549
FXUS66 KHNX 261908
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
1208 PM PDT SUN APR 26 2026
KEY MESSAGES
1. SLIGHT CHANCES FOR SHOWERS CONTINUE OVER THE REGION THIS
AFTERNOON, WITH THE MAIN FOCUS IN THE HIGHER ELEVATIONS OF THE
SIERRA NEVADA.
2. WIND ADVISORY CONTINUES FOR THE MOJAVE DESERT AND SLOPES
THROUGH 5 AM MONDAY.
3. SLIGHT CHANCES FOR PRECIPITATION CONTINUE EACH DAY OVER THE
HIGHER ELEVATIONS OF THE REGION UNTIL WEDNESDAY.
4. WARMING TREND TO END THIS WEEK.
DISCUSSION
THE LOCALIZED CUTOFF LOW PRESSURE SYSTEM FROM YESTERDAY HAS
PROGRESSED EASTWARD INTO THE GREAT BASIN, THOUGH A SHORTWAVE
TROUGH EXTENDING SOUTH FROM THE PACIFIC NORTHWEST HAS BUILT IN
IN ITS WAKE. THIS TROUGH WILL MOVE SOUTHWARD SLOWLY OVER THE
NEXT 12 TO 18 HOURS WHICH WILL BRING ADDITIONAL CHANCES FOR
PRECIPITATION TO CENTRAL CALIFORNIA, ESPECIALLY FOR THE SIERRA
NEVADA. THROUGH 5AM MONDAY, THERE REMAINS A 40 TO 50 PERCENT
PROBABILITY FOR ONE-TENTH OF AN INCH OR MORE OF ADDITIONAL
PRECIPITATION ABOVE FOUR TO FIVE THOUSAND FEET. SNOW LEVELS ARE
PROJECTED TO BE ABOVE SIX THOUSAND FEET, WITH ONLY MINOR
PROBABILITIES (LESS THAN 20 PERCENT) FOR AN ADDITIONAL TWO
INCHES OF SNOWFALL. WITH THE TROUGH TRACKING FROM THE NORTH,
STRONGER WESTERLY WIND GUSTS WILL PREVAIL ACROSS THE MOJAVE
DESERT AS THEY FLOW CYCLONICALLY AROUND THE TROUGH'S AXIS.
THROUGH 11 PM TONIGHT, THERE REMAINS A 70 TO 80 PERCENT
PROBABILITY FOR MAXIMUM GUSTS TO EXCEED 50 MPH IN THESE AREAS
AND, AS SUCH, A WIND ADVISORY REMAINS IN EFFECT UNTIL 7 AM
MONDAY.
THROUGH EARLY THURSDAY, MULTIPLE WEAK PIECES OF ENERGY ARE
ANTICIPATED TO AFFECT CENTRAL CALIFORNIA, BRINGING ADDITIONAL
LIGHT PRECIPITATION, MAINLY TO THE SIERRA NEVADA. TOWARDS THE
END OF THIS WEEK, A HIGH PRESSURE RIDGE WILL GRADUALLY BUILD IN,
RAISING TEMPERATURES INTO THE WEEKEND. BOTH FRIDAY AND SATURDAY
HAVE A 70 TO 80 PERCENT PROBABILITY FOR MAXIMUM TEMPERATURES TO
EXCEED 85 DEGREES IN THE SAN JOAQUIN VALLEY AND THE KERN DESERT.
IN THE LATTER PART OF NEXT WEEKEND, CLUSTER ANALYSIS IS
INDICATING POTENTIAL FOR ANOTHER CUT-OFF LOW PRESSURE SYSTEM TO
DROP SOUTHWARD ALONG THE PACIFIC COASTLINE. AN ADDITIONAL SYSTEM
WOULD EXTEND OUR ACTIVE PERIOD FURTHER, WITH CONTINUING CHANCES
FOR PRECIPITATION INTO NEXT WEEK.
AVIATION
IFR TO MVFR CONDITIONS OVER THE SIERRA NEVADA THROUGH AT LEAST
00Z IN SHOWERS AND CLOUDS. OTHERWISE, VFR CONDITIONS WILL
PREVAIL FOR THE NEXT 24 HOURS. WINDS OF 15 TO 25 MPH IN THE
MOJAVE SLOPES AND DESERT THROUGH 12Z MONDAY WITH GUSTS UP TO 55
MPH.
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 UNTIL 5 AM PDT MONDAY FOR CAZ337>339.
PUBLIC/AVIATION...MCCOY
WEATHER.GOV/HANFORD
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