Quantitative Precipitation Forecast
Issued by NWS

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FOUS30 KWBC 011856
QPFERD

EXCESSIVE RAINFALL DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
255 PM EDT MON SEP 01 2014

...VALID 18Z MON SEP 01 2014 - 00Z WED SEP 03 2014...
...REFERENCE AWIPS GRAPHIC UNDER...DAY 1 EXCESSIVE RAINFALL...


SLIGHT RISK OF RAINFALL EXCEEDING FFG TO THE RIGHT OF A LINE FROM
20 NNW HRO 20 SSW GMJ 10 NE TUL 30 WNW TUL 20 SE PNC 15 ENE PNC
25 E WLD 15 WNW CNU 50 SSE OJC 20 ESE DMO 30 ENE JEF 15 WNW SUS
10 SSW SUS 30 SSW SUS 35 ESE VIH 45 ESE TBN 20 NW UNO 20 NNW HRO.


THE COLD FRONT PUSHING THRU THIS REGION DURING THIS PERIOD WILL BE
THE FOCUS FOR ENHANCING AND ORGANIZED CONVECTION..WITH SOME HEAVY
TO POTENTIALLY EXCESSIVE RAINS MOST LIKELY FROM PARTS OF THE
SOUTHERN PLAINS INTO THE LOWER OH VALLEY.  LARGE SCALE LIFT
VICINITY OF THE FRONT WILL BE ENHANCED BEGINNING VERY EARLY IN THE
PERIOD BY H5 S/WV ENERGY NOW MOVING INTO THE CENTRAL HIGH
PLAINS..WITH THIS S/WV REACHING THE GREAT LAKES BY LATE IN THE
PERIOD.    SUSTAINED 30-40KTS OF SOUTHWESTERLY TO
WEST-SOUTHWESTERLY LOW LEVEL JET WILL BRING IN PERSISTENLY HIGH
MOISTURE..WITH PWS FORECAST TO POOL TO NEAR OR ABOVE 2 INCHES
VICINITY OF THE FRONT.  THE COMBINATION OF THIS LARGE SCALE LIFT
AND HIGH MOISTURE WILL SUPPORT THE IDEA OF ORGANIZED CONVECTION
WITH THE HEAVY RAINS.  THE DEEP LAYERED WEST-SOUTHWESTERLY FLOW
WILL POTENTIALLY LEAD TO SOME CELL TRAINING..ESPECIALLY INTO
TUESDAY MORNING..AND PARTICULARLY SO FROM PARTS OF NORTHEASTERN
OK/SOUTHEASTERN KS THRU THE MID MS AND INTO THE LOWER OH VALLEYS.
EXPECT SOME ISOLATED 1-2 INCH RAINFALL AMOUNTS IN AN HOUR OR SO
AND SOME ISOLATED AMOUNTS GREATER THAN 3 INCHES WITHIN THE THREAT
AREA..WHICH COULD LEAD TO SOME FLOODING PROBLEMS.  STUCK CLOSE TO
THE HIRES ARW..NMMB AND WRFNSSL QPFS..AS THEY WERE ALL IN VERY
GOOD AGREEMENT ON THIS FORECAST.

TERRY




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