Cool and windy this weekend with chances of light precipitation, mainly over and west of the mountains. Warmer early next week, then minor cooling and a slight chance of precipitation towards the middle of the week. Warmer and drier for the end of the week.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
Evening update, Scattered showers continue to move across the area this evening as an upper level short wave begins to move inland over So Cal. Rainfall rates will generally be 0.10" per hour or less tonight, locally up to 0.25" per hour in heavier showers. So far totals have been less than 0.10" for the coastal areas to the mountains, except on the coastal slopes of the San Bernardino Mountains where around 0.25-0.50" have been reported. Otherwise gusty southwest to west winds continue tonight in the mountains and deserts with gusts of 45-55 mph. A Wind Advisory remains in effect for the deserts through 11 AM Sunday.
A brief lull in the precipitation occurs Sunday afternoon before a second short waves moves in Sunday night, bringing another round of isolated to scattered showers into Monday morning. The greatest coverage will be across San Diego County with this wave. Snow levels near 6500-7000 ft this evening will fall to 5500-6000 ft by Sunday morning. 1-3" of snow accumulation is possible above 6500 ft. Sunday will remain cool with high temperatures anywhere from 10 to 20 degrees below normal inland.
Previous discussion, Cool and breezy conditions will continue for Monday and Tuesday with little if any chance for precipitation after Monday morning. Temperatures on Monday will remain well below average but Tuesday will be warmer, with temperatures near average.
Another low pressure system could bring chances for precip again for late Wed into Thu as another low pressure system moves in from the west. The timing and trajectory of this system is still uncertain due to spread among model solutions but most likely, we will see more cool and cloudy weather.
Dry and warmer weather returns for the end of next week as the low moves inland and weak high pressure ridging develops over the west coast.
260600z, Multiple cloud decks, SCT-BKN 2200-5000ft for coastal and inland areas and SCT-OVC 20,000-25,000ft MSL across the entire region. Pockets of -SHRA continue to move through the coastal basin region through the overnight hours, becoming less numerous from northwest to southeast 12-16z Sunday. Precipitation becomes largely VCSH after 16z, but remains possible through the end of the period. Light rain is also reaching the mountains with intermittent SHSN above 6000-6500 ft MSL. Mtns shrouded in FG; vis 0-5SM in FG/SHSN. Winds have largely relaxed west of the mountains this evening, but periodic wind gusts above 20kts remain possible for desert mountain slopes into the desert through the overnight hours. Gusts pick back up to 20-30 kts into the deserts by 18z Sunday, with gusts 15-20 kts returning to the coastal basin after 18z as well. Mod to strong up/downdrafts near peaks and on desert slopes tonight and Sunday. Periodic reduced VIS due to BLDU.
Gusty west winds close to 18-20 kts expected intermittently through late Sunday morning which may be hazardous to small craft. Otherwise, no hazardous marine conditions are expected through Wednesday.
Ca, Wind Advisory until 11 AM PDT Sunday for Apple and Lucerne Valleys-Coachella Valley-San Diego County Deserts-San Gorgonio Pass near Banning.
PZ, None.
