438
FXUS01 KWBC 312040
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
440 PM EDT SUN AUG 31 2008
VALID 00Z MON SEP 01 2008 - 12Z TUE SEP 02 2008
HURRICANE GUSTAV IS CURRENTLY THE MAJOR WEATHER STORY OVER THE
LOWER 48 DURING THE SHORT TERM PERIOD. THE HURRICANE IS CURRENTLY
FORECAST TO STEADILY PROGRESS NORTHWESTWARD FROM THE CENTRAL GULF
OF MEXICO AND MAKE LANDFALL SOMEWHERE ACROSS THE CENTRAL LOUISIANA
COAST LATE TOMORROW MORNING. SPIRAL RAIN BANDS WILL CONTINUE TO
IMPACT AN INCREASING AMOUNT OF REAL ESTATE ALONG THE GULF COAST AS
THE HURRICANE APPROACHES... AND SOLID AREAS OF MODERATE TO HEAVY
RAIN WILL ENTER LOUISIANA TONIGHT ALONG WITH INCREASING WINDS. THE
HEAVIEST RAINFALL TOTALS ARE FORECAST OVER LOUISIANA WHERE
WIDESPREAD AMOUNTS OF UP TO A FOOT OF RAIN ARE POSSIBLE WITH
LOCALLY HIGHER AMOUNTS BEFORE THE STORM EXITS THE REGION.
SCATTERED SHOWERS AND THUNDERSTORMS ONGOING OVER THE SOUTHEAST
INTO THE MID ATLANTIC REGION ARE FORECAST TO LARGELY DISSIPATE
TONIGHT EXCEPT FOR THE EASTERN SLOPES OF THE CENTRAL AND SOUTHERN
APPALACHIANS WHERE A STEADY EASTERLY FETCH OF MOISTURE OFF THE
ATLANTIC WILL PROMOTE UPSLOPE ENHANCEMENT ACROSS THE TERRAIN.
FARTHER NORTH INTO THE NORTHEAST AND OHIO VALLEY.. HIGH PRESSURE
WILL DOMINATE INTO WEDNESDAY ALONG WITH COMFORTABLY WARM
TEMPERATURES AND LOW HUMIDITY AS THE REGION IS SANDWICHED BETWEEN
TWO FRONTAL SYSTEMS... ONE OVER THE ATLANTIC AND THE OTHER OVER
THE PLAINS.
THE COLD FRONT OVER THE PLAINS IS ASSOCIATED WITH A SHARP DROP OFF
IN TEMPERATURE WHERE LOCATIONS IN THE 90S TODAY ACROSS THE
NORTHERN PLAINS WILL SEE HIGH TEMPERATURES ONLY IN THE 60S FOR
TUESDAY. COLD AIR WILL ALSO IMPACT THE HIGHER TERRAIN OF IDAHO AND
WESTERN WYOMING WHERE A LITTLE BIT OF SNOW IS LIKELY LATE TONIGHT
INTO THE DAY FOR LABOR DAY. BY TUESDAY EVENING... THE COLD FRONT
IS FORECAST TO EXTEND FROM THE UPPER GREAT LAKES DOWN INTO THE
SOUTHERN PLAINS AND INTO NEW MEXICO. ELSEWHERE OVER THE WEST...
STEADY RAIN WILL FALL WITH WESTWARD FACING SLOPES RECEIVING THE
GREATEST RAINFALL TOTALS DUE TO UPSLOPE FLOW. OVER THE SOUTHERN
ROCKIES... MOISTURE AND INSTABILITY WILL LEAD TO WIDESPREAD
SHOWERS AND THUNDERSTORMS UNTIL THE PREVIOUSLY MENTIONED COLD
FRONT SWEEPS THROUGH MONDAY NIGHT INTO TUESDAY.
OTTO
GRAPHICS AVAILABLE AT WWW.HPC.NCEP.NOAA.GOV
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