Weather Service Report


326 
FXUS66 KHNX 252126
AFDHNX

Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
226 PM PDT Thu May 25 2017

.SYNOPSIS...
High pressure ridging will bring a warming trend with mostly dry
conditions through the holiday weekend. A slight chance of
afternoon thunderstorms for the Sierra Crest will be possible for
the next several days. 

&&

.DISCUSSION...
Very active pattern still in place over the northern hemispheric
pole with at least 7 longwave troughs around the globe. This very
active and busy pattern has been making for slow system
progression and even blocky regimes for the mid-latitudes. An
omega/rex type block will be developing over the west conus
allowing a very broad ridge to heat things up for the west over
the next several days. Would be wise to keep a cool beverage in
hand over the Memorial Day weekend across central California as
temperatures will be climbing from the lower to mid 80s on Friday
to the upper 90s for many areas by Monday. This warming will
increase chances for a few thunderstorms over the higher
elevations during the afternoon periods. 

With this holiday weekend and warming temperatures many people
will be venturing out to the outdoors for recreation. Some may opt
for cooling off in area rivers, however, keep in mind that water
temperatures range from the mid 40s to mid 50s and hypothermia
will be real possibility. River flows will also be higher due to
the snowmelt continuing. These conditions between the high flows
and cold water temperatures make for a dangerous recipe, especially
if your beverage of choice is of the alcoholic variety. Some parts
of area rivers have been closed, including the Kern and San
Joaquin Rivers. Be sure your recreation area is not closed before
heading out. Life vests should also be an important piece of
equipment worn when around the water. Drownings have already
unfortunately happened this season and our hope is to prevent any
more. Please use caution this weekend and stay safe.

Next week will continue to remain hot with temperatures by Tuesday
flirting with the century mark in locations around the San Joaquin
Valley and Kern County desert areas. A cooling trend will return
around Thursday into next weekend as a weak trough moves through 
northern California. 

&&

.AVIATION...
VFR conditions are expected across the central CA interior during 
the next 24 hours.

&&

.AIR QUALITY ISSUES...
On Thursday May 25 2017... Unhealthy for sensitive groups in
Fresno and Kern Counties.
Further information is available at Valleyair.org

&&

.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.php for additional information
an/or to provide feedback.

&&

.HNX Watches/Warnings/Advisories...
NONE.
&&

$$

public...Andersen
avn/fw...Bean
synopsis...Andersen

weather.gov/hanford

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Western Regional Climate Center, wrcc@dri.edu