DAY 1 EXCESSIVE RAINFALL THREAT AREA NWS WEATHER PREDICTION CENTER COLLEGE PARK MD 154 AM EDT TUE MAY 21 2013 ...VALID 06Z TUE MAY 21 2013 - 12Z WED MAY 22 2013... SLIGHT RISK OF RAINFALL EXCEEDING FFG TO THE RIGHT OF A LINE FROM 10 NNW ADH 30 WNW UNO 15 ENE BLV 10 S OLY 20 ESE PAH AWM 25 NNE BQP 25 NE GGG 15 NNW TKI 10 NNW ADH.