Scientific Forecaster Discussion
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Area forecast discussion
National Weather Service San Diego California
800 am PST Mon Jan 22 2018
high pressure will bring a warming trend through Wednesday with
gusty northeast winds near the coastal foothills and high clouds at
times. A low pressure system moving inland through California on
Thursday will bring stronger onshore flow with cooling...gusty west
winds in the mountains and deserts...and more clouds. For Friday
through next weekend...stronger high pressure will bring a greater
warming trend with breezy Santa Ana winds at times.
Discussion...for extreme southwestern California including Orange...
San Diego...western Riverside and southwestern San Bernardino
No changes were made to the forecast this morning. Temperatures
starting off quite chilly but will quickly rebound to near normal
levels, or about 5 degrees warmer than on Sunday, with light
High pressure aloft and weak offshore flow will bring a warming
trend through Wednesday with gusty northeast winds near the coastal
foothills and below passes and canyons at times...with some high
clouds at times.
Long term (thursday through sunday)...
for Thursday...a fast moving low pressure system will move inland
through California. The model trend has been to be slightly
farther north...with the onshore flow across Southern California
not quite as strong. It will still bring cooling and more clouds.
But the gusty west winds in the mountains and deserts may not be
quite as strong. Chances for any precipitation continue to
decrease and precipitation may not extend much past Point
For Friday through next weekend...stronger high pressure aloft
will develop near the West Coast with surface high pressure over
the Great Basin will bring periods of weak to locally moderate
strength Santa Ana winds at times. Friday may be nearly as cool as
Thursday for some areas...especially for inland areas...with
greater warming for Saturday and Sunday.
221520z...p6sm vis continuing with scattered clouds at or above 20000 ft msl
gradually becoming sky clear through Tuesday morning.
no hazardous marine weather expected through Wednesday. A trough of
low pressure moving north of the region may bring strong northwest
winds and near 10 foot seas to the coastal waters late Thursday
through early Friday.
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.