Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
Issued by NWS San Joaquin Valley, CA
156 FXUS66 KHNX 061628 AFDHNX Area Forecast Discussion National Weather Service Hanford CA 928 AM PDT Fri Jun 6 2025 .KEY MESSAGES... 1. Expect warming today into next week; Moderate Heat Risk returns by at least this weekend and lasts into the middle of next week. 2. There is a 15 to 30 percent chance for thunderstorms in the Sierra Nevada this afternoon, with the Storm Prediction Center issuing a General Risk for thunderstorms for this area. Slight (10-20%) chances for thunderstorm continue over the weekend. && .DISCUSSION... High pressure is building over our area with an upper-level shortwave off the Central CA coast based on latest satellite images. Expect warmer temperatures today and a gradual warming this weekend into early next week. High temperatures in the warmest locations will reach the mid to upper-90s today, and a few locations, such as in the Indian Wells Valley in northeastern Kern County, reach into the triple digits by Saturday. Thunderstorms in the Sierra Nevada have a low to moderate (15-30%) chance of development this afternoon and will likely dissipate by the early evening. Slight (10-20%) chances for afternoon thunderstorms continue over the weekend. Otherwise, dry conditions prevail throughout our portion of Central CA. High temperatures will continue to warm Sunday into early next week. More locations can expect to reach triple digits. Chances for triple digit heat from Saturday into the middle of next week range from 25-50 percent in the SJ Valley to around 30-60 percent for the Kern County desert, with the best chances towards Ridgecrest/Inyokern. Afternoon humidity will also remain quite low in these hot spots and could lower a bit by the middle of the week. A low to moderate risk for grass or brush fires exists. Practice cold water safety if venturing into the lakes and waterways, as water continues to flow cold and fast! && .AVIATION... 18Z Update: VFR conditions will prevail for the next 24 hours across the Central California Interior. A 15-30 percent chance of thunderstorms exists in the Sierra Nevada from 18Z Friday until 03Z Saturday. && .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. && $$ BSO/SM weather.gov/hanford