453
FXUS66 KHNX 102231
AFDHNX

Area Forecast Discussion
National Weather Service Hanford CA
331 PM PDT Thu Sep 10 2026


&&

.DISCUSSION...
The ridging that produced the triple digits across the Valley and
Mojave Desert will strengthen slightly through tomorrow, leading to
highs a couple degrees higher today. Lows at night fall in the upper
60`s into the mid 70`s for the Valley. Unfortunately for those in
the Desert, West Side Hills and Sierra Foothills, sweating overnight
may be more prominent with lows in the upper 70s to low 80s. These
conditions fall under the Moderate to Major Heat Risk categories,
which affect much of the population without proper cooling like air
conditioning. Make sure to keep that pillow cool.

That blistering oven heat will be short lived, as the ridge causing
it will be pushed east by an incoming trough, which will lower
temperatures in the Valley into the mid to upper 80`s by Sunday. You
will no longer be able to cook an egg on the sidewalk. Though, as
this trough moves through the region on Friday, tight pressure
gradients with its leading edge will cause strong winds along the
Mojave Slopes and breezy conditions for the Valley. Current
probabilities for 45 MPH gusts along the Mojave Slopes is 50-75% on
Friday, and 30-50% on Saturday. This system is also likely to be a
dry one, so while temperatures will be cooler, so will dew points,
making the relative humidities remain stable through the week. So
with the breezy winds and low minRHs, fire risk may be elevated,
even as we transition to the shoulder season.

After this weekend, the 500mb heights are expected to retain a
trough-like pattern through much of the work week, though the
intensity is expected to be reduced from what we are likely to
see this Friday, meaning temperatures will rise slightly while
remaining in the upper 80`s by Monday, then remaining steady through
at least next Thursday as the pattern keeps its shape. Thankfully
a cooldown is on the horizon.

The long term forecast is similar for the 6 to 10 day forecast,
as the Climate Prediction has our area in likely near normal
temperatures for that time period. This chances by the 8 to 14
day outlook, becoming leaning above normal for temperatures,
meaning a new ridge may build in by that time period, though triple
digits become less likely as we move deeper into September. There is
high confidence that temperatures will be slightly above normal
starting next Wednesday. Behold, thereth existseth an outlier in the
model predicting a cooler solution with low confidence. Don`t worry
though, this means less likelihood of overheating through the end of
da week. Yay!


&&


.AVIATION...
VFR conditions expected for the next 24 hours. A 5 to 15 percent
chance of thunderstorm along the Sierra Nevada Crest from
Yosemite to Tulare County from 19Z Thursday through 03Z Friday.

&&

.AIR QUALITY ISSUES...
None

&&

KEY MESSAGES...

1. Heat Advisory remains in effect for the San Joaquin Valley,
Sierra Foothills and West Side Hills along the Coastal Range
through 10 PM tonight.

2. There is a moderate to major heat risk for the rest of today
into this evening.

3. There is a 75-85% chance of wind gusts greater than 45 mph
in the Mojave Desert Slopes overnight tonight into early
tomorrow morning.

4. There is above average confidence that temperatures will be
hotter and drier beginning in the middle of next week.


AVIATION...
VFR conditions expected for the next 24 hours. A 5 to 15 percent
chance of thunderstorm along the Sierra Nevada Crest from
Yosemite to Tulare County from 19Z Thursday through 03Z Friday.

CERTAINTY...

The level of certainty for days 1 and 2 is high.
The level of certainty for days 3 through 7 is high.

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 10 PM PDT this evening for CAZ300>317-319-
321.
&&

$$

public...Moore / MC
aviation....Moore / MC

weather.gov/hanford