Wildfire in California, July 18, 2016

AREA FORECAST DISCUSSION
National Weather Service San Diego CA
137 PM PDT MON JUL 18 2016

.SYNOPSIS...
High pressure aloft will strengthen over the central and southern
plains during the first part of this week, then expand westward
to center over California and Nevada by the weekend. This will
bring a warming trend to above normal temperatures, with the hottest
days inland on Friday and Saturday. Slightly cooler for Sunday
into early next week, but still well above normal. Areas of night
and morning low clouds and patchy fog will decrease in coverage
through the week, becoming mostly confined to the coast by late
in the week through next weekend. Otherwise, just a few mid and
high clouds and some afternoon clouds over the mountains at times
from monsoonal moisture to the east.

&&

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

Mostly clear skies prevail over the area this afternoon, with the
exception of a small patch of low clouds along the immediate coast
of southern San Diego County. The marine layer will gradually decrease in
depth from 1700 to 2000 feet today to around 1000 to 1200 feet by
late in the week through next weekend.

High pressure will strengthen over the central and southern
plains early this week and expand westward late in the week to
center over California and Nevada by early next week. This will
bring a warming trend with highest temperatures for inland areas
expected on Friday and Saturday. This will push high temperatures
to around 5 to locally 10 degrees above average, highest in
portions of the inland valleys. High temperatures are expected to
exceed 100 in the Inland Empire, 105 in the upper deserts, and
110 in the lower deserts. The marine layer and weak onshore flow
will keep coastal areas cooler with high temperatures around 80
near the coast. Above average high temperatures are expected to
continue into early next week, but slightly cooler than the
Friday/Saturday peak.

Any significant monsoonal moisture is expected to remain to the
southeast and east. A few mid and high clouds at times and a few
afternoon clouds near the mountains will continue through the
weekend.

&&

.AVIATION...
182015Z...Coast/Valleys...Except for patchy stratus near the beaches
of San Diego County, mostly clear skies with unrestricted vis will
prevail through this afternoon. Stratus will redevelop near the
coast 02Z-05Z and spread up to 25 mi inland by 12Z Tue with bases
1200-1500 ft MSL and tops to 1800 ft MSL, with local vis below 3
miles in some valley locations 09Z-14Z Tue. Most areas should clear
14-16Z Tue. Forecaster confidence is high.

Mountains/Deserts...Mostly clear with unrestricted vis through Tue.

&&

.MARINE...
West-northwest wind gusts around 20 kt will occur in the outer
waters during the afternoons and evenings Tue-Sat. Otherwise, no
hazardous marine weather is expected through Saturday.

&&

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

&&

.SGX Watches/Warnings/Advisories...
CA...None.
PZ...None.

&&

PUBLIC...TS
AVIATION/MARINE...Maxwell