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Extended Forecast Discussion
 
(Caution: Version displayed is not the latest version. - Issued 1418Z Aug 26, 2014)
 
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Abbreviations and acronyms used in this product
 
Geographic Boundaries -  Map 1: Color  Black/White       Map 2: Color  Black/White


EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1018 AM EDT TUE AUG 26 2014

VALID 12Z FRI AUG 29 2014 - 12Z TUE SEP 02 2014


THE 00Z/26 ENSEMBLE MEANS FROM THE VARIOUS MODELING CENTERS
FORTUNATELY PAINT THE SAME SYNOPTIC PICTURE AT THE MEDIUM RANGE,
INSTILLING GREATER THAN AVERAGE CONFIDENCE WITH THE LARGER SCALE
FEATURES. THE 00Z/26 ECMWF CAME CLOSEST TO THE MEANS OF THE
OPERATIONAL MODELS, SO USED A LIBERAL PORTION OF ITS MASS FIELDS
IN THE MANUAL BLEND FOR FRONTS AND PRESSURES. THE MESSAGE IS
RISING HEIGHTS IN THE EAST--WITH A COMMENSURATE RETREAT OF THE
POLAR FRONT--AND A SOUTHWARD-FROM-NORMAL DISPLACED POLAR JET OVER
THE WEST. IN THE MIDDLE IS WHERE ALL THE MOISTURE CONVERGES, WITH
THE ECMWF SUGGESTING THAT SEVERAL INCHES OF RAINFALL ARE IN STORE
FROM THE CENTRAL GULF COAST TO THE UPPER MIDWEST DAYS 3 THROUGH 7.
LESSER AMOUNTS ARE ANTICIPATED IN THE WASHINGTON OLYMPICS AND
CASCADES, WITH NO SIGN OF A LINGERING MONSOON FOR THE FAR
SOUTHWEST.


CISCO