059 FXUS66 KHNX 090601 AFDHNX Area Forecast Discussion National Weather Service Hanford CA 1101 PM PDT Sun Jun 8 2025 .KEY MESSAGES... 1. Expect gradual warming through midweek with Moderate Heat Risk for much of the lower elevations. 2. There is a 15 to 25 percent chance for thunderstorms in the Sierra Nevada this afternoon and evening. Slight (10-20%) chances for thunderstorms continue on Monday. 3. A cooling trend arrives later this week and lasts into the following weekend. && .DISCUSSION... An upper-level trough and associated low remains off the Central CA coast and is forecast to move inland tonight into Monday. Today`s highs will likely be similar to yesterday`s. High temperatures in the warmest locations will reach the mid to upper-90s today, and a few desert locations will once again reach into the triple digits. Thunderstorms in the Sierra Nevada have generally a 15-25% chance of development this afternoon and will likely dissipate by the early evening. Slight (10-20%) chances for afternoon thunderstorms continue into Monday. Otherwise, dry conditions prevail throughout our portion of Central CA. High temperatures will continue to warm Monday through the middle of the week. More locations can expect to reach triple digits by Monday or Tuesday. Chances for triple digit heat from Monday until Wednesday range from 30-70 percent in the SJ Valley and also about 30-70 percent for highs to reach or top 105 in 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 towards midweek, or to around 15-20% beginning Tuesday. A low to moderate risk for grass or brush fires exists this week. Practice cold water safety if venturing into the lakes and waterways, as water continues to flow cold and fast! Snowpack is still melting in the higher elevations of the Sierra Nevada as is typical for this time of year. Milder temperatures are in store for later in the week into the following weekend. Highs may struggle to top 90 degrees in some valley locations on Friday and Saturday, as chances are at 20-55 percent for a high below 90 degrees for Friday and rise to around 40-75 percent on Saturday. This cooling trend may bring increased winds to the prone areas, such as the West Side Mountains and possibly into the Kern County desert. For now, the latest CPC outlooks show odds tilted towards below average temperatures for both the 6-10 day period and near average temepratures during the 8-14 day period. Highs in the lower 90s are average for this time of year, including by mid June. && .AVIATION... 06Z Update: VFR conditions will prevail for the next 24 hours across the Central California Interior. A 15-25 percent chance of thunderstorms exists in the Sierra Nevada from 18Z Monday until 03Z Tuesday. && .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/JPK weather.gov/hanford