824
WGUS71 KPHI 170446
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1246 AM EDT MON AUG 17 2026
PAC029-045-091-101-170730-
/O.CON.KPHI.FF.W.0117.000000T0000Z-260817T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHESTER PA-DELAWARE PA-MONTGOMERY PA-PHILADELPHIA PA-
1246 AM EDT MON AUG 17 2026
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 AM EDT EARLY THIS
MORNING FOR CENTRAL CHESTER, NORTHERN DELAWARE, SOUTHERN MONTGOMERY
AND NORTHWESTERN PHILADELPHIA COUNTIES...
AT 1246 AM EDT, DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE WARNED
AREA. BETWEEN 1.5 AND 2.5 INCHES OF RAIN HAVE FALLEN. ADDITIONAL
RAINFALL AMOUNTS UP TO 0.5 INCHES ARE POSSIBLE IN THE WARNED AREA.
FLASH FLOODING IS ONGOING OR EXPECTED TO BEGIN SHORTLY.
HAZARD...FLASH FLOODING CAUSED BY HEAVY RAIN.
SOURCE...RADAR.
IMPACT...FLOODING OF SMALL CREEKS AND STREAMS, URBAN AREAS,
HIGHWAYS, STREETS, AND UNDERPASSES AS WELL AS OTHER
DRAINAGE AND LOW LYING AREAS.
SOME LOCATIONS THAT MAY EXPERIENCE FLASH FLOODING INCLUDE...
PHILADELPHIA, WEST CHESTER, NORRISTOWN, PHOENIXVILLE, WEST
NORRITON, EAST NORRITON, COATESVILLE, WESTTOWN, DOWNINGTOWN,
CONSHOHOCKEN, ROYERSFORD AND NARBERTH.
THIS INCLUDES THE FOLLOWING HIGHWAYS...
INTERSTATE 476 IN PENNSYLVANIA BETWEEN MILE MARKERS 7 AND 19.
INTERSTATE 76 IN PENNSYLVANIA BETWEEN MILE MARKERS 327 AND 338.
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 305 AND 333.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST
FLOOD DEATHS OCCUR IN VEHICLES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
LAT...LON 4008 7518 4007 7513 3994 7536 3989 7559
3996 7595 4016 7575 4022 7559
FLASH FLOOD...RADAR INDICATED
GUZZO
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