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Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
Issued by NWS San Joaquin Valley, CA
883 FXUS66 KHNX 112011 AFDHNX Area Forecast Discussion National Weather Service Hanford CA 111 PM PDT Sun Aug 11 2024 .KEY MESSAGES... 1. Temperatures will trend cooler today and lower to near normal by Monday. 2. Based on the incoming trough, confidence is growing for a stretch of near-normal temperatures for much of this week. 3. Despite moderating relative humidity values, the risk of grass fires continues with elevated afternoon winds. Today and Monday will see an increase in winds across prone areas. && .DISCUSSION... An upper ridge over the southwest will provide one more day of widespread triple digit heat and a moderate HeatRisk across the San Joaquin Valley. Temperatures are forecast to top out around 4 to 8 degrees above climatological averages for this time of the year. Satellite loops show some high clouds moving east from SF Bay across central California ahead of an approaching system off the coast. This trough will move inland on Monday and lower temperatures to right around average. The latest probabilities of exceedance for 100 degrees on Monday drop to only 10 percent or less across the SJ Valley. Temperatures will remain close to average through the work week with additional short wave energy passing over northern California. Cluster analysis is favoring a closed low forming along or just off the Pacific Northwest coast by Friday and persisting through next weekend. Temperatures are forecast to be slightly below average with highs in the lower to mid 90s across the SJ Valley. Otherwise, conditions will remain dry with afternoon and evening breezes developing each day but with some enhanced wind gusts tonight through Monday due to the approaching trough. && .AVIATION...Areas of MVFR and local IFR visibilities will continue in and around wildfires. Otherwise, VFR conditions will prevail across the central CA interior over the next 24 hours. && .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. && $$ DCH weather.gov/hanford