Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
Issued by NWS San Joaquin Valley, CA
295 FXUS66 KHNX 152324 AFDHNX Area Forecast Discussion National Weather Service Hanford CA 424 PM PDT Sun Jun 15 2025 .UPDATE... Aviation, Air Quality and Key Messages Updated. && && .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. A Wind Advisory is in effect from 2 PM Monday through 2 AM Tuesday. && .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... 0Z Update: VFR conditions will prevail for the next 24 hours across the Central California Interior. && .AIR QUALITY ISSUES... ISSUED: 06/15/2025 14:59 EXPIRES: 06/16/2025 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... Wind Advisory from 2 PM Monday to 2 AM PDT Tuesday for CAZ338. && $$ public...SM aviation....JPK weather.gov/hanford