Marine Weather and Tide Forecast for Lake Forest, CA

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

.SHORT TERM (Today through Wednesday)...
Temperatures will remain above average for this week through will moderate slightly with high temperatures for inland areas around 5 to 10 degrees above average today and around 5 degrees above average for the latter half of the week. High temperatures for today will range from the mid 70s to lower 80s near the coast to the mid 90s to 105 for the Inland Empire with 112 to 116 for the lower deserts. Night and morning low clouds will spread into coastal areas and occasionally the far western valleys late each night.

.LONG TERM (Thursday through Sunday)...
There may be some influx of monsoonal moisture in easterly flow aloft into the mountains and deserts for Thursday through next weekend. High temperatures will change little or may decrease slightly in the lower deserts depending on the amount of any moisture influx. Low temperatures will warm slightly.

High temperatures for Thursday through Saturday will generally range from a few degrees above average near the coast to 4 to 8 degrees above average for inland areas. High temperatures will range from the mid 70s to lower 80s near the coast to the 90s to 104 for the Inland Empire with 108 to 114 for the lower deserts.

Chances for measurable rainfall each afternoon for the mountains from showers or thunderstorms mostly less than 15 percent.

AVIATION
010600Z
Coasts/Valleys
Low clouds based 1000-1400 ft MSL are increasing in coverage in the coastal areas at this hour. KSAN and KCRQ are already experiencing CIG impacts and KSNA will likely soon see CIG impacts. Low clouds could spread up to 15 miles inland by sunrise. Patches of fog could restrict VIS to 2-5 miles on higher coastal terrain. Low clouds and fog will begin to clear from inland areas 15-16Z then from the coast 16-17Z. Similar based clouds will develop and move inland again after 02-03Z Tue.

Mountains/Deserts...Expect mostly clear skies with unrestricted VIS.

MARINE
No hazardous marine conditions are expected through Thursday.

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



SGX WATCHES/WARNINGS/ADVISORIES
CA...Extreme Heat Warning until 8 PM PDT Monday for Riverside County Mountains-San Bernardino and Riverside County Valleys-The Inland Empire-San Diego County Mountains.

Heat Advisory until 8 PM PDT Monday for San Bernardino County Mountains.

Extreme Heat Warning from 10 AM Monday to 8 PM PDT Wednesday for Apple and Lucerne Valleys.

Extreme Heat Warning until 8 PM PDT Tuesday for Coachella Valley- San Diego County Deserts-San Gorgonio Pass near Banning.

PZ...None.