EXCESSIVE RAINFALL DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
941 PM EDT TUE APR 19 2011
 
...VALID 03Z WED APR 20 2011 - 00Z THU APR 21 2011...
...REFERENCE AWIPS GRAPHIC UNDER...DAY 1 EXCESSIVE RAINFALL...

SLIGHT RISK OF RAINFALL EXCEEDING FFG TO THE RIGHT OF A LINE FROM
20 SW PRG 10 W OKK 20 NW FWA 20 SW JYM 15 WNW ADG ARB 10 S PTK
VLL MTC 10 ENE DET 10 NNW CXHA 15 ESE TTF 20 ENE TDZ 30 E TDZ
20 NW CLE 15 NNW CGF 25 NE CGF 10 NW HZY 10 NNE HZY 10 SSW ERI
15 SSE ERI 20 ENE GKJ 10 NE FKL 10 SSE FKL 15 SSW FKL BVI LBE
25 NW W99 25 S 48I 20 ESE HTS 30 NE LEX 25 SW FFT 15 SW FTK
20 S EHR 20 SSW HSB 15 SW MVN 20 SW ENL 20 W ENL 15 NW SLO
20 WSW 1H2 15 S MTO 20 SW PRG.
 
STRONG DYNAMICS AHEAD OF A MID/UPPER LEVEL TROF MAKING ITS WAY
ACROSS THE MID TO LOWER MS VALLEY SHOULD CONTINUE TO SUPPORT
CONVECTION ALONG AND TO THE EAST OF A COLD FRONT INTO THE NIGHT. 
THESE STRONG DYNAMICS...ALONG WITH ABOVE AVG PW VALUES THAT
CONTINUE TO BE ON THE ORDER OF 1 TO 2 STANDARDIZED ANAMOLIES ABOVE
NORMAL AHEAD OF THE FRONT...WL SUPPORT POTENTIAL FOR HEAVY RAINS
FROM PARTS OF THE MID MS VALLEY EASTWARD INTO THE OH VALLEY
BETWEEN NOW AND WEDNESDAY EVENING. ISOLATED SHRT TERM PCPN AMTS OF
1 TO 1.5"+ POSSIBLE FROM THE SERN GREAT LAKES INTO THE LOWER OH
VALLEY AND LOWER MS VALLEY.  IN AREAS OF TRAINING...SHRT TERM PCPN
AMTS OF 1-2"+ ARE POSSIBLE.

BANN
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