Marine Weather and Tide Forecast for Coronado, CA

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

This evening...a few showers are lingering, mostly over the mtns and desert slopes but they are quickly moving east and dissipating. Showers should end by midnight. Sfc pressure gradients are still onshore to the east and the low pressure system moving southeast into AZ continues to bring locally strong winds to the mtn passes and adjacent desert areas. In the last hour, the wind- prone locations have reported wind gusts as strong as 45-55 mph.

From previous discussion...
A large low pressure system over the Inter-Mountain West will continue the cool, cloudy and breezy conditions into early Saturday. Skies will at least partially clear tonight as a weak ridge starts to build in. Mostly clear skies with warmer high temperatures near normal for the coastal areas and up to 5 degrees below for inland areas follow Saturday. Seasonally average afternoon breezes are expected, with a stronger sea breeze than previous days. Some patchy low clouds will develop near the coast overnight Saturday into Sunday, but mostly clear skies will predominate for most areas.

Temperatures will continue to rise Sunday and Monday, and high temperatures will be near normal for coastal regions and about 5 degrees above average for inland areas by Monday. Coastal areas cool off slightly Tuesday, and the cooling trend spreads inland Wednesday through Friday, with overnight and morning low clouds and patchy fog that will gradually get slightly deeper and further inland towards mid-week. Afternoon high temperatures will be back to 5-10 degrees below average for this time of year by the late week.

Ensemble weather models are in good agreement through next Saturday, with differences in the placement of an upper low pressure after that. A minority of model outputs indicate precipitation around Sunday-Monday, while the majority keep us dry if cooler than average.

AVIATION
180340Z
Coasts/Valleys/Foothills
BKN-OVC cigs near 3000-4000 feet will continue this evening, beginning to scatter after 10Z tonight, especially at coastal TAF sites. Higher terrain continuing to be obscured in FG up to 8000 feet until 13-15Z Fri. Mostly clear conditions expected by later Friday morning into the afternoon. FEW- SCT clouds near 3,000 ft MSL possible near the coast Friday night.

Higher Mountains/Deserts...SCT-BKN clouds near 100K ft MSL through 08Z across the lower deserts, with clearing for all thereafter.
Westerly winds will continue to diminish through the evening, becoming lighter overnight. Winds shifting NE by 12Z Fri with gusts near 30kts at times along coastal slopes of Orange / SBD Counties until 21Z Fri.

MARINE
No hazardous marine conditions are expected through Tuesday.

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

SGX WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...None.