Prognostic Meteorological Discussion
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FXAK02 KWNH 011810
PMDAK

ALASKA EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
209 PM EDT FRI AUG 01 2014

VALID 12Z TUE AUG 05 2014 - 12Z SAT AUG 09 2014

THE AUGUST 1/00Z GEFS/ECENS MEANS WERE FOLLOWED THROUGH THE MEDIUM
RANGE ALASKAN FORECAST.

BEYOND DAY 6...THE DETERMINISTIC SOLUTIONS---TO A DEGREE---HOLD
FIRM WITH UPPER-LEVEL RIDGING ACROSS THE ARCTIC CIRCLE. AND
CONTINUE TO DEVELOP SUBTLE DIFFERENCES WITH THE STRUCTURE OF THE
UPPER-LEVEL TROUGH DEVELOPING ALONG THE DATELINE AND INTERACTING
WITH THIS DOWNSTREAM RIDGE ANCHORED INVOF THE PANHANDLE.

THOUGHT THE 1/12Z DETERMINISTIC GFS WAS A REASONABLE COMPROMISE
FOR SOME OF THE DETAILS INVOF THE SOUTHWEST GULF OF ALASKA AND
SOUTHEAST BERING SEA. ALTHOUGH THEY WERE NOT AVAILABLE FOR THE
GRIDDED DATA---NOR WERE THEY INCORPORATED IN THE DAY 4-TO-DAY 8
500MB AND SURFACE GRAPHICS...THIS SOLUTION DOES FIT THE PATTERN
AND THE LATEST FORECAST FOR A LARGE PORTION OF THE PACIFIC OCEAN.

VOJTESAK




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