Scientific Forecaster Discussion
Southwest California area forecast discussion...updated
National Weather Service Los Angeles/Oxnard California
614 PM PST Tuesday Dec 10 2013
Updated aviation section
Weak offshore flow will continue to generate offshore breezes
through Thursday...especially for Ventura and la counties.
Temperatures will warm a couple degrees each day before a slight
cooling trend Friday. Warmer weather on tap for the weekend as high
pressure and weak offshore flow return.
Short term (today-fri)...quiet period of weather next several days
with no precipitation expected through at least the middle of next week.
Lingering offshore flow will generate sub-advisory level northeast
winds across the area through Thursday before gradients briefly turn
weakly onshore Friday as a weak trough passes through the West Coast.
Daytime highs will warm a couple degrees each day before leveling
off or even cooling a couple degrees Friday with the onshore trends
and trough passage. The European model (ecmwf) solution is cooler with the trough
evolving into a semi cutoff upper low just west of the coastline Thursday
and Friday. But still dry so the only potential impact to the forecast
would be cooler highs Friday than what we have going currently.
Overnight temperatures will remain chilly, especially in wind protected
locations. Tonight should be the last night of widespread
sub-freezing temperatures for the central coast and southern sba County
but pockets of 32 or below likely to continue through the end of the
week even for portions of la/Ventura valleys as well.
Long term (sat-tue)...a warming trend through early next week as
high pressure builds aloft and weak offshore flow returns. Could be
looking at highs near or just above 80 by sun and/or Monday for valleys
and middle to upper 70s for southern coastal areas.
VFR conditions are expected throughout the period. There is a slight
chance of moderate low-level wind shear at terminals south of Point
Klax...VFR conditions are expected throughout the period. Any east
winds will remain less than 5 knots.
Kbur...VFR conditions are expected throughout the period. No wind
issues are expected at this time.
frost advisory (see laxnpwlox).