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Alaska Extended Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 1801Z Feb 17, 2015)
 
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ALASKA EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
101 PM EST TUE FEB 17 2015

VALID 12Z SAT FEB 21 2015 - 12Z WED FEB 25 2015

NO MAJOR CHANGES PLANNED---WITH THE 17/00Z ECENS/NAEFS MAINTAINING
THE LONGWAVE TROUGH VERY CLOSE TO WHERE IT HAS BEEN FOR THE BETTER
PART OF A WEEK---AND THE UPPER LEVEL RIDGE BETWEEN 130W-140W. AND
FOR THE MOST PART---THE BROAD WARMING TREND ACROSS THE
INTERIOR---AND A SLIGHT WESTWARD PUSH OF COLDER AIR PERIODICALLY
INTO THE PANHANDLE---REMAINS IN PLAY FOR MOST OF THIS MEDIUM RANGE
PERIOD.

AS MENTIONED YESTERDAY...THE GUIDANCE SPREAD CONTINUES TO BE INVOF
NORTHEAST SIBERIA AND THE SOUTHEASTWARD PUSH OF A 'FRESH' ARCTIC
AIRMASS ACROSS THE BERING STRAIT AND INTO THE NORTHWEST COAST OF
THE STATE. THE CURRENT TEMPERATURES GRIDS (BLENDED MEANS) DID NOT
SUPPORT AN APPRECIABLE COOL DOWN (HIGH TEMPERATURES---MAYBE DOWN
2-3F) ALONG THE WEST COAST IN THE DAY 7-8 TIME FRAME. BUT
OVERALL...NOT MUCH CHANGE AND IF ANYTHING---A SLIGHT WARMING TREND
ALONG THE NORTH SLOPE.

VOJTESAK