Scientific Forecaster Discussion
fxus66 ksgx 242105
Area forecast discussion
National Weather Service San Diego California
205 PM PDT Mon Jun 24 2019
an upper level trough will persist along the U.S. West Coast
through week's end. Dry weather will continue with slight cooling
occurring through Wednesday, followed by slight warming late in
the week and further inland warming early next week as an upper
level ridge builds nudges in from the east.
Discussion...for extreme southwestern California including Orange...
San Diego...western Riverside and southwestern San Bernardino
* typical June pattern persists this week
* dry conditions continue with warming late week-early next week
Marine layer cloudiness has cleared over the inland valleys.
However, clouds continue to stick to the coast. Some beaches will
manage to clear late this afternoon while others remain stuck in
the clouds. This pattern will continue over the next few days with
some slight cooling taking place. Tomorrow we will see a batch of
mid level cloudiness stream in from the southwest over socal as
some moisture caught up in the southwest upper flow moves by, but
no rainfall is expected.
An upper low off British Columbia will move south then eventually
east over the Pacific northwest. This will maintain a large scale
trough pattern along the U.S. West Coast. However, across socal
heights will slowly build, leading to slow warming late this week.
An upper ridge will build over the Desert Southwest early next
week and will nudge westward into our area. However, the degree of
warming is uncertain as we will be on the edge of some shortwave
troughing over the eastern Pacific. Indications are that heat will
build inland early next week. Whether or not it gets to excessive
levels inland will be dependent on the Desert Ridge placement and
strength. Ensembles favor keeping the heat in check, but we'll be
watching the trends.
242000z...coast/valleys...stratus, with bases 1200-2200 ft mean sea level and
tops to 2700 ft msl, will hover along portions of the coast today,
then redevelop and push inland this evening and overnight. Stratus
tops and bases will lower 200-400 ft from heights this afternoon,
and inland areas with higher terrain will have lowered visible of 3-5 sm
br overnight. Low clouds will begin to clear in the valleys towards
the coast late Tuesday morning.
Mountains/deserts...clear with unrestricted visible through Tuesday.
no hazardous marine conditions are expected through Saturday.
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.