Terra Bella, California Weather Forecast Discussion

867
FXUS66 KHNX 082305
AFDHNX
Area Forecast Discussion
National Weather Service Hanford CA
405 PM PDT Mon Sep 8 2025
.KEY MESSAGES...
1. Thick smoke from the Garnet Fire will move across the Sierra
Nevada portions of Madera, Fresno and Tulare Counties this
afternoon and overnight into Tuesday morning. A Dense Smoke
Advisory is in effect for poor air quality and low visibilities
affecting those areas.
2. Temperatures continue to drop through the week before a brief
rebound over the weekend.
3. Thunderstorm chances are expected to return to the Sierra
Nevada by Tuesday and last through Thursday, with the greatest
chances on Wednesday and Thursday with a 10-30% probability for
development concentrated to the mountains north of Tulare
County.
&&
.DISCUSSION...
A major trough is making its way to California over the next few
days bringing cooler temperatures. Latest probabilities have a
major drop to a 20 percent chance or less of high temperatures
of at least 85 degrees on Wednesday. In addition, Tuesday
through Thursday brings a 10 to 40 percent chance of rain
accumulation in the San Joaquin Valley with Merced and Mariposa
having the highest probabilities. The foothills will have a 10
to 30 percent chance of at least a tenth of an inch of rain
Wednesday and Thursday. Frontal thunderstorms also are possible
over the Sierra Nevada TUesday through Thursday with a 10 to 30
percent chance. However, the trough pattern will continue to
help push smoke from the Garnet Fire northeast into Nevada.
Temperatures rebound on Friday and Saturday as the initial
trough moves out and a weak ridge develops. However, a smaller
second trough will slide into California Sunday into next
Monday. Temperatures will slightly drop due to this second
trough.
&&
AVIATION...
00Z Update:
VFR conditions will prevail across the central California interior
for the next 24 hours. Areas of low visibility in smoke will be
lingering across the Sierra Foothills in Madera/Fresno/Tulare
Counties through 18Z Tuesday, after which southwesterly flow
aloft will push much of the smoke upslope towards the Sierra
crest.
&&
.AIR QUALITY ISSUES...
Dense Smoke Advisory until 11 AM PDT Tuesday for
CAZ320-325>329.
&&
.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 Smoke Advisory until 11 AM PDT Tuesday for CAZ320-
325>329.
&&
$$
JPK/CM
weather.gov/hanford

NWS HNX Office Area Forecast Discussion