EXCESSIVE RAINFALL DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
255 AM EDT TUE APR 19 2011
 
...VALID 06Z TUE APR 19 2011 - 12Z WED APR 20 2011...
...REFERENCE AWIPS GRAPHIC UNDER...DAY 1 EXCESSIVE RAINFALL...
 

SLIGHT RISK OF RAINFALL EXCEEDING FFG TO THE RIGHT OF A LINE FROM
20 SSW ASW 25 E ASW 20 WNW DFI TOL 10 SE TDZ 35 ESE TDZ
20 NW MFD MNN 20 NNW OSU 10 SSW SGH HAO 30 SE BAK 25 NE HNB EVV
10 WSW CUL 20 SSW MVN 20 SW ENL 20 W ENL 15 NW SLO 20 WSW 1H2
15 S MTO 10 SW PRG 25 SE DNV 20 SSW ASW.

 
THERE IS SOME CONCERN FOR FLOODING PROBS ACRS PTNS OF THE OH VLY
THIS PD..WITH ORGANIZED OVRRNG CNVCTN MOVG THRU THE REGION RMNDR
OF MON NGT INTO TUE MRNG..BRF ANOTHER ROUND OF SIGNIFICANT CNVCTN
MOVS IN TUE NGT.  STRENGTHENING LLJ/WAA IS SUPPORTING THE ONGOING
OVRRNG CNVCTN..WITH SOME ISOLD 1-2 INCH RNFL AMTS PSBL PTNS OF SRN
IL INTO CNTRL/SRN IN AND WRN OH INTO THE TUE MRNG HRS.  LTR TUE
AFTN AND ESP TUE NGT..SRN STREAM H5 S/WV AND ACOMPANYING SFC LOW
AND CDFNT WL BE PROGRESSING THRU THE OH VLY..ACCOMPANIED BY MORE
ORGANIZED CNVCTN..WITH LRG SCALE LIFT AIDED ADDITIONALLY BY A
FAVORABLE COUPLED UPR JET STRUCTURE.  WITH THIS 2ND ROUND OF
CNVCTN..THERE IS THE POTNL FOR ANOTHER 1-2 INCHES OF RAIN IN LCL
AREAS..LEADING TO PSBLTY THAT BTWN THE 2 RNFL EVENTS..SOME PTNS OF
THE OH VLY WITHIN THE SLGT RISK AREA COULD SEE 2-3+ INCHES OF
RAIN..WHICH COULD LEAD TO SOME FLOODING PROBS.

TERRY
$$