALIFORNIA INTERIOR
FOR THE NEXT 24 HOURS.
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...MCCOY
AVIATION....EW
WEATHER.GOV/HANFORD
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