733
FXUS01 KWBC 260843
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
442 AM EDT TUE AUG 26 2008
VALID 12Z TUE AUG 26 2008 - 00Z THU AUG 28 2008
TROPICAL CYCLONES...THE REMNANTS OF FAY WILL CONTINUE TO YIELD
HEAVY TO MODERATE PRECIPITATION ACROSS THE SOUTHEAST WITH THE MOST
PRONOUNCED ACTIVITY ALONG THE APPALACHIANS. EVEN THOUGH THIS
SYSTEM HAS BEEN DOWN GRADED AND THE LOW LEVEL CIRCULATION HAS
BECOME MORE DIFFICULT TO PINPOINT...THE ENVIRONMENT IS MOISTURE
LADEN AND THE THREAT OF FLOODING WILL REMAIN A CONCERN OVER THE
NEXT 48 HRS. BY WEDNESDAY...THE REMAINS OF FAY WILL MOVE INTO THE
MID-ATLANTIC REGION BRINGING SOME MUCH NEEDED PRECIPITATION INTO
THE WASHINGTON D.C. METRO AREA. TROPICAL DEPRESSION JULIO WILL
CONTINUE ITS TREK NORTHWARD AND DECAY. THE MOISTURE FROM JULIO
WILL FUEL ENHANCE CONVECTION OVER MEXICO AND WILL CONTRIBUTE TO
MONSOONAL ACTIVITY OVER THE DESERT SOUTHWEST.
LOOKING WESTWARD...A POTENT PACIFIC LOW THAT IS CURRENTLY OVER THE
CANADIAN PRAIRIE AND SPANS BACK TO THE GREAT BASIN WILL CONTINUE
TO PUSH EASTWARD...USHERING COOLER TEMPERATURES INTO THE PACIFIC
NORTHWEST AND NORTHERN ROCKIES. MOST OF THE PRECIPITATION WILL
FALL NORTH OF THE U.S. CANADIAN BORDER...HOWEVER A NARROW SWATH OF
CONVECTION WILL MOVE ACROSS MONTANA ON TUESDAY AND INTO THE
DAKOTAS. FURTHER SOUTH ALONG THE FRONTAL BOUNDARY...LITTLE IS
EXPECTED IN THE WAY OF PRECIPITATION...HOWEVER...THE WINDS WILL
PICK UP A BIT A DIRECT RESULT OF THE PRESSURE GRADIENT FORCES. A
VERY DRY AIRMASS WILL FOLLOW IN THE WAKE OF THIS FRONT...WHICH
WILL HAVE IMPACTS ON THE FIRE WEATHER SITUATION ACROSS THE
NORTHWEST QUADRANT OF THE COUNTRY. NEXT...A SECOND PACIFIC SYSTEM
WILL REACH BRITISH COLUMBIA LATE TUESDAY COURTESY OF A VERY
PROGRESSIVE LONGWAVE PATTERN. ONCE AGAIN...THE LION'S SHARE OF THE
PRECIPITATION WILL FALL IN CANUCK TERRITORY...ALTHOUGH PORTIONS OF
WASHINGTON STATE AND IDAHO WILL SEE SCATTERED SHOWERS.
SZATANEK
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