135
FXUS66 KHNX 011118
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
318 AM PST SUN MAR 1 2026
UPDATE
AVIATION SECTION UPDATED.
KEY MESSAGES
1. THERE IS A 30 TO 40 PERCENT PERCENT CHANCE OF DENSE FOG TO
FORM IN PORTIONS OF THE SAN JOAQUIN VALLEY EARLY SUNDAY MORNING.
2. A LOW PRESSURE SYSTEM BRINGS CHANCES OF PRECIPITATION OVER
THE SIERRA NEVADA ON SUNDAY AND MONDAY WITH SNOW LEVELS AT 7,000
TO 8,000 FEET.
3. A WIND ADVISORY HAS BEEN ISSUED FROM SUNDAY MORNING THROUGH
MONDAY EVENING DUE TO EXPECTED GUSTY WINDS ALONG THE MOJAVE
SLOPES AND INTO THE DESERT.
DISCUSSION
TEMPERATURES WERE AT LEAST A FEW DEGREES WARMER THAN YESTERDAY,
OR ABOUT 10-15 DEGREES ABOVE SEASONAL AVERAGES. TEMPERATURES
AT THIS TIME REMAIN IN THE 70'S AT THE WARMEST LOCATIONS,
INCLUDING IN THE SAN JOAQUIN VALLEY. MANY LOCATIONS REACHED
INTO THE 80'S. TEMPERATURES WILL BE ON THE DOWNTREND FOR SUNDAY,
BUT EXPECT HIGHS TO TOP 80 DEGREES ONCE AGAIN AT SOME LOCATIONS
IN KERN COUNTY ON SUNDAY (PROBABILITIES IN THE SOUTH VALLEY ARE
AT 70-80 PERCENT AND 30-40 PERCENT IN THE DESERT AREAS). A
MODERATE CHANCE (30-40 PERCENT) AT BEST EXISTS FOR DENSE FOG TO
FORM IN THE CENTRAL VALLEY BY EARLY SUNDAY MORNING, ALTHOUGH
LATEST HIGH RESOLUTION GUIDANCE SUGGESTS VISIBILITY IN MOST
AREAS WILL REMAIN ABOVE ONE QUARTER OF A MILE. AS TEMPERATURES
WERE WARMER TODAY, IT WILL TAKE SOME TIME FOR FOG DEVELOPMENT.
ANY FOG THAT DEVELOPS WILL BE PATCHY AND SHALLOW, GENERALLY
ABOUT 2-3 HOURS ON EACH SIDE OF SUNRISE. LATEST GUIDANCE
SUGGESTS MAINLY CLEAR CONDITIONS OVER THE REMAINDER OF THE
FORECAST AREA TONIGHT.
FOR SUNDAY, A LOW PRESSURE SYSTEM APPROACHES AND BRINGS THE NEXT
CHANCE FOR PRECIPITATION. HOWEVER, PRECIPITATION WILL BE LIGHT,
ALTHOUGH THERE IS MODERATE TO HIGH CONFIDENCE (60-70 PERCENT
CHANCE) THAT WE WILL SEE A TENTH OF AN INCH OVER THE SIERRA
NEVADA AND ADJACENT FOOTHILLS. THE POSSIBILITY OF ANY LOCATION
RECEIVING AT LEAST 0.25 INCH IS MUCH LOWER, OR ABOUT 20-30
PERCENT IN THE HIGHEST ELEVATIONS. SNOWFALL AMOUNTS ARE
GENERALLY A DUSTING UP TO AN INCH WITH SNOW LEVELS OF 7,000 TO
8,000 FEET. THERE IS ALSO A 10 PERCENT CHANCE FOR AN ISOLATED
THUNDERSTORM BY THE AFTERNOON OVER YOSEMITE NP. CHANCES FOR
LIGHT LINGERING SHOWERS WILL LAST UNTIL MONDAY AFTERNOON.
OTHERWISE, IT IS MORE CERTAIN THAT COOLER TEMPERATURES AND
GUSTY WINDS DEVELOP OVER THE SIERRA NEVADA CREST AND KERN COUNTY
MOUNTAINS AND DESERT WITH A HIGH PROBABILITY (70-80 PERCENT
CHANCE) OF GUSTS AT LEAST 40 MPH.
ANOTHER LOW PRESSURE SYSTEM BRINGS A SLIGHT CHANCE FOR SIERRA
PRECIPITATION ON WEDNESDAY INTO THURSDAY ALONG WITH ANOTHER
ROUND OF INCREASED WINDS. OTHERWISE, DRY CONDITIONS AND
SEASONAL TEMPERATURES PREVAIL FOR THE NEXT SEVERAL DAYS. LATEST
CPC OUTLOOKS CONTINUE TO SHOW AT LEAST A SLIGHT TILT IN THE ODDS
TOWARDS BELOW AVERAGE PRECIPITATION AND ABOVE AVERAGE
TEMPERATURES FOR THE 6-10 DAY AND 8-14 DAY PERIODS.
AVIATION
VFR CONDITIONS WILL PREVAIL ACROSS THE CENTRAL CALIFORNIA
INTERIOR FOR THE NEXT 24 HOURS WITH A 30-50% CHANCE FOR
IFR/LIFR CONDITIONS THROUGH 17Z SUNDAY FOR THE SAN JOAQUIN
VALLEY. HOWEVER, IFR CONDITIONS IS POSSIBLE FOR THE SIERRA
NEVADA NEAR YOSEMITE BETWEEN 18Z SUNDAY AND 12Z MONDAY.
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
WIND ADVISORY FROM 10 AM THIS MORNING TO 10 PM PST MONDAY FOR
CAZ337>339.
PUBLIC...BSO
AVIATION....JPK
WEATHER.GOV/HANFORD
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