COMPUTER WEATHER FORECAST MODELS CONTINUE TO INDICATE THE DEVELOPMENT
OF A VERY UNSEASONABLY STRONG AND COLD STORM SYSTEM IN THE WESTERN
UNITED STATES LATER TODAY AND TONIGHT. CONFIDENCE IS GROWING THAT
THIS SYSTEM WILL AFFECT SOUTHWESTERN CALIFORNIA LATER THIS WEEK.
THE STORM IS EXPECTED TO FORM IN BRITISH COLUMBIA LATER TODAY... THEN
TREK DOWN THROUGH THE PACIFIC NORTHWEST...ARRIVING IN NORTHERN
CALIFORNIA WEDNESDAY EVENING...AND IN SOUTHERN CALIFORNIA BY THURSDAY.
THIS STORM WILL BE PRECEDED BY A DEEP MARINE LAYER WHICH WILL LIKELY
CREATE WIDESPREAD DRIZZLE BOTH WEDNESDAY MORNING AND THURSDAY
MORNING. MEASURABLE LIGHT RAIN IS POSSIBLE DURING THE LATE NIGHT AND
MORNING HOURS...ESPECIALLY IN THE FOOTHILL AREAS OF LOS ANGELES
COUNTY. TEMPERATURES EVERYWHERE WILL BE 5 TO 10 DEGREES BELOW NORMAL
ON WEDNESDAY... WITH ADDITIONAL COOLING LIKELY ON THURSDAY.
AS THE UPPER LEVEL SYSTEM APPROACHES THE AREA THURSDAY...THE CHANCE
OF SHOWERS WILL INCREASE DURING THE DAY. THE STORM IS FORECAST TO
TRACK RIGHT OVER SOUTHERN CALIFORNIA THURSDAY NIGHT AND FRIDAY...
BRINING A GOOD CHANCE OF SHOWERS TO THE REGION.
THE COLD AIR ALOFT WILL CAUSE THE ATMOSPHERE TO DESTABILIZE ACROSS
THE AREA...BRINGING A CHANCE OF THUNDERSTORMS THURSDAY NIGHT AND
FRIDAY...SOME OF WHICH COULD PRODUCE SMALL HAIL. IN ADDITION... SNOW
LEVELS WILL LOWER TO 7000 FEET BY LATE THURSDAY...THEN COULD FALL TO
BETWEEN 6000 AND 6500 FEET THURSDAY NIGHT THROUGH FRIDAY
NIGHT...ALMOST UNPRECEDENTED FOR SEPTEMBER IN SOUTHERN CALIFORNIA.
HIGH TEMPERATURES THURSDAY AND FRIDAY IN COASTAL AND VALLEY AREAS MAY
REMAIN IN THE 60S...MORE TYPICAL OF JANUARY THAN SEPTEMBER...AND NEAR
RECORD LOW VALUES FOR SEPTEMBER.
This from Greta – thanks so much for the weather update – I’m so excited I can hardly stand it!!! Time to pull out those sweaters and pants!!! Don’t you love the past couple of days … perfect fall.
This from Greta - thanks so much for the weather update - I'm so excited I can hardly stand it!!! Time to pull out those sweaters and pants!!! Don't you love the past couple of days ... perfect fall.