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Extended Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 1526Z Mar 24, 2015)
 
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Geographic Boundaries -  Map 1: Color  Black/White       Map 2: Color  Black/White


EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1126 AM EDT TUE MAR 24 2015

VALID 12Z FRI MAR 27 2015 - 12Z TUE MAR 31 2015


USED ABOUT TWO-PARTS ECENS MEAN TO ONE-PART NAEFS MEAN AS A
SYNOPTIC GUIDE THIS FORECAST PACKAGE. THE GLOBAL NUMERICAL MODELS
ARE WELL CLUSTERED EARLY IN THE PERIOD, SHOWING ANOTHER
WESTERN-RIDGE/EASTERN-TROUGH MERIDIONAL EPISODE. LATER IN THE
PERIOD, THE MSC MEMBERS AVERAGE MUCH SLOWER WITH THE ARRIVAL OF
THE NEXT SLUG OF ENERGY ONTO THE PACIFIC NORTHWEST COAST THAN THE
ECENS AND GEFS MEMBERS--HENCE THE WEIGHTING AWAY FROM THE NAEFS
MEAN. THE PATTERN IS NOT A PARTICULARLY WET ONE NATIONWIDE, WITH
THE MEAN RIDGE IN THE WEST THWARTING FOCUSED ONSHORE FLOW FROM THE
PACIFIC OCEAN, AND THE DEEP TROUGH IN THE EAST PUTTING THE LID ON
MOISTURE TRANSPORT FROM THE GULF OF MEXICO.