Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
Issued by NWS San Joaquin Valley, CA
494 FXUS66 KHNX 191105 AFDHNX Area Forecast Discussion National Weather Service Hanford CA 405 AM PDT Wed Jun 19 2024 .KEY MESSAGES... 1. Temperatures near average through Thursday then warming to 10 to 15 degrees above average this weekend with widespread triple digit maximum temperatures across the lower elevations. 2. An Excessive Heat Watch has been issued for the San Joaquin Valley, West Side Hills, Sierra Nevada Foothills, and Kern River Valley from Saturday morning through late Monday night. 3. 51 to 86% probability of 105 degrees across the San Joaquin Valley on Saturday. 41 to 76% probability of 105 degrees across the San Joaquin Valley on Sunday. && .DISCUSSION... An upper trough remained over the west on Tuesday with scattered high clouds through the day. Temperatures topped out around 1-4 degrees below climatological averages for this time of the year. The trough will continue over the region for the next couple of days with near average temperatures expected today and slightly above average on Thursday. An upper ridge will begin to build in on Friday and temperatures will climb to around 5 to 8 degrees above average. The ridge is expected to strengthen over the weekend causing temperatures to soar into the triple digits across the lower elevations. Latest guidance has a widespread major heat risk across the San Joaquin Valley, adjacent foothills, and Kern River Valley on Saturday. The coverage for a major heat risk decreases a little on Sunday and then more on Monday. An Excessive Heat Watch has been issued for the San Joaquin Valley, West Side Hills, Sierra Foothills, and Kern River Valley from Saturday morning through late Monday night. Temperatures are not expected to change much next Tuesday and Wednesday with a widespread moderate heat risk continuing in the lower elevations. Dry conditions will persist with very low afternoon humidities followed by some poor to moderate overnight recoveries. && .AVIATION...VFR conditions will prevail across the Central CA interior for 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... Excessive Heat Watch from Saturday morning through late Monday night for CAZ300>317-319-321-332. && $$ DCH weather.gov/hanford