SPECIAL WEATHER STATEMENT
Issue Date: 450 AM PST SAT DEC 5 2009
Expiration: 500 PM PST SAT DEC 05 2009
...ACTIVE WEATHER PATTERN LIKELY THROUGH NEXT WEEK...
A CHANGE IN THE WEATHER PATTERN BEGINS TODAY WITH A STRENGTHENING
PACIFIC JET STREAM BRINGING A SERIES OF STORM SYSTEMS INTO
CALIFORNIA AND NEVADA.
THE FIRST SYSTEM WILL BE ACCOMPANIED BY A COLD AIR MASS...BRINGING
SNOW TO EASTERN CALIFORNIA AND WESTERN NEVADA FROM SUNDAY NIGHT
THROUGH MONDAY. MODERATE SNOW ACCUMULATIONS ARE POSSIBLE ACROSS
THE EASTERN SIERRA AND PORTIONS OF WESTERN NEVADA WHICH COULD
PRODUCE DIFFICULT DRIVING CONDITIONS FOR THE MONDAY MORNING
COMMUTE. A WINTER STORM WATCH HAS BEEN ISSUED FOR PORTIONS OF
EASTERN CA AND WESTERN NV. SEE RNOWSWREV FOR ADDITIONAL DETAILS.
A VERY COLD AIR MASS WILL MOVE INTO THE AREA MONDAY INTO TUESDAY
WITH HIGH TEMPERATURES STRUGGLING TO REACH FREEZING EVERYWHERE.
LOW TEMPERATURES TUESDAY MORNING HAVE THE POTENTIAL TO BE QUITE
COLD...TEN DEGREES BELOW ZERO UP TO 15 DEGREES ABOVE ZERO. THESE
WELL BELOW NORMAL TEMPERATURES MAY CONTINUE INTO WEDNESDAY.
A SECOND STORM IS POSSIBLE LATE WEDNESDAY INTO FRIDAY. THIS
SYSTEM WILL BE WARMER THAN THE FIRST...BUT WITH PLENTY OF COLD AIR
TRAPPED IN THE VALLEYS...THE STORM WILL BEGIN AS SNOW...POSSIBLY
CHANGING OVER TO RAIN BELOW 5500 FEET LATE IN THE EVENT.
SIGNIFICANT PRECIPITATION AMOUNTS ARE POSSIBLE WITH THIS STORM.
WITH BOTH SYSTEMS...WINDS WILL INCREASE AND BECOME STRONG
ESPECIALLY ON THE SIERRA RIDGES.
LOCAL OFFICIALS...EMERGENCY MANAGERS AND ANYONE WITH TRAVEL PLANS
THIS UPCOMING WEEK SHOULD CONTINUE TO MONITOR THE FORECASTS AND
FURTHER STATEMENTS FOR BOTH THESE STORMS.
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