tweet_text: MPD 0263 N &amp; E-CNTRL #VIRGINIA, #DC, #MARYLAND, #DELAWARE FLASH FLOODING POSS VALID TIL 0400 PM EDT COMBO OF DEEP TROPICAL MOISTURE, SURFACE FRONTAL BOUNDARY, &amp; LOW-LEVEL CIRCULATION WILL SUPPORT LOCALIZED AREAS OF FLASH FLOODING INTO THE AFTERNOON. #WRN