Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
Issued by NWS San Joaquin Valley, CA
225 FXUS66 KHNX 060910 AFDHNX Area Forecast Discussion National Weather Service Hanford CA 210 AM PDT Sun Oct 6 2024 && .KEY MESSAGES... 1. Dry conditions and well above temperatures will prevail through the week. There is a 55 to 85 percent chance of triple digit heat across much of the San Joaquin Valley this afternoon. 2. A Heat Advisory remains in effect of the San Joaquin Valley, West Side Hills and Sierra Foothills through 11 PM PDT tonight. 3. Low afternoon humidity will occur across many locations along with poor to moderate overnight recoveries in the mountains and deserts. 4. The Climate Prediction Center`s 6-10 and 8-14 day temperature outlooks show a 50 to 70 percent chance for above average temperatures across the region. && .DISCUSSION... A high pressure ridge continues to dominate over Central California, leading to triple digit heat in the lower elevations and low relative humidity across the region. These triple digits are expected to continue through today and have a 30 to 50 percent chance of occuring on Monday, as well. Temperatures like these are well above normal for this time of year. This ridging is expected to weaken with the arrival of a shortwave into California beginning Tuesday, resulting in a slight cool down, though temperatures will continue to be above normal. This short wave is followed by a larger trough expected to come in on Friday, which is expected to lower temepratures further until they are only slightly above normal. The coolest days are expected to be that day and Saturday, with a 30 to 60 percent chance of high temperatures being below 85 degrees. This will be short-lived as next Sunday expects an increase in temperatures again. Looking into the long term, above normal temperatures are expected to continue into the middle of the month, with the Climate Prediction Center showing a 50 to 70 percent chance for those above average temperatures. Low relative humidities are also expected to persist through this time period. && .AVIATION... VFR conditions will prevail across the Central CA Interior over the next 24 hours. && .AIR QUALITY ISSUES... ISSUED: 10/05/2024 14:49 EXPIRES: 10/06/2024 23:59 None. && .CERTAINTY... The level of certainty for days 1 and 2 is medium. 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... Heat Advisory until 11 PM PDT this evening for CAZ300>322. && $$ Public/Aviation/Fire Weather..........EW DSS/PIO...............................CM weather.gov/hanford