500
FXUS66 KHNX 151811
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HANFORD CA
1111 AM PDT SUN JUN 15 2025
KEY MESSAGES
1. DRIER AIR WILL CAUSE MINIMUM RELATIVE HUMIDITY TO FALL
BETWEEN 10 AND 20 PERCENT FOR MUCH OF THE REGION THROUGH THE
FORECAST PERIOD. THERE IS MODERATE FIRE RISK AS A RESULT.
2. TEMPERATURES ARE EXPECTED NEAR NORMAL FOR MUCH OF THE AREA
WITH MINOR HEAT RISK IN THE SAN JOAQUIN VALLEY AND MODERATE
HEAT RISK IN THE KERN COUNTY DESERT.
3. STRONGER WIND GUSTS ARE POSSIBLE IN THE MOJAVE DESERT SLOPES
MONDAY AFTERNOON INTO TUESDAY MORNING; THERE IS A 40 TO 80
PERCENT CHANCE FOR GUSTS GREATER THAN 45 MPH.
DISCUSSION
A SLIGHT BUILDING OF A HIGH PRESSURE RIDGE TO OUR SOUTHEAST WILL
RESULT IN WARMER TEMEPRATURES THIS AFTERNOON COMPARED TO THE
PAST FEW DAYS. THESE WARMER TEMPERATURES WILL GIVE WAY TO NEAR
AVERAGE CONDITIONS TOMORROW AND TUESDAY AS A SHORTWAVE TROUGH
PASSES THROUGH CENTRAL CALIFORNIA. THE ORIENTATION OF THIS PIECE
OF ENERGY IS EXPECTED TO CAUSE STRONGER WINDS TO DEVELOP IN THE
LEE SIDE OF THE LOCAL RANGES, PARTICULARLY IN THE WEST SIDE
HILLS AND THE MOJAVE SLOPES/WALKER PASS AREA.
A SUDDEN WARM UP WILL FOLLOW MIDWEEK AS HIGH PRESSURE BUILDS IN
AGAIN BEHIND THE AFOREMENTIONED TROUGH. THERE IS A 30 TO 60
PERCENT CHANCE FOR MUCH OF THE SAN JOAQUIN VALLEY TO EXCEED 100
DEGREES WEDNESDAY, WITH LOWER CHANCES ON THURSDAY EXCEPT FOR
BAKERSFIELD (80 PERCENT CHANCE), HANFORD (55 PERCENT CHANCE),
AND VISALIA (65 PERCENT CHANCE).
A MUCH STRONGER TROUGH DROPPING SOUTHWARD FROM THE PACIFIC
NORTHWEST WILL RESULT IN A COOLING TREND INTO NEXT WEEKEND WITH
POTENTIAL FOR BELOW-AVERAGE TEMPERATURES IN THE UPPER 80S NEXT
SATURDAY.
AVIATION
18Z UPDATE:
VFR CONDITIONS WILL PREVAIL FOR THE NEXT 24 HOURS ACROSS THE CENTRAL
CALIFORNIA INTERIOR.
FIRE WEATHER
WIDESPREAD RELATIVE HUMIDITY VALUES IN THE 10 TO 20 PERCENT
RANGE REMAIN EXPECTED THROUGH THE NEXT WEEK. AS WE HAVE SEEN
PREVIOUSLY, HUNDRED TO THOUSAND ACRE GRASS FIRES HAVE SPRUNG UP
AS A RESULT OF THESE LOW RH VALUES AND STRONGER LATE AFTERNOON
WINDS. WITH THE INCOMING TROUGH TOMORROW AND TUESDAY, ELEVATED WIND
GUSTS PAIRED WITH THE LOW RH WILL CONTINUE TO BRING A MODERATE
RISK FOR FIRE DEVELOPMENT AND SPREAD.
AIR QUALITY ISSUES
ISSUED: 06/14/2025 15:38
EXPIRES: 06/15/2025 23:59
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/AVIATION...MCCOY
WEATHER.GOV/HANFORD
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