Sunrise 6:06 AM   Sunset 7:30 PM Moonrise 9:37 PM   Moonset 6:54 AM

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PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 156 Pm Pdt Thu Apr 25 2024
.small craft advisory in effect from Friday afternoon through Saturday morning - .
Tonight - Wind west 10 knots. Gusts to 15 knots this evening. Wind waves around 3 feet this evening - .becoming 2 feet or less. SWell west 2 to 4 feet at 6 seconds. A slight chance of rain after midnight. Friday - Wind west 10 to 15 knots - .becoming 10 to 20 knots in the afternoon. Gusts to 25 knots. Wind waves around 3 feet - . Building to 4 to 6 feet in the afternoon. SWell west 4 to 6 feet at 8 seconds. A chance of rain in the morning. Friday night - Wind west 15 to 25 knots with gusts to 30 knots. Combined seas 8 to 10 feet dominant period 8 seconds - .building to 9 to 12 feet dominant period 9 seconds after midnight. A slight chance of rain in the evening. Saturday - Wind west 10 to 15 knots with gusts to 20 knots. Wind waves around 2 feet or less. SWell west 5 to 7 feet at 9 seconds.Saturday night - Wind west 10 knots - .becoming south after midnight. Wind waves around 2 feet or less. SWell west 3 to 5 feet at 8 seconds. Sunday - Wind variable less than 10 knots - .becoming west 10 knots in the afternoon. Wind waves around 2 feet or less. SWell west 3 to 4 feet. Sunday night - Wind west 10 knots in the evening - .becoming variable less than 10 knots. Wind waves around 2 feet or less. SWell west 2 to 4 feet. Monday - Wind variable less than 10 knots - .becoming southwest 10 knots in the afternoon. Wind waves around 2 feet or less. SWell west 3 to 4 feet at 8 seconds. Monday night - Wind variable less than 10 knots. Wind waves around 2 feet or less. SWell west 2 to 3 feet at 10 seconds. Tuesday - Wind variable less than 10 knots - .becoming southwest 10 knots in the afternoon. Wind waves around 2 feet or less. SWell west 2 to 3 feet at 10 seconds. Tuesday night - Wind variable less than 10 knots. Wind waves around 2 feet or less. SWell west 2 to 3 feet at 10 seconds.

PZZ700 156 Pm Pdt Thu Apr 25 2024
Synopsis for the far southern california coast - At 2 am, a 1031 mb high was 500 nm west of point conception and a 1008 mb low was over las vegas. Onshore flow will increase tonight and peak Friday through early Saturday, when stronger winds and higher seas will generate hazardous boating conditions Friday through early Saturday, especially beyond 15 nm offshore. A few gales are possible Friday night near san clemente island. Weaker onshore flow and an occasional eddy circulation will follow Saturday through Monday.

FXUS66 KSGX 252051 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 151 PM PDT Thu Apr 25 2024

SYNOPSIS
Gusty westerly winds; periods of drizzle or light rain west of the mountains; and cooler conditions are expected through Friday. A deep marine layer will result in night and morning low clouds throughout much of the coastal basin through Friday. The marine layer will become shallower into the weekend. A gradual warming is expected over the weekend into early next week.

DISCUSSION
FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...

Visible satellite at 130 PM this afternoon was showing widespread cloud coverage across the coastal basin. Clear skies were prevailing in the mountains and deserts. The marine layer will remain deep into Friday as a low pressure system digs south into the Great Basin.
This will keep the atmosphere unsettled, with periods of passing shortwaves moving through the mean flow ahead of the core of the system. The passing shortwaves are expected to generate areas of scattered light showers or drizzle as they interact with deep marine layer moisture tonight into early Friday morning. As the core of the low digs into the Great Basin Friday afternoon and evening, periods of light showers are expected to develop. Coast and valley areas in San Diego county as well as the coastal mountain slopes are the most likely places to see a shower. Most areas will see 0.05 inches of rain or less, but a few locations may accumulate up to 0.15 inches if showers train across that particular area. 0.10 to 0.35 inches of rain are possible in the mountain foothills. Light snow accumulations are possible above 7000 ft Friday evening.

Periods of gusty westerly winds will continue over the mountains and into the deserts through Friday night. Peak gusts for this afternoon into early Friday morning will be mostly 50 to 60 mph on the desert mountain slopes. Gusts 40 to 50 mph possible in the deserts. Local gusts up to 70 mph possible through the San Gorgonio Pass near Whitewater. Gusty winds will continue for Friday afternoon into early Saturday. There is a potential for more widespread coverage of stronger wind gusts on Friday as a low pressure system moves into the Great Basin and east into the Four Corners region. Peak Gusts of 50 to 65 mph are expected on the desert mountain slopes. Gusts in the deserts will peak at 40 to 50 mph. There will also be the potential for gusts 70 to 75 mph in wind prone locations like through the San Gorgonio Pass.

Widespread below average high temperatures are expected tomorrow and Saturday. By Sunday, highs will warm to near average, with some locations still a degree or two cooler than average for this time of year. Further warming is expected into early next week. By the middle of next week, some uncertainty develops in the upper level pattern, with some ensemble solutions showing troughing while others maintain a weak ridge. This introduces uncertainty into the temperature forecast, with the potential for cooler conditions to return. This uncertainty also impacts the depth of the marine layer.
Current forecast follows NBM with a few degrees of cooling on Thursday with a shallower marine layer for early next week, slowly deepening into the middle to end of next week.

AVIATION
252000Z
Coast/Valleys/Foothills
BKN-OVC low clouds based from 3500-4500 feet MSL and tops to 6000 feet will continue, along with scattered -DZ or -SHRA dropping cigs to 2500 feet and vis to 3-5SM with higher terrain obscured. Cloud bases BKN-OVC lowering down to near 2500-3500 feet MSL along with some obscuration of higher terrain overnight into Friday.

Mountain Ridges/Deserts...Areas of west winds with surface gusts 25- 55 kt today and tonight. Occasional LLWS and rotors near lee slopes and adjacent deserts, such as vcnty KPSP, along with MOD to STG up/downdrafts. Areas of reduced vis 2-5SM in BLDU in deserts.

MARINE
Stronger winds and higher seas will generate hazardous boating conditions Friday through early Saturday, especially beyond 15 NM offshore. A few gales are possible Friday night near San Clemente Island. The Small Craft Advisory contains the details. Otherwise, no hazardous marine conditions are expected.

SKYWARN
Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.



SGX WATCHES/WARNINGS/ADVISORIES
CA...Wind Advisory until 11 PM PDT Friday for Apple and Lucerne Valleys-Coachella Valley-Riverside County Mountains-San Bernardino County Mountains-San Diego County Deserts-San Diego County Mountains-San Gorgonio Pass Near Banning.

PZ...Small Craft Advisory from 1 PM Friday to 7 AM PDT Saturday for Coastal Waters from San Mateo Point to the Mexican Border and out to 30 nm.

Small Craft Advisory from 3 AM Friday to 11 AM PDT Saturday for Waters from San Mateo Point to the Mexican Border Extending 30 to 60 nm out including San Clemente Island.

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San Clemente
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Thu -- 04:52 AM PDT     -0.45 feet Low Tide
Thu -- 06:07 AM PDT     Sunrise
Thu -- 06:54 AM PDT     Moonset
Thu -- 11:03 AM PDT     3.42 feet High Tide
Thu -- 03:59 PM PDT     1.59 feet Low Tide
Thu -- 07:29 PM PDT     Sunset
Thu -- 09:35 PM PDT     Moonrise
Thu -- 10:15 PM PDT     5.47 feet High Tide
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San Clemente, California, Tide feet

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