Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA
FXUS66 KHNX 262233
Area Forecast Discussion
National Weather Service San Joaquin Valley - Hanford CA
333 PM PDT TUE JUL 26 2016
A ridge of high pressure will provide the Central California
Interior with mostly clear skies and above average temperatures
through the week. Isolated afternoon showers and thunderstorms
possible along the Sierra crest by Wednesday, possibly spreading
into the Kern County mountains and desert by the weekend.
Things have been status quo for the last week or so however a
bit of change is on the way. No, temperatures will not be cooling
significantly, but a few influxes of northerly moving moisture
will increase clouds over the Kern County desert and mountain
areas and over the sierra crest. Flat cumulus has already
developed in some of these areas today and shall increase for the
remainder of the week. The areas that receive increased cloud
cover will see slightly cooler temperatures due to the decrease in
solar insolation but otherwise the high pressure sitting over the
southwest will continue to spin over the four corners region
keeping temperatures above normal.
Small impulses of moisture will move northward around the
western periphery of the high. This will create breaks in the
activity. The increased moisture and increased diurnal upslope
winds over the crests will increase the chances of thunderstorms
developing over the crest areas. If any storms do develop, they
will be of the pulse variety, however an isolated stronger cell
would not be out of the question. Main impacts from storms would
be small hail, lightning, and brief heavy downpours. Hikers and
campers in the mountains should stay vigilant and stay weather
Winds will also be breezy and locally gusty through the passes and
wind favored canyons at times over the next several evenings as
gradient winds develop with high pressure to the east and weak
troughing to the north and west. With weak troughing passing
fairly close to the region beginning Monday, temperatures will
slightly decrease to around normal. It appears there is a
possibility of the beginning of a more substantial sub tropical
moisture influx to the region as well around the Monday to
Tuesday timeframe ahead of the northern stream trough and the high
pressure further east allowing a better conveyor belt of moisture
to develop. This will need to be monitored closely.
VFR conditions can be expected through Central California for at
least the next 24 hours.
.AIR QUALITY ISSUES...
On Tuesday July 26 2016... Unhealthy in Fresno County and Sequoia
National Park and Forest. Unhealthy for sensitive groups in
Kern... Kings... Madera... Merced and Tulare Counties.
Further information is available at Valleyair.org
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.php for additional information
an/or to provide feedback.