WIND CHILL WATCH
Warning Issue Date: 321 AM MST SAT DEC 05 2009
...WIND CHILL WATCH IN EFFECT FROM THIS AFTERNOON THROUGH MONDAY
MORNING...
THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A WIND CHILL
WATCH...WHICH IS IN EFFECT FROM THIS AFTERNOON THROUGH MONDAY
MORNING.
PROLONGED NORTHERLY FLOW THAT BEGAN YESTERDAY WILL BRING ARCTIC
AIR INTO CENTRAL AND EASTERN IDAHO. THE NORTH WIND MAY BE STRONG
ENOUGH TO COMBINE WITH THIS COLD AIR AND PRODUCE EFFECTIVE CHILL
TEMPERATURES COLDER THAN TWENTY DEGREES BELOW ZERO.
EFFECTIVE CHILL TEMPERATURES COLDER THAN TWENTY DEGREES BELOW
ZERO CAN FREEZE EXPOSED FLESH WITHIN 30 MINUTES...RESULTING IN
SEVERE FROSTBITE.
AREAS OF WIDESPREAD...PROLONGED WIND CHILL COLDER THAN TWENTY
BELOW ZERO INCLUDE THE UPPER SNAKE HIGHLANDS...THE CARIBOU
HIGHLANDS...AND THE UPPER SNAKE RIVER PLAIN. THE BEAR LAKE
BASIN...WOOD RIVER VALLEY...EASTERN MAGIC VALLEY...AND SOUTHERN
SNAKE RIVER PLAIN WILL HAVE ONLY PORTIONS OF RESPECTIVE AREAS
EXPERIENCE WIND CHILL OF THAT MAGNITUDE.
TEMPERATURES WILL WARM AND WINDS SLACKEN MONDAY DURING THE LATE
MORNING...WITH MUCH SAFER CONDITIONS DEVELOPING BY NOON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WIND CHILL WATCH MEANS THE THERE IS THE POTENTIAL FOR A
COMBINATION OF VERY COLD AIR AND WIND TO CREATE DANGEROUSLY LOW
WIND CHILL VALUES. MONITOR THE LATEST FORECASTS AND WARNINGS FOR
UPDATES ON THIS SITUATION.
$$
MESSICK
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