Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
Issued by NWS San Joaquin Valley, CA
001 FXUS66 KHNX 270841 AFDHNX Area Forecast Discussion National Weather Service Hanford CA 1241 AM PST Thu Nov 27 2025 && .KEY MESSAGES... 1. Dense Fog Advisory issued for the San Joaquin Valley valid through 1 PM Thursday due to persistent chances for fog each night and morning through that timeframe. 2. Temperatures near to just below season averages through the week. 3. Indications for back-to-back dry low pressure systems sliding in over the weekend to end the month and Tuesday into Wednesday to begin December. && .DISCUSSION... Stratus lingered around again yesterday which helped keep things cool. This was due to the ridge of high pressure over the West Coast. The stratus is anticipated to break today due to warmer temperatures with the higher cloud deck and the change over the weekend. Yet, we have a 70 to 95 percent chance of highs of at least 60 degrees for most of the Valley in the NBM. However, latest model ensembles have changed as a shortwave trough that has been monitored the past few days remains weak in the latest runs and goes over the Rockies instead. However, two new troughs are of note. The first one is a faster moving trough to the west of the ridge which will cutoff early Friday before shifting well south and parks itself between Hawaii and Baja California. At the same time, a new shortwave slides in from Alaska on Saturday as an inside slider through Sunday into Monday. However, the models continue to back off with any precipitation as there is now a less than 10 percent chance of any rain in the Valley and even a 20 percent or less chance of any snow accumulation. The ensembles have another shortwave trough sliding down Tuesday into Wednesday. Both have it being an inside slider but the precip chances are still low with this one as it will have a drier flow from Alaska and interior Canada than from the Gulf of Alaska or the Central Pacific. && .AVIATION... IFR to MVFR ceilings and visibilities will persist in most Valley locations through 18Z Thursday. After 18Z, conditions will improve especially after 20Z. However, MVFR to IFR conditions return around 06Z Friday for the overnight hours. && .AIR QUALITY ISSUES... ISSUED: 11/26/2025 13:52 EXPIRES: 11/27/2025 23:59 On Thursday November 27 2025, Fireplace/Wood Stove Burning Status is: No Burning Unless Registered in Fresno, Kern, Kings, Madera, and Tulare Counties. Burning Discouraged in Merced County, and Kern (Greater Frazier Park Area) and Sequoia National Park and Forest. && .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... Dense Fog Advisory until 1 PM PST this afternoon for CAZ301>303-305>307-309>312-314-315. && $$ JPK weather.gov/hanford