Thursday, November 26, 2009

LAKE TAHOE TO GET AN UNEXPECTED SNOW STORM FOR THANKSGIVING WEEKEND!


MODELS HAVE CHANGED SIGNIFICANTLY OVER THE LAST 24 HOURS REGARDING

THE SHORTWAVE THAT AFFECTS THE WEST COAST LATE TONIGHT AND FRIDAY.

SOUTHWEST FLOW ALOFT IS STILL PROGGED TO SLOWLY INCREASE TODAY

WITH ENOUGH LOW LEVEL MIXING FOR MANY VALLEY LOCATIONS TO MIX OUT

AND GET CLOSE TO 60 DEGREES. SURFACE WINDS WILL CONTINUE TO BE

VERY LIGHT HOWEVER RIDGES AND FOOTHILLS WILL SEE INCREASING

SOUTHWEST WINDS LATE IN THE DAY AHEAD OF THE APPROACHING UPPER

TROUGH.


THIS SOLUTION IS MUCH MORE

FAVORABLE FOR PRECIP WITH BETTER UPPER DYNAMICS INCLUDING GOOD

DEFORMATION AHEAD OF THE LOW AND ALSO THE SLOWER MOVEMENT MAKING

FOR A LONGER PRECIP EVENT. THIS IS ALSO AN EVENT WITH VERY LITTLE

RAIN SHADOW WHERE WRN NEVADA COULD GET NEARLY AS MUCH PRECIP AS

THE SIERRA. THE LOW SLOWLY MOVES SOUTH ALONG THE SIERRA FRIDAY

NIGHT UNTIL SHOWERS FINALLY MOVE SOUTH OF THE CWA ON SATURDAY.

TOTAL MODEL QPF HAS BEEN STEADILY INCREASING WITH ROUGHLY 0.75"

NOW ALONG THE SIERRA CREST NORTH OF LAKE TAHOE...AND NEARLY 0.5"

EXTENDING JUST EAST OF RENO ALONG INTERSTATE 80. SNOW LEVELS DROP

THROUGHOUT THE DAY FRIDAY WITH SNOW EXPECTED ON MOST VALLEY FLOORS

BY FRIDAY EVENING. CONTINUED TO RAISE POPS AND QPF

Bring It, Happy Turkey Day!

No comments:

Post a Comment