Prognostic Meteorological Discussion
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000
FXUS01 KWBC 302027
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
426 PM EDT SUN AUG 30 2015

VALID 00Z MON AUG 31 2015 - 00Z WED SEP 02 2015

...HEAVY RAIN POSSIBLE OVER PARTS OF THE PACIFIC NORTHWEST...

...HEAVY RAIN POSSIBLE OVER PARTS OF THE SOUTHEAST COAST...

SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE SOUTHEAST AS WARM
MOIST AIR STREAMS IN UNDER AN UPPER-LEVEL DISTURBANCE. MORE
WIDESPREAD CONVECTION WITH HIGHER INTENSITY WILL FOCUS AROUND
COASTAL AREAS; PRIMARILY ALONG SOUTH CAROLINA, GEORGIA AND SOUTH
FLORIDA. FLASH FLOODING MAY OCCUR IN THESE AREAS THROUGH EARLY
TUESDAY MORNING.

AN EXPANSIVE FRONTAL SYSTEM; DRAPED FROM QUEBEC TO MANITOBA, SOUTH
THROUGH THE NORTHERN PLAINS AND INTO THE GREAT BASIN, WILL
GENERATE SCATTERED SHOWERS AND THUNDERSTORM THROUGH TUESDAY
EVENING FOR MUCH OF THE DESERT SOUTHWEST, CENTRAL AND NORTHERN
PLAINS, SOUTHERN CANADA AND WESTERN GREAT LAKES REGION. A FEW
ISOLATED AREAS MAY HAVE HIGHER RAINFALL INTENSITIES, HOWEVER,
EXCESSIVE AMOUNTS NOR FLASH FLOODING IS EXPECTED WITH THIS SYSTEM.

A STRONG TROUGH OFF THE PACIFIC NORTHWEST COAST WILL KEEP MUCH OF
PACIFIC NORTHWEST COAST IN A WET PATTERN THROUGH TUESDAY EVENING.
AREAS OF HEAVY RAIN WILL ALIGN ALONG THE COAST OVER THE NEXT FEW
DAYS. TEMPERATURES ASSOCIATED WITH THIS FEATURE WILL BE CLOSER TO
A FALL PATTERN. ISOLATED SNOW SHOWERS WILL BE POSSIBLE FOR AREAS
OF HIGHER TERRAIN IN BRITISH COLUMBIA; OTHERWISE, RAIN SHOWERS AND
STEADY RAIN IS EXPECTED.

MONSOONAL MOISTURE AND DAYTIME HEATING WILL AID IN PRODUCING
SHOWERS AND THUNDERSTORMS OVER PART OF THE SOUTHERN/CENTRAL
ROCKIES AND PARTS OF THE SOUTHWEST/GREAT BASIN OVER THE NEXT
COUPLE OF DAYS.


CAMPBELL


GRAPHICS AVAILABLE AT WWW.WPC.NCEP.NOAA.GOV
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