Area forecast discussion
National Weather Service San Diego California
355 am PDT sun may 19 2013
Synopsis...
high pressure off the California coast will bring warming and drying
through Monday with a shallower marine layer for Monday. Surface
high pressure will bring locally gusty north winds near the coastal
foothills Monday. For Tuesday through Thursday...another trough of
low pressure will move inland along the West Coast bringing
cooling...a deeper marine layer...and gusty west winds in the
mountains and deserts. Slow warming for next weekend as the trough
of low pressure weakens.
&&
Discussion...for extreme southwestern California including Orange...
San Diego...western Riverside and southwestern San Bernardino
counties...
Through Monday...high pressure over the eastern Pacific west of
California and Baja California will bring warming with surface high pressure
over the Great Basin bringing locally gusty north to northeast winds
near the coastal foothills Monday with strongest gusts to around 40
miles per hour along the coastal slopes of the San Bernardino County mountains.
Satellite imagery shows areas of low clouds over the inner coastal
waters extending inland across Orange County and the coast and
valleys of San Diego County. Patchy stratus is expected for the
inland Empire this morning. A somewhat shallower marine layer is
expected for tonight and Monday...but still sufficient for stratus
to reach the western valleys. For early this morning...onshore flow
will bring locally gust winds to around 40 miles per hour in the northern
Coachella Valley.
For Tuesday through Thursday...another trough of low pressure will
move inland along the West Coast bringing cooling...higher
humidities...a deeper marine layer...and gusty west winds in the
mountains and deserts. Slow warming for next weekend as the trough
of low pressure weakens.
&&
Aviation...
190930z...coast/valleys...patchy stratus...with bases 1400-2000 feet
mean sea level and tops near 2700 feet mean sea level...will continue to develop along the
coast and around 20 sm inland this morning. Visible at or below 1 sm will be
possible where stratus meets higher terrain. Stratus will clear
towards the coast around 17 UTC this morning...then redevelop along
the coast between 04-09 UTC tonight with similar tops and bases.
Mtns/deserts...unrestricted visible and sky clear through Monday morning.
&&
Marine...
a long-period SW swell will arrive today and continue through
midweek...creating elevated surf and strong rip currents along
southerly facing beaches. Always swim near a lifeguard.
&&
Sgx watches/warnings/advisories...
California...none.
Pz...none.
&&
$$
Public...17
aviation/marine...jjt
