SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
514 PM EDT FRI JUL 03 2009
 
VALID 00Z SAT JUL 04 2009 - 12Z SUN JUL 05 2009
 
FOR THE FOURTH OF JULY HOLIDAY WEEKEND...THE SOUTHEASTERN U.S.
REGION WILL CONTINUE TO EXPERIENCE HOT AND HUMID CONDITIONS.  A
STRONG UPPER LEVEL RIDGE AS WELL AS MOISTURE AVAILABILITY FROM THE
GULF OF MEXICO WILL REMAIN IN PLACE DURING THE SHORT RANGE
PERIOD...AND ANY SHOWERS OR THUNDERSTORMS WILL BE LIMITED FOR THE
AFTERNOON AND EVENING HOURS.  NORTHEASTERN AND MID-ATLANTIC STATES
WILL REMAIN RELATIVELY COOLER...WITH MAXIMUM TEMPERATURES HOLDING
IN THE 70S AND 80S.  RAIN SHOWERS AND THUNDERSTORMS WILL LIKELY
CONTINUE TO IMPACT THE NORTHERN PORTIONS OF THE NORTHEAST
THROUGHOUT SATURDAY NIGHT...BUT PRECIPITATION IS EXPECTED TO EXIT
THE AREA BY SUNDAY MORNING AS THE RELATED SURFACE LOW PRESSURE
CENTER DEPARTS NORTHWARD.

THE CENTRAL U.S. MAY EXPERIENCE A SLIGHT DROP IN TEMPERATURES AS A
COLD FRONT BEGINS TO SWEEP SOUTHWARD THROUGH THE REGION
SATURDAY...BRINGING RELIEF FROM THE 90 TO 100 DEGREE TEMPERATURES
IN THAT AREA. HOWEVER...THIS FRONTAL SYSTEM ALSO WILL USHER IN A
LARGE SWATH OF PRECIPITATION THROUGHOUT THE MIDWEST AND OHIO
VALLEY.  SOME REGIONS MAY EXPERIENCE HEAVY RAIN AND
THUNDERSTORMS...WHICH MAY RESULT IN FLOOD CONDITIONS. BY THE
LATTER PART OF THIS WEEKEND...RAIN AND THUNDERSTORMS ARE
ANTICIPATED TO SPREAD INTO THE MID-ATLANTIC AREA AS THE ASSOCIATED
FRONTAL SYSTEM CONTINUES TO PROGRESS EASTWARD.

ELSEWHERE...A SURGE OF UPPER-LEVEL ENERGY WILL APPROACH THE
PACIFIC NORTHWEST THROUGHOUT SUNDAY INTO MONDAY MORNING...AND MAY
BRING A RELATED COLD FRONT INTO THE REGION. PRECIPITATION
ASSOCIATED WITH THE SYSTEM IS EXPECTED TO BE MINIMAL DURING THE
SHORT TERM FORECAST PERIOD.

KOST


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