Coastal weather is significantly influenced by the marine layer, a cool, moist air mass that forms over the ocean and extends inland, creating cooler coastal temperatures (upper 50s to middle 60s) compared to inland areas (lower 80s to lower 90s). Diurnally driven onshore winds develop each afternoon and evening as the land heats up, drawing marine air inland. The marine layer's depth and stability determine coastal conditions, with deeper layers (up to 1500 ft) potentially bringing late evening or early morning coastal drizzle. Large-scale atmospheric patterns, such as troughs and ridges, control these wind patterns and temperature distributions across coastal regions.
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Cloudy coast for the holiday weekendAdded:
WATERS COVERING THE STREETS.
A FALLEN TREE WAS BLOCKED PART OF A HIGHWAY.
NO ONE WAS HURT.
CHIEF METEOROLOGIST GINA DEVECCHIO IS HERE NOW... DIURNALLY DRIVEN ONSHORE WINDS DURING THE AFTERNOON AND EARLY EVENING WARM AND DRY WEATHER THROUGH FRIDAY LEADS TO ELEVATED FIRE WEATHER CONCERNS FOR THE INTERIOR CENTRAL COAST GRADUAL COOLING TREND BEGINS FRIDAY WITH SEASONAL TEMPERATURES FOR THE UPCOMING WEEKEND TODAY WE CONTINUE TO SEE DRY CONDITIONS ACROSS THE INTERIOR AND WITH AFTERNOON MAXIMUM TEMPERATURES REACHING THE LOWER 80S TO LOWER 90S UNDER SUNNY SKIES. MEANWHILE, THE COAST WILL STAY COOLER THANKS THE ñ1000 FT MARINE LAYER WHERE WE ARE EXPECTING THE UPPER 50S TO MIDDLE 60S. WITH THE LARGE SCALE PATTERN ALOFT IS DEFINED BY A THROUGH OVER THE NORTHERN ROCKY MOUNTAINS AND A BUILDING RIDGE OVER THE NORTHEASTERN PACIFIC.
THIS PATTERN LARGELY SUPPORTS ONSHORE WINDS AT THE SURFACE WITH COASTAL BREEZES DEVELOPING EACH AFTERNOON AND EVENING.
TONIGHT, EXPECT THE MARINE LAYER TO REMAIN STEADY, YET THE INLAND EXTEND IS LIKELY TO INCREASE INTO THE COASTAL ADJACENT VALLEYS EARLY FRIDAY MORNING.
HOWEVER, SIMILAR TO TODAY, THESE LOW CLOUDS WILL QUICKLY RETREAT TO THE COASTLINE BY LATE MORNING.
FRIDAY WE ARE EXPECTING A SLIGHT COOL DOWN IN AFTERNOON TEMPERATURES AS THE TROUGH SHIFTS EASTWARD ALLOWING FOR A DEEPER MARINE LAYER TO RETURN.
COASTAL AREAS ARE LIKELY TO REMAIN IN THE UPPER 50S TO MIDDLE 60S WITH THE INTERIOR WARMING INTO THE UPPER 70S TO MIDDLE 80S. THE ONLY FAR INTERIOR AREAS LIKE PINNACLES NATIONAL PARK, KING CITY, SAN LUCAS, AND SAN ARDO HAVE THE POTENTIAL TO REACH 90 DEG F.
THE COOLING TREND WILL CONTINUE INTO THIS UPCOMING WEEKEND WITH TEMPERATURES RETURNING TO NEAR SEASONAL AVERAGES.
THIS IS AS THE MARINE LAYER IS FORECAST TO DEEPEN TO ñ1500 FT. CANNOT RULE OUT LATE EVENING AND EARLY MORNING COASTAL DRIZZLE DURING THIS TIMEFRAME AS THE BOUNDARY LAYER REMAINS VERY MOIST.
BY LATE MONDAY AND EARLY TUESDAY, A FRONTAL BOUNDARY IS FORECAST TO SWEEP ACROSS THE REGION.
THIS WOULD BRING THE POTENTIAL FOR DRIZZLE AND/OR LIG
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