Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

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FXUS66 KHNX 162030

Area Forecast Discussion
National Weather Service Hanford CA
130 PM PDT Sun May 16 2021

Low pressure will bring showers and thunderstorms over the Sierra
and Indian Wells Valley this afternoon. As the low moves east
into the Four Corners region on Monday, left over moisture over
the Sierra will allow for some additional afternoon showers and
thunderstorms. Temperatures will warm Monday and Tuesday as high
pressure becomes reestablished over the West. Another trough of
low pressure will bring cooling temperatures beginning Wednesday
with below normal values expected later in the week.


The upper low is centered over the desert just east of Kern County
this afternoon and is continuing to move eastward. Showers and
thunderstorms have developed over the Sierra as expected today and
will likely move into the Indian Wells Valley and possibly the
foothills as well this afternoon. This convective activity will
end this evening, then develop over the Sierra again Monday
afternoon as we continue to have some moisture wrapping around the
low as it moves to near the Four Corners area.

As the low moves east, a shortwave ridge will move back into
California and allow temperatures to warm to slightly above normal
again Monday and Tuesday. The warming trend will be short-lived.
Wednesday will mark the beginning of another cool down as a
trough of low pressure pushes into the Pacific Northwest and then
on Thursday and Friday a robust area of low pressure moves into
the north state and Great Basin. There will be some snow showers
possible in the Sierra, mainly north of Kings Canyon Thursday and
Friday. Otherwise, the Central California Interior will remain
dry, with cooler than normal temperatures expected through
Saturday, then near normal again next Sunday.


VFR conditions will prevail in Central California through at
least the next 24 hours. Local MVFR conditions in the Sierra
Nevada due to showers and thunderstorms through 05Z Monday.





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 for additional information
an/or to provide feedback.




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