Flash Flood Warning 3, NWS Philadelphia/Mount Holly

Issued

Jun 14, 2026, 10:15 PM EDT (02:15 UTC)

Expired

Jun 15, 2026, 1:38 AM EDT

In force

3 hr

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

None

Counties New Castle County, DE, Chester County, PA, Delaware County, PA

The Philadelphia radar (KDIX), 98 km from the middle of the area, began a volume at 02:17 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

693 
WGUS51 KPHI 150215
FFWPHI
DEC003-PAC029-045-150615-
/O.NEW.KPHI.FF.W.0003.260615T0215Z-260615T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1015 PM EDT Sun Jun 14 2026

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Northwestern New Castle County in northern Delaware...
  Eastern Chester County in southeastern Pennsylvania...
  Delaware County in southeastern Pennsylvania...

* Until 215 AM EDT.

* At 1015 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 0.5 and 1 inch of rain 
  has fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. 
  Additional rainfall amounts of 1 to 2 inches are possible in the 
  warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  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...
  Wilmington, Newark, West Chester, Chester, Phoenixville, Yeadon, 
  Westtown, Folcroft, Swarthmore, Elsmere, Arden and Cheyney.

This includes the following highways...
	Interstate 476 in Pennsylvania between mile markers 0 and 12.
	Interstate 95 in Pennsylvania between mile markers 0 and 2...and
	between mile markers 6 and 10.
	Pennsylvania Turnpike between mile markers 305 and 323.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 3972 7577 3982 7569 4005 7567 4009 7588
      4019 7557 4004 7543 4004 7537 3993 7526
      3985 7528 3986 7537 3982 7545 3966 7576

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR

$$

RCM

090 
WGUS71 KPHI 150253
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1053 PM EDT Sun Jun 14 2026

DEC003-PAC029-045-150615-
/O.CON.KPHI.FF.W.0003.000000T0000Z-260615T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Chester PA-Delaware PA-
1053 PM EDT Sun Jun 14 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM EDT MONDAY FOR 
NORTHWESTERN NEW CASTLE, EASTERN CHESTER AND DELAWARE COUNTIES...

At 1053 PM EDT, local law enforcement reported thunderstorms 
producing heavy rain across the warned area. Between 2 and 3 inches 
of rain have fallen. The expected rainfall rate is 1 to 2 inches in 
1 hour. Additional rainfall amounts of 2 to 3 inches are possible in 
the warned area. Flash flooding is already occurring.

HAZARD...Life threatening flash flooding caused by thunderstorms.

SOURCE...Law enforcement reported.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets, and underpasses.

Some locations that may experience flash flooding include...
  Wilmington, Newark, West Chester, Chester, Phoenixville, Yeadon, 
  Westtown, Folcroft, Swarthmore, Elsmere, Arden and Cheyney.

This includes the following highways...
	Interstate 476 in Pennsylvania between mile markers 0 and 12.
	Interstate 95 in Pennsylvania near mile marker 2...and
	between mile markers 6 and 10.
	Pennsylvania Turnpike between mile markers 305 and 323.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 3972 7577 3982 7569 4005 7567 4009 7588
      4019 7557 4004 7543 4004 7537 3993 7526
      3985 7528 3986 7537 3982 7545 3966 7576

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR

$$

RCM

236 
WGUS71 KPHI 150538
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
138 AM EDT Mon Jun 15 2026

DEC003-PAC029-045-150548-
/O.CAN.KPHI.FF.W.0003.000000T0000Z-260615T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
New Castle DE-Chester PA-Delaware PA-
138 AM EDT Mon Jun 15 2026

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHWESTERN NEW CASTLE, 
EASTERN CHESTER AND DELAWARE COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat for most areas. A targeted Flood Warning was issued for 
portions of Delaware County as creeks and streams are rising or 
already in flood. Refer to that bulletin for the updated 
information. Please continue to heed remaining road closures.

&&

LAT...LON 3972 7577 3982 7569 4005 7567 4009 7588
      4019 7557 4004 7543 4004 7537 3993 7526
      3985 7528 3986 7537 3982 7545 3966 7576

$$

Hoeflich

Flash Flood Warnings in Pennsylvania, 2026Flash Flood Warnings in Delaware, 2026Every flash flood warning in 2026

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.