Scientific Forecaster Discussion
fxus66 ksgx 231245
Area forecast discussion
National Weather Service San Diego California
445 am PST Tue Jan 23 2018
dry and warmer weather will continue through Wednesday. There will
be periods of gusty Santa Ana winds with gusts mostly 45 mph or
less into Wednesday morning. 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 aloft near the West Coast and surface pressure over the
Great Basin will bring a greater warming trend. There will periods
of mostly weak and gusty Santa Ana winds near the coastal foothills
Discussion...for extreme southwestern California including Orange...
San Diego...western Riverside and southwestern San Bernardino
The only change through Wednesday is for slightly stronger Santa
Ana winds near the coastal foothills and below passes and canyons
into Wednesday morning with a Wind Advisory now in effect. Winds
are expected to be strongest through this afternoon...and again
for late tonight through mid morning Wednesday with gusts to 45
mph at times and isolated gusts to 55 mph in the San Diego County
mountains today and near the coastal foothills of the Santa Ana
Mountains this morning.
The low pressure system moving through California on Thursday is
expected to bring a return of coastal low clouds and fog for late
Wednesday night into Thursday morning with clouds spreading onto
the coastal slopes and into the mountains for Thursday afternoon
and evening. There will be stronger and gusty west winds in the
mountains...deserts...and across the coastal waters for Thursday
into Thursday evening. It will cooler for all areas. The passage
through far Southern California is expected to be mostly
dry...though it is possible a few sprinkles could occur...mostly
in the mountains.
Little change from the previous forecast for Friday through
Monday...except for offshore winds trending a little
weaker...mostly localized and a little weaker than the winds
expected for today and Wednesday. Minimal warming for
Friday...then greater warming for Saturday into Sunday and Monday.
Beyond any sprinkles that might occur on Thursday...dry weather
appears likely to continue into at least early February.
231045z...sky clear and unrestricted visibility today and tonight.
Isolated pockets of low level wind shear and moderate turbulence through and below
mountain passes and canyons and along the coastal slopes 12-22z
today. Also possible around kont and ksna 15-19z.
hazardous winds and seas are likely Thursday afternoon through
Thursday night. Otherwise, no hazardous marine conditions are
forecast through Saturday.
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.
California...Wind Advisory until 10 am PST Wednesday for Orange County inland
areas-Riverside County mountains-San Bernardino County
mountains-San Bernardino and Riverside County valleys-the
inland Empire-San Diego County mountains-San Diego County
valleys-San Gorgonio Pass near Banning-Santa Ana Mountains