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Area Forecast Discussion (AFD)

Issued by San Joaquin Valley, CA (HNX)

                            
000
FXUS66 KHNX 252233
AFDHNX

Area Forecast Discussion
National Weather Service Hanford CA
333 PM PDT Tue Jun 25 2019

.UPDATE...
Updated AIR QUALITY ISSUES section.

&&

.SYNOPSIS...
A low pressure system over the Pacific Northwest will bring a
cooling trend the next couple of days with temperatures falling
to well below normal by Thursday. Winds will be breezy to windy
through the end of the week. Temperatures will gradually trend
warmer over the weekend and back to near normal early next week.

&&

.DISCUSSION...Visible satellite imagery is showing sunny skies 
prevailing across the central California interior with just a few
thin cirrus clouds passing by. An upper low is spinning off the
Pacific Northwest coast as high pressure is losing it's grip over
the southwest CONUS. A resultant cooling trend has begun with 
24hr trends showing temperatures across the San Joaquin Valley 
running down 2-5 degrees from this time yesterday. Highs are on
track to top out a few degrees above climatological averages.
Winds are increasing across the Kern County Mountains and will
become windy through and just below the passes until the end of 
the week. 

The upper low will drift eastward during the next 48 hours and 
cross over the PacNW coast by Thursday. A noticeable cooling 
trend will occur with temperatures falling to around 10 degrees 
below normal by Thursday. Highs in the SJV are forecast to be in 
the 80s on Thursday and Friday. After little change on Friday, a 
gradual warming trend will occur over the weekend and into next 
week as the upper low lifts out and high pressure tries to build
back over the southwest. Temperatures are expected to climb back
to near normal by early next week. Dry weather will prevail for
at least the next seven days.

&&

.AVIATION...
VFR conditions will prevail at MCE, MER, FAT, VIS, and BFL through
at least the next 24 hours. 

&&

.AIR QUALITY ISSUES...
None.

&&

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
an/or to provide feedback.

&&

.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
an/or to provide feedback.

&&

.HNX WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

public...DCH
aviation....DCH

weather.gov/hanford