133
FXUS01 KWBC 031934
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
333 PM EDT THU JUL 03 2008
VALID 00Z FRI JUL 04 2008 - 12Z SAT JUL 05 2008
AN UPPER LEVEL TROUGH WILL WORK ITS WAY INTO THE PACIFIC NORTHWEST
COAST OVER THE NEXT TWO DAYS...FORCING AND FLATTENING THE
HERETOFORE DOMINANT RIDGE TO THE EAST. SLIGHTLY COOLER
TEMPERATURES WILL BE THE RESULT ACROSS THE NORTHWEST BY SATURDAY
AS WELL AS A CHANCE OF PRECIPITATION ESPECIALLY ACROSS WASHINGTON
STATE. A COLD FRONT OVER THE PACIFIC OCEAN WILL REMAIN OFFSHORE
THROUGH NEARLY ALL OF THE PERIOD WITH RAIN CREEPING ONTO COASTAL
CANADA BY SATURDAY. ACROSS MONTANA...A COLD FRONT WILL FORM IN
CONJUNCTION WITH DEEPENING LOW PRESSURE IN ALBERTA AS A SLIGHTLY
COOLER PACIFIC AIRMASS WORKS ITS WAY EASTWARD. THE SOUTHWESTERN
STATES WILL REMAIN HOT AND MOSTLY DRY AS UPPER LEVEL HIGH PRESSURE
TRIES TO REMAIN IN TACT.
A COLD FRONT MOVING THROUGH THE NORTHEAST AND STRETCHED BACK TO
THE SOUTHERN PLAINS WILL STALL NEAR THE OHIO RIVER VALLEY INTO
COASTAL NEW ENGLAND FRIDAY INTO SATURDAY. MUCH OF THE FOCUS FOR
PRECIPITATION WILL BE NEAR AND JUST NORTH OF THIS BOUNDARY AS
SEVERAL WAVES OF ENERGY RIDE ALONG THE FRONT. A BROAD SWATH OF
MODERATE AMOUNTS OF RAIN IS POSSIBLE FROM ARKANSAS NORTHEASTWARD
INTO THE MID-ATLANTIC. HIGH PRESSURE WILL HOLD OVER MICHIGAN AND
ENSURE A DELIGHTFUL STRETCH OF WEATHER WITH NEAR NORMAL
TEMPERATURES AND COMFORTABLE LEVELS OF HUMIDITY FROM THE DAKOTAS
EASTWARD TO NORTHERN NEW ENGLAND.
SHOWERS AND THUNDERSTORMS WILL BE IN THE FORECAST FOR SOUTHERN
TEXAS THROUGH THE PERIOD AS AN UPPER LEVEL LOW SPINNING NEARBY
COUPLES WITH A MOIST SOUTHEASTERLY FLOW FROM THE GULF OF MEXICO.
FRACASSO
GRAPHICS AVAILABLE AT WWW.HPC.NCEP.NOAA.GOV
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