AVALANCHE WARNING
Warning Issue Date: 915 AM PST THU DEC 31 2009
AVALANCHE WARNING FOR THURSDAY AFTERNOON THROUGH FRIDAY MORNING...
A STRONG FRONT SPREADING NORTHWARD ACROSS THE MT HOOD AREA THURSDAY
MORNING WILL REACH THE NORTH CASCADES AND OLYMPICS THURSDAY
AFTERNOON. THIS FRONT WILL BRING HEAVY SNOW AND STRONG CREST LEVEL
WINDS ALONG WITH SIGNIFICANTLY RISING FREEZING LEVELS.
THIS STORM SHOULD DEPOSIT HEAVY ACCUMULATIONS OF INCREASINGLY DENSE
SNOW TO MOST AERAS LATER THURSDAY. THE NEW HEAVY SNOW WILL
LOAD EXISTING WEAK SNOW THAT IS POORLY BONDED TO AN ICE CRUST. THIS
SHOULD RESULT IN WIDESPREAD NATURAL AVALANCHES BY LATE THURSDAY AND
THURSDAY NIGHT. BACKCOUNTRY TRAVEL IN AVALANCHE TERRAIN IS NOT
RECOMMENDED BY LATE THURSDAY.
PLEASE VISIT NWAC.US FOR DETAILS. KRAMER
THIS STATEMENT WILL BE UPDATED AS CONDITIONS WARRANT. PLEASE VISIT
WWW.NWAC.US FOR DETAILS.
$$
BACKCOUNTRY TRAVELERS SHOULD BE AWARE THAT ELEVATION AND
GEOGRAPHIC DISTINCTIONS ARE APPROXIMATE AND THAT A TRANSITION
ZONE BETWEEN DANGERS EXISTS. REMEMBER THERE ARE AVALANCHE SAFE
AREAS IN THE MOUNTAINS DURING ALL LEVELS OF AVALANCHE DANGER.
CONTACT LOCAL AUTHORITIES IN YOUR AREA OF INTEREST FOR FURTHER
INFORMATION.
NWAC WEATHER DATA AND FORECASTS ARE ALSO AVAILABLE BY CALLING
206-526-6677 FOR WASHINGTON, 503-808-2400 FOR THE MT HOOD AREA,
OR BY VISITING OUR WEB SITE AT WWW.NWAC.US.
KRAMER/NORTHWEST WEATHER AND AVALANCHE CENTER
$$
WINTER STORM WARNING
Warning Issue Date: 515 AM PST THU DEC 31 2009
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM PST THIS
EVENING FOR THE NORTH AND CENTRAL OREGON CASCADES...
A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT UNTIL 9
PM PST THIS EVENING.
A STRONG PACIFIC STORM SYSTEM WILL APPROACH TODAY...WITH HEAVY
SNOW DEVELOPING IN THE MORNING. SNOW...HEAVY AT TIMES...WILL
CONTINUE INTO THIS EVENING.
* TIMING...SNOW WILL DEVELOP EARLY THIS MORNING...AND INCREASE IN
INTENSITY BY NOON. POCKETS OF FREEZING RAIN ARE ALSO POSSIBLE
THIS AFTERNOON AND EVENING.
* ACCUMULATIONS...1 TO 3 FEET ARE LIKELY ABOVE 5000 FEET...WITH 1
TO 2 FEET EXPECTED BELOW 5000 FEET. HIGHEST AMOUNTS SHOULD BE
SOUTH OF MOUNT HOOD.
* SNOW LEVELS...WILL START AROUND 2000 FEET IN THE MORNING...THEN
RISE DURING THE DAY...REACHING 5000 FEET IN THE NORTH AND 6000
FEET OVER LANE COUNTY BY LATE AFTERNOON.
* IMPACTS...EXPECT SIGNIFICANT TRAVEL DIFFICULTIES OVER THE
CASCADES TODAY AND TONIGHT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.
$$
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