960
FXUS66 KHNX 062302
AFDHNX

Area Forecast Discussion
National Weather Service Hanford CA
1103 AM PST Sat Dec 6 2025


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.KEY MESSAGES...
1. Fog and low clouds will continue each night and morning across
the San Joaquin Valley into early next week. Dense fog will also
develop at times in the lower Sierra foothills, coastal ranges, and
the Grapevine.

2. A gradual warming trend will occur in the mountains and
desert until next week, as the high pressure pattern continues
over the region.

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.DISCUSSION...
Overcast conditions continue to linger over the San Joaquin
Valley this morning, with foggy conditions and low visibilities
in the foothill areas where the cloud deck is interacting with
the local terrain. Clearing is less favorable today compared to
previous days due to a prominent high pressure ridge building
in from the west. This ridge will maintain the low level
temperature inversion currently in place for much of the day,
keeping the moisture trapped around one thousand feet above
ground level. With minimal clearing, fog has less potential for
tomorrow morning in the valley areas, with less than a 30
percent chance for visibilities less than a quarter mile. These
chances improve to 50 to 60 percent for the foothill areas of
the Sierra Nevada, Kern County Mountains, and the Coastal Range.

This pattern is expected to continue through the weekend as the
high pressure remains present over the region. As we move into
next week, cluster analysis expresses confidence in the high
pressure strengthening over central California. As the high
pressure builds, a warming trend will take place, especially in
the area mountains and foothills where afternoon highs will rise
well above season averages. By Wednesday, areas including (but
not limited to) Oakhurst, Tehachapi, and Three Rivers have a 50
to 60 percent probability to exceed 65 degrees, some five to ten
degrees above season average. Yosemite Valley, which averages
around 45 degrees at this time of year, has a 70 to 80 percent
probability to exceed 70 degrees Wednesday, Thursday, and Friday
of next week.

&&


.AVIATION...
IFR ceilings and visibilities are expected to prevail for much of
the San Joaquin Valley (except for KMCE with MVFR conditions)
through the remainder of the afternoon and overnight, with falling
ceilings below 2SM after 06Z Sunday. These conditions will continue
through 18Z Sunday. LIFR conditions will also persist in the coastal
ranges, Sierra foothills, and the Kern County mountains due to the
low stratus deck. Otherwise, VFR conditions will prevail in the
Sierra Nevada and in the Kern County Mountains and Desert over the
next 24 hours.

&&

.AIR QUALITY ISSUES...
On Saturday December 6 2025, Fireplace/Wood Stove Burning
Status is: No Burning Unless Registered in Fresno, Kern, Kings,
Madera, Merced, and Tulare Counties. Burning Discouraged in
Kern (Greater Frazier Park Area) and Sequoia National Park and
Forest.



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.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 noon PST today for CAZ300-335.
&&

$$

public/aviation...McCoy

weather.gov/hanford