Thursday, February 24, 2011

update on winter advisories

It appears the National Weather Service was off on their timing. Now the Winter Storm Warning and the Winter Weather Advisory go into effect beginning at 4am tomorrow. More details from the NWS:

WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY
ABOVE 2000 FEET...
...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM FRIDAY TO 4 AM PST
SATURDAY BELOW 2000 FEET...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS ISSUED A WINTER
WEATHER ADVISORY BELOW 2000 FEET FOR SNOW...WHICH IS IN EFFECT
FROM 4 AM FRIDAY TO 4 AM PST SATURDAY. A WINTER STORM WARNING
ABOVE 2000 FEET REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY.

* SNOW ACCUMULATIONS: 2 TO 5 INCHES BETWEEN 1000 AND 2000 FEET
BETWEEN FRIDAY AND SATURDAY MORNINGS. SNOW ACCUMULATIONS OF A
FOOT OR MORE BETWEEN 2000 AND 3000 FEET THROUGH SATURDAY
MORNING.

* ELEVATION: SNOW LEVELS 2000 FEET TONIGHT DROPPING TO BELOW 1500
FEET ON FRIDAY AND TO OR BELOW 1000 FEET ON FRIDAY NIGHT.

* TIMING: PRECIPITATION WILL CONTINUE THROUGH SATURDAY MORNING.

* LOCATIONS INCLUDE: GRASS VALLEY...JACKSON AND SONORA

* WINDS: SOUTHERLY 10 TO 20 MPH.

* IMPACTS: SIGNIFICANT SNOWFALL ACCUMULATIONS POSSIBLE AT
UNUSUALLY LOW ELEVATION. HAZARDOUS TRAVEL CONDITIONS
POSSIBLE. POSSIBLE POWER OUTAGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.

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