195
WGUS61 KPHI 131607
FFAPHI
URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1207 PM EDT WED AUG 13 2025
DEZ001-NJZ010-012-015>019-PAZ070-071-102-104-106-140415-
/O.NEW.KPHI.FA.A.0011.250813T1800Z-250814T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-SOMERSET-MIDDLESEX-MERCER-SALEM-GLOUCESTER-CAMDEN-
NORTHWESTERN BURLINGTON-DELAWARE-PHILADELPHIA-EASTERN CHESTER-
EASTERN MONTGOMERY-LOWER BUCKS-
INCLUDING THE CITIES OF MOUNT HOLLY, TRENTON, PENNSVILLE, KENNETT
SQUARE, MORRISVILLE, LANSDALE, MOORESTOWN, WEST CHESTER,
SOMERVILLE, CHERRY HILL, MEDIA, CAMDEN, NORRISTOWN, WILMINGTON,
DOYLESTOWN, PHILADELPHIA, GLASSBORO, AND NEW BRUNSWICK
1207 PM EDT WED AUG 13 2025
..FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT
* WHAT...FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL IS POSSIBLE.
* WHERE...PORTIONS OF NORTHERN DELAWARE, INCLUDING THE FOLLOWING
AREA, NEW CASTLE, NEW JERSEY, INCLUDING THE FOLLOWING AREAS,
CAMDEN, GLOUCESTER, MERCER, MIDDLESEX, NORTHWESTERN BURLINGTON,
SALEM AND SOMERSET, AND SOUTHEAST PENNSYLVANIA, INCLUDING THE
FOLLOWING AREAS, DELAWARE, EASTERN CHESTER, EASTERN MONTGOMERY,
LOWER BUCKS AND PHILADELPHIA.
* WHEN...THROUGH LATE TONIGHT.
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN AREAS.
* ADDITIONAL DETAILS...
- A HIGH PRECIPITABLE WATER AIRMASS IS MOVING OVER THE MID-
ATLANTIC AND WILL COMBINE WITH A FRONTAL SYSTEM TO PRODUCE
HIGHLY EFFICIENT SLOW MOVING SHOWERS AND THUNDERSTORMS. THESE
STORMS WILL HAVE THE POTENTIAL TO PRODUCE 1-3 INCHES OF
RAINFALL PER HOUR WHICH, OVER THE URBAN CORRIDOR, COULD
RESULT IN FLASH FLOODING ESPECIALLY OVER IMPERVIOUS SURFACES.
IF STORMS END UP BACK BUILDING, THE POTENTIAL EXISTS FOR UP
TO 6 INCHES OF STORM TOTAL RAINFALL OVER VERY ISOLATED AREAS.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
DEAL
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