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Area Forecast Discussion (AFD)

Issued by San Joaquin Valley, CA (HNX)

FXUS66 KHNX 181026

Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
326 AM PDT Mon Jun 18 2018

Weak system will continue moving through the region keeping
temperatures below normal and bringing breezy to gusty afternoon
and evening winds to the Kern County mountain/desert areas and
coastal pass locations. High pressure will begin moving into the
region later this week and will bring a return to above normal
temperatures and continued dry conditions.


Yesterday temperatures were kept well below normal thanks to a 
trough moving through the region and some mid-level marine induced
clouds helping to keep solar insolation to a minimum yesterday
across the SJV. Normal highs are in the lower 90s and yesterday we
only managed to get to a high of 78 at both FAT and BFL. Today
cloud cover will be greatly reduced and will allow temperatures to
get closer to the normal levels. Breezy to gusty winds will be
possible for the Kern County mountain/desert areas and the coastal
pass areas on the western side of the SJV due to weak marine

As we get to the middle of the week, high pressure will begin
moving into the region late Tuesday and by Wednesday temperatures
will once again approach the century mark. This ridging will
dominate the area well into the weekend and at this time Saturday
looks to be the hottest day. There is a bit of uncertainty later
in the weekend with a few weak shortwaves progged to move through
northern California. However with this broad ridging my
inclination is to lean more to the ridge winning out and keeping
temperatures hotter. However, if clouds are increased due to the
shortwave passages, then all bets are off and temperatures could
easily be cooler by 5-8 degrees. This would be the only fly in the
ointment so to speak with the forecast, otherwise every thing else
looks to be on track. It will be interesting to see what happens
next week as there is an active pattern well to the north of us
and any of those systems could meander southward and give us a
cool down. This has been the pattern lately and would not be
surprised to see this happen. Heck, who would of thunk we would
have upper 70s in the second week of June around here? Believe me
I am not looking a gift horse in the mouth, and will definitely
take as much of this as I can get. Remember, with the return to
hot temperatures later this week to keep in mind cold water
safety, with hot air temperatures and still fairly cold river
waters, shock can easily set in and increase chances of drowning.
So be sure to wear a life vest if seeking refreshment in local


VFR conditions will prevail across the Central CA interior during 
the next 24 hours.





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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