000 FXUS66 KSTO 101838 CCA AFDSTO AREA FORECAST DISCUSSION - UPDATED NATIONAL WEATHER SERVICE SACRAMENTO CA 1030 AM PST TUE MAR 9 2010 .DISCUSSION... UPPER LEVEL RIDGING IS BEGINNING TO BUILD OVER THE AREA AS SHORTWAVE IS EXITING TO THE EAST. SKIES HAVE CLEARED OVER MOST OF THE NORTHERN AND CENTRAL VALLEY WITH STRATOCUMULUS CLOUDS DEVELOPING OVER THE SOUTHERN SACRAMENTO AND NORTHERN SAN JOAQUIN VALLEYS. SNOW OVER THE NORTHERN SIERRA HAS RAPIDLY DIMINISHED WITH JUST SOME ISOLATED LIGHT SNOW SHOWERS NEAR THE CREST POSSIBLE. THESE SHOULD END BY LATE MORNING. THE WINTER WEATHER ADVISORY HAS BEEN CANCELLED FOR THE MOTHERLODE AND NORTHERN SIERRA. THE STORM WAS FAST MOVING...BUT MANAGED TO DROP SNOW AMOUNTS OF 2 TO 10 INCHES OF SNOW AT AREA SKI RESORTS. THE COLD AIRMASS BROUGHT LOW SNOW LEVELS...WITH ACCUMULATING SNOW DOWN INTO THE FOOTHILLS. GRASS VALLEY RECEIVED AROUND 1 TO 3 INCHES...WITH ABOUT AN INCH IN NEVADA CITY. WEATHER SPOTTERS REPORTED ABOUT AN INCH IN PARADISE AND 4 INCHES IN FORESTHILL. THERE WAS ABOUT 5 INCHES MEASURED NEAR SHINGLETOWN...AND 2 INCHES IN BURNEY. TEMPERATURES WILL WARM INTO THE MID 50S UP TO 60S. MOSTLY CLEAR SKIES AND CALM WINDS WILL ALLOW TEMPERATURES TO DROP ENOUGH FOR FROST IN SOME LOCATIONS IN THE VALLEY. WILL UPDATE FORECAST TO REMOVE MENTION OF ADVISORY AND REMOVE AFTERNOON PRECIPITATION. EK .EXTENDED DISCUSSION (SUNDAY THROUGH WEDNESDAY)... THE EARLY PORTIONS OF THE EXTENDED PERIOD WILL BE DOMINATED BY A BUILDING RIDGE OF HIGH PRESSURE OVER THE SOUTHWESTERN US. WITH THIS DRY PATTERN AND WARMING AIRMASS...WILL LIKELY SEE WIDESPREAD 70S ALONG THE VALLEY FLOOR FOR THE FIRST TIME THIS SEASON ON MONDAY IF NOT BY SUNDAY. UPPER 60S TO NEAR 70 WILL ALSO BE POSSIBLE FOR FOOTHILL LOCATIONS WITH 50S AND 60S FOR THE HIGHER ELEVATIONS. WARMER THAN NORMAL CONDITIONS SHOULD CONTINUE FOR MOST LOCATIONS THROUGH WEDNESDAY. MEDIUM RANGE MODELS HINT AT A PACIFIC SYSTEM PERHAPS BRINGING LIGHT PRECIPITATION TO AREAS NORTH OF INTERSTATE 80 DURING THE MIDDLE OF NEXT WEEK. DANG && .AVIATION... VFR/MVFR CONDITIONS WITH NORTHWESTERLY WINDS AS A RIDGE OF HIGH PRESSURE BUILDS OVER THE AREA TODAY INTO EARLY THURSDAY EXCEPT LOCAL IFR CONDITIONS ALONG THE EAST SIDE OF THE VALLEY AND IN THE ADJACENT FOOTHILLS UNTIL 20Z. && .STO WATCHES/WARNINGS/ADVISORIES...NONE. && $$
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