WINTER STORM WARNING
Warning Issue Date: 955 AM PST SUN DEC 13 2009
WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 6 PM PST TUESDAY...
A WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON
TO 6 PM PST TUESDAY.
* TOTAL SNOWFALL ACCUMULATIONS OF 1 TO 3 FEET ARE ANTICIPATED
LATE THIS AFTERNOON THROUGH TUESDAY AFTERNOON.
* THE SNOW LEVEL WILL START OUT BELOW 1000 FEET TODAY AND RISE
TO AROUND 2000 FT TONIGHT. BY LATE TUESDAY AFTERNOON...THE
SNOW LEVEL WILL GENERALLY BE IN THE 3500 TO 4500 FOOT RANGE.
THE EXCEPTION WILL BE THE PASSES WHERE COLD...EASTERLY FLOW
WILL KEEP THE SNOW LEVEL AT THE SURFACE.
* GUSTY WINDS ARE EXPECTED ACROSS THOSE AREAS EXPOSED TO SOUTH
TO SOUTHWEST WINDS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING FOR HEAVY SNOW MEANS SIGNIFICANT SNOWFALL
IS OCCURRING OR IMMINENT. SIGNIFICANT AMOUNTS OF SNOW WILL MAKE
TRAVEL HAZARDOUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST...KEEP
FLASHLIGHTS...FOOD...WATER...AND BLANKETS IN YOUR VEHICLE IN CASE
OF AN EMERGENCY.
$$
AVALANCHE WARNING
Warning Issue Date: 1124 AM PST SUN DEC 13 2009
AVALANCHE WARNING MONDAY NIGHT AND TUESDAY...
COLD WEATHER THE PAST WEEK GENERALLY CREATED WEAK SURFACE SNOW
LAYERS. A FRONT SHOULD CAUSE INCREASING STRONG WINDS...INCREASING
MODERATE TO HEAVY SNOW AND WARMING TEMPERATURES MONDAY AFTERNOON AND
NIGHT. THIS SHOULD BUILD INCREASING DEEP UNSTABLE LAYERS ON SOME
SLOPES. NATURAL OR TRIGGERED AVALANCHES SHOULD BECOME LIKELY MONDAY
NIGHT AND TO PERSIST TUESDAY MORNING.
ANOTHER FRONT IS CURRENTLY EXPECTED TO CAUSE RENEWED HIGH AVALANCHE
DANGER TUESDAY AFTERNOON AND TUESDAY NIGHT.
THIS STATEMENT WILL BE UPDATED AS CONDITIONS WARRANT. PLEASE VISIT
WWW.NWAC.US FOR DETAILS.
$$
BACKCOUNTRY TRAVELERS SHOULD BE AWARE THAT ELEVATION AND
GEOGRAPHIC DISTINCTIONS ARE APPROXIMATE AND THAT A TRANSITION
ZONE BETWEEN DANGERS EXISTS. REMEMBER THERE ARE AVALANCHE SAFE
AREAS IN THE MOUNTAINS DURING ALL LEVELS OF AVALANCHE DANGER.
CONTACT LOCAL AUTHORITIES IN YOUR AREA OF INTEREST FOR FURTHER
INFORMATION.
NWAC WEATHER DATA AND FORECASTS ARE ALSO AVAILABLE BY CALLING
206-526-6677 FOR WASHINGTON, 503-808-2400 FOR THE MT HOOD AREA,
OR BY VISITING OUR WEB SITE AT WWW.NWAC.US.
FERBER/NORTHWEST WEATHER AND AVALANCHE CENTER
$$
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