Preliminary Forecasts
Issued by NWS

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FXUS02 KWNH 290444
PREEPD

PRELIMINARY EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1243 AM EDT SAT AUG 29 2015

VALID 12Z TUE SEP 01 2015 - 12Z SAT SEP 05 2015


RELIANCE ON THE ENSEMBLE GUIDANCE CONTINUES TO SIDESTEP SOME OF
THE MORE TROUBLESOME ASPECTS OF DETERMINISTIC SOLUTIONS ACROSS THE
UNITED STATES AT THE MEDIUM RANGE--ERIKA, THE COMPLEX TROUGH
PUSHING THROUGH THE NORTHWEST. THE FOCUS FOR PRECIPITATION THIS
PERIOD WILL BE OVER THE NORTHWESTERN AND SOUTHEASTERN CORNERS OF
THE NATION. THE DEEP, EARLY-AUTUMN TROUGH IN THE NORTHWEST NEXT
TUESDAY AND WEDNESDAY IS STILL EXPECTED TO BRING SIGNIFICANT
RAINFALL TO THE OLYMPICS AND CASCADES OF WASHINGTON, WITH SNOW IN
THE HIGH CASCADES. ERIKA AND THE ATTENDANT SLUG OF TROPICAL
MOISTURE DRIFTING INTO THE SOUTHEAST SHOULD KEEP THAT REGION
SHOWERY INTO NEXT WEEKEND. IN THE SOUTHWEST, THE MONSOON SHOULD
WANE WITH TIME WITH THE TROUGH CROSSING THE NORTHERN ROCKIES. THE
UPPER MIDWEST LOOKS SHOWERY ALONG THE POLAR FRONT AT THE LEADING
EDGE OF THE WESTERN TROUGH.


CISCO

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