490
FXUS66 KHNX 280607
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
1107 PM PDT MON APR 27 2026
KEY MESSAGES
1. WARMING TREND THROUGH THE WEEK INTO THE WEEKEND.
2. 5 TO 15 PERCENT CHANCE OF THUNDERSTORMS IN THE SIERRA NEVADA
THROUGH THURSDAY.
3. NEXT BEST CHANCE OF RAIN FOR THE VALLEY COMES NEXT WEEK.
DISCUSSION
A SHORTWAVE TROUGH SLIDES THROUGH THE AREA ON TUESDAY KEEPING
THINGS UNSTABLE WITH A 5 TO 15 PERCENT CHANCE OF THUNDERSTORMS
OVER THE SIERRA NEVADA. HOWEVER, THE SHORTWAVE MOVES AWAY ON
WEDNESDAY AS A REX BLOCK MOVES IN WHICH WILL CONTINUE THE
WARMING TREND. THE CUTOFF LOW FROM THE REX BLOCK WILL SLIDE AWAY
ON THURSDAY LEAVING THE RIDGE IN PLACE.
TEMPERATURES CONTINUE TO CLIMB INTO THE WEEKEND. FRIDAY HAS A 25
TO 50 PERCENT CHANCE OF HIGHS OF AT LEAST 90 DEGREES AND
SATURDAY HAS A 55 TO 65 PERCENT CHANCE OF HIGHS IN THE 90S.
SUNDAY BRINGS SLIGHTLY COOLER TEMPERATURES AS A LOW CUTS OFF AND
SLIDES THROUGH THE AREA SUNDAY INTO MONDAY. THIS SYSTEM BRINGS
THE NEXT CHANCE OF RAIN ALBEIT A 15 TO 25 PERCENT CHANCE OF ANY
ACCUMULATION ON MONDAY IN THE VALLEY. THE CPC 6-10 DAY OUTLOOK
HAS EQUAL CHANCES OF ABOVE AND BELOW AVERAGE TEMPERATURES WITH A
50 TO 60 PERCENT CHANCE OF ABOVE AVERAGE PRECIPITATION. ON THE
OTHER HAND, THE 8 TO 14 DAY OUTLOOK HAS A 40 TO 50 PERCENT
CHANCE OF BOTH ABOVE AVERAGE TEMPERATURES AND ABOVE AVERAGE
PRECIPITATION.
AVIATION
VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24 HOURS OVER CENTRAL
CALIFORNIA. HOWEVER, THERE IS A 5 TO 15 PERCENT CHANCE OF
THUNDERSTORMS AFTER 18Z OVER THE SIERRA NEVADA.
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.
JPK
WEATHER.GOV/HANFORD
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page