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FXUS66 KHNX 032127 AFDHNX

Area Forecast Discussion National Weather Service Hanford CA 127 PM PST Sun Dec 3 2023


SYNOPSIS
High temperatures today will be normal for this time of year.
Beginning tomorrow, a brief warmup will last through Wednesday, before cooling back down on Thursday. There is the potential for fog tomorrow morning and Tuesday morning throughout the San Joaquin Valley. On Thursday and Friday, there is a chance of rain in the northern San Joaquin Valley and snow in the Central Sierra Nevada.

DISCUSSION
The high pressure ridging over California continues to build through today and tomorrow, bringing near normal temperatures throughout the San Joaquin Valley today for this time of year, with high 50s to low 60s expected. This ridging will also bring dense fog - where visibility is below 1/4 mile - chances to the valley tomorrow and tomorrow morning. HRRR model guidance shows a 30 percent chance of patchy dense fog north of Fresno for tomorrow morning. Chances for dense fog rise to 50-60 percent for Tuesday morning, and spread southward to include areas north of Hanford as well.

As the ridging builds through the week, temperatures will rise.
Wednesday will be the peak of this warmup, with many locations in the valley having a 30-80 percent chance of seeing 70 degrees as a high temperature. These temperatures are very warm for this time of year, around 10 degrees below normal, and are near record- breaking temperatures for certain cities within the forecast area.

On Thursday, temperatures will cool as a cold front will begin moving into the area. This cold front will also bring a chance of rain to the northern San Joaquin Valley and a chance of snow to the Central Sierra Nevada on Thursday and Friday. Areas in the northern San Joaquin Valley have a 20-30 percent chance of seeing a tenth of an inch of precipitation or less. For the Sierra Nevada, probabilities start off very low in the Kern County mountains at less than 10 percent for a quarter of an inch and increase northward, with Yosemite National Park at a 50 percent chance of seeing a quarter of an inch of snow. Additionally, winds behind the cold front could bring some elevated wind gusts to the Kern County mountains and desert on Friday.


AVIATION
MVFR visibility expected overnight in the SJ Valley. Should IFR conditions occur with fog, they will be mainly north of Fresno around 13Z-16Z Sunday; latest model guidance suggests around a 30 percent chance. Otherwise, VFR conditions across the Central California interior will prevail for the next 24 hours.



AIR QUALITY ISSUES
ISSUED: 12/03/2023 13:05 EXPIRES: 12/04/2023 23:59 On Monday December 4 2023, 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 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
None.

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San Joaquin Valley, CA,