508
WGUS61 KPHI 210707
FFAPHI
FLOOD WATCH
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
307 AM EDT TUE JUL 21 2026
DEZ001-NJZ008>010-012>015-017>019-PAZ070-071-101>106-212100-
/O.CON.KPHI.FA.A.0005.260721T1000Z-260722T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-
EASTERN MONMOUTH-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-
DELAWARE-PHILADELPHIA-WESTERN CHESTER-EASTERN CHESTER-WESTERN
MONTGOMERY-EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS-
INCLUDING THE CITIES OF CHALFONT, GLASSBORO, KENNETT SQUARE,
DOYLESTOWN, WEST CHESTER, WILMINGTON, MOUNT HOLLY, FLEMINGTON,
OXFORD, SANDY HOOK, MOORESTOWN, NORRISTOWN, NEW BRUNSWICK,
LANSDALE, PERKASIE, POTTSTOWN, HONEY BROOK, CHERRY HILL,
PHILADELPHIA, SOMERVILLE, CAMDEN, TRENTON, MEDIA, MORRISTOWN,
COLLEGEVILLE, FREEHOLD, AND MORRISVILLE
307 AM EDT TUE JUL 21 2026
..FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT
* WHAT...FLASH FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE
POSSIBLE.
* WHERE...PORTIONS OF NORTHERN DELAWARE, INCLUDING THE FOLLOWING
AREA, NEW CASTLE, NEW JERSEY, INCLUDING THE FOLLOWING AREAS,
CAMDEN, EASTERN MONMOUTH, GLOUCESTER, HUNTERDON, MERCER,
MIDDLESEX, MORRIS, NORTHWESTERN BURLINGTON, SOMERSET AND WESTERN
MONMOUTH, AND SOUTHEAST PENNSYLVANIA, INCLUDING THE FOLLOWING
AREAS, DELAWARE, EASTERN CHESTER, EASTERN MONTGOMERY, LOWER BUCKS,
PHILADELPHIA, UPPER BUCKS, WESTERN CHESTER AND WESTERN MONTGOMERY.
* 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...
- SHOWERS AND THUNDERSTORMS WILL INCREASE TODAY INTO TONIGHT,
WITH THE MOST WIDESPREAD ACTIVITY OCCURRING THIS AFTERNOON
AND THIS EVENING. SOME HEAVY SHOWERS AND THUNDERSTORMS WILL
PRODUCE TORRENTIAL RAINFALL, WITH 2 TO 3 INCHES OF RAIN PER
HOUR POSSIBLE. THE EXCESSIVE RAINFALL WITHIN A SHORT PERIOD
OF TIME, ESPECIALLY IN URBAN AREAS, COULD LEAD TO FLASH
FLOODING.
- 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.
MJL/GORSE
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