Marine Weather and Tide Forecast for Encinitas, CA

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

Update...

Low clouds were only beginning to form along the San Diego County coast at mid-evening with clear skies elsewhere. With the clear skies there were some reports of Aurora borealis sightings in darker areas, including from the HPWREN webcam at Volcan Mountain (5300' MSL near Julian). Low clouds will be more sparse tonight, with patchy dense fog possible near the coast as well (around a 40 percent chance), especially if the marine inversion lowers overnight. Current ceiling at San Clemente Island is around 800 ft MSL, and coastal San Diego sites are showing few clouds around 1000 ft MSL. Anyway, Friday should be a warm day again with the cooling trend starting Saturday (especially west of the mountains), then dropping below average west of the mountains Sunday, with the cooling trend continuing through Wednesday when some light rain could fall (possibly even some drizzle earlier next week). Humidity will remain low inland Friday (minimums 10-20 percent from the valleys to the deserts, locally below 10 percent in the deserts) but recover to 20-30 percent for minimums in the valleys Saturday with steady increases in the following days.

From previous discussion...

Low clouds have cleared to the beaches today with temperatures eclipsing the century mark across the lower deserts. The marine layer will be somewhat similar in depth from earlier today, so patchy fog will once again be present for elevated areas away from the coast. An area of low pressure will push closer to the Northern California coast by Friday, leading to subtle increase in onshore flow and cooling across the deserts with similar temperatures elsewhere. Mid level clouds associated with this system currently situated across the Central Valley will come southward, bringing cloudier weather across our region by Friday afternoon. As the system pushes into Northern California, further cooling will occur across our entire region. By the weekend, chances remain moderate for valleys of Orange County to remain below 75 degrees and high chances for areas of the IE to stay below 85 degrees. The marine layer will also begin to deepen, filling in most coastal/valley locations in Orange and San Diego Counties each night.

Lower heights will continue to occur as a large trough off the Pacific looms by early next week. This will continue to bring a deeper marine layer, with temperatures slightly below average west of the mountains, near average in the mountains and slightly above average in the deserts. Confidence increases on timing of this system moving onto the West Coast around Wednesday, which will bring further cooling to the region by later next week. Confidence remains less on how deep this trough becomes, which may produce marine layer drizzle/light showers. Ensemble members from EPS/GEFS begin to show wet members by Wednesday through Friday, but NBM POPs look adequate for now with highest chances over the coastal waters.

AVIATION
110330Z
Coast
Mostly clear at this hour except for a small patch of low clouds vcnty KSAN. Bases are about 900 ft MSL with tops to 1500 ft MSL. Low clouds will increase in coverage tonight, with best chances for CIG impacts at coastal TAF sites 09Z-16Z. Low clouds and fog unlikely to spread more than a few miles inland, with VIS 1-3SM in fog on coastal mesas. Expect clearing to the beaches 15Z-17Z.

Inland...Mostly clear skies with unrestricted VIS through Friday.

MARINE
No hazardous marine conditions are expected through Sunday.

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



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