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Alaska Extended Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 1623Z Oct 28, 2014)
 
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Abbreviations and acronyms used in this product
 
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ALASKA EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1223 PM EDT TUE OCT 28 2014

VALID 12Z SAT NOV 01 2014 - 12Z WED NOV 05 2014


OUT OF THE LAST THREE MAJOR MODEL CYCLES OF THE OPERATIONAL GFS
AND ECMWF, THE 12Z/27 ECMWF SEEMS TO SIDESTEP MOST OF THE OUTLYING
EXTREMES ACROSS THE ALASKA REGION AT THE MEDIUM RANGE--E.G. THE
BIG PANHANDLE LOW LATE IN THE PERIOD DEPICTED BY THE 00Z/28 ECMWF.
THE ONE REGION WHERE THE 12Z/27 ECMWF DIFFERED MEANINGFULLY FROM
CLIMATOLOGY AND ENSEMBLES WAS ACROSS EXTREME NORTHEASTERN RUSSIAN
AND THE NORTHERN BERING SEA WHERE IT LOWERED PRESSURES
PRECIPITOUSLY WITH THE INFLUX OF THE NEXT WAVE PACKET FROM THE
WESTERN PACIFIC. TO MITIGATE THE DIFFERENCE, SWITCHED TO THE MOST
RECENT EUROPEAN CENTRE ENSEMBLE MEAN BY LATE DAY 7 THROUGH DAY 8.


CISCO