Alert archive / New Jersey / Flash Flood Warnings in 2026

Flash Flood Warning 62, NWS Philadelphia/Mount Holly

July 21, 2026Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 21, 2026, 10:38 PM EDT for Cape May County, New Jersey. It was in force for 4 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 21, 2026, 10:38 PM EDT (02:38 UTC)
Expired: Jul 22, 2026, 2:13 AM EDT
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

County Cape May County, NJ

The radar

The Dover AFB radar (KDOX), 56 km from the middle of the area, began a volume at 02:39 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.

What was reported inside it

Time	Report	Where	Remark
Jul 22, 12:06 AM EDT	FLASH FLOOD	Cape May, NJ	Several roads flooded in Cape May including Washington Street, Elmira Street, and Lafayette Street.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.6 hours before the alert went out and 267 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 935 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 555 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted.

162 
WGUS51 KPHI 220238
FFWPHI
NJC009-220645-
/O.NEW.KPHI.FF.W.0062.260722T0238Z-260722T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1038 PM EDT Tue Jul 21 2026

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Southwestern Cape May County in southern New Jersey...

* Until 245 AM EDT.

* At 1038 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 inches of 
  rain have fallen. The expected rainfall rate is 1 to 2.5 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...
  Cape May, North Wildwood, Wildwood Crest, Avalon, West Cape May, 
  Stone Harbor, Rio Grande, Diamond Beach, Green Creek, Cape May 
  Court House, Scotch Bonnet and North Cape May.

This includes Garden State Parkway between mile markers 0 and 11.

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 3903 7468 3896 7475 3890 7482 3889 7496
      3894 7502 3899 7501 3910 7495 3911 7479
      3910 7470

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2.5 INCHES IN 1 HOUR

$$

Hoeflich

3 follow-up statements

710 
WGUS71 KPHI 220321
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1121 PM EDT Tue Jul 21 2026

NJC009-220645-
/O.CON.KPHI.FF.W.0062.000000T0000Z-260722T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cape May NJ-
1121 PM EDT Tue Jul 21 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 AM EDT WEDNESDAY 
FOR SOUTHWESTERN CAPE MAY COUNTY...

At 1121 PM EDT, local law enforcement reported thunderstorms 
producing heavy rain with Route 147 closed due to flooding. Between 
2 and 4 inches of rain have fallen. The expected rainfall rate is 1 
to 2 inches in 1 hour. Additional rainfall amounts of 0.5 to 1 inch 
are possible in the warned area. Flash flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement reported.

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...
  Cape May, North Wildwood, Wildwood Crest, Avalon, West Cape May, 
  Stone Harbor, Rio Grande, Diamond Beach, Green Creek, Cape May 
  Court House, Scotch Bonnet and North Cape May.

This includes Garden State Parkway between mile markers 0 and 11.

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 3903 7468 3896 7475 3890 7482 3889 7496
      3894 7502 3899 7501 3910 7495 3911 7479
      3910 7470

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

$$

Hoeflich

698 
WGUS71 KPHI 220424
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1224 AM EDT Wed Jul 22 2026

NJC009-220645-
/O.CON.KPHI.FF.W.0062.000000T0000Z-260722T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cape May NJ-
1224 AM EDT Wed Jul 22 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 AM EDT EARLY THIS 
MORNING FOR SOUTHWESTERN CAPE MAY COUNTY...

At 1224 AM EDT, local law enforcement reported widespread flooding 
around Cape May. Between 2 and 5 inches of rain have fallen. 
Flooding impacts will continue, but no additional rainfall is 
expected. Flash flooding is already occurring.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Law enforcement reported.

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...
  Cape May, North Wildwood, Wildwood Crest, Avalon, West Cape May, 
  Stone Harbor, Rio Grande, Diamond Beach, Green Creek, Cape May 
  Court House, Scotch Bonnet and North Cape May.

This includes Garden State Parkway between mile markers 0 and 11.

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 3903 7468 3896 7475 3890 7482 3889 7496
      3894 7502 3899 7501 3910 7495 3911 7479
      3910 7470

FLASH FLOOD...OBSERVED

$$

Hoeflich

771 
WGUS71 KPHI 220613
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
213 AM EDT Wed Jul 22 2026

NJC009-220623-
/O.CAN.KPHI.FF.W.0062.000000T0000Z-260722T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cape May NJ-
213 AM EDT Wed Jul 22 2026

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN CAPE MAY 
COUNTY...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

&&

LAT...LON 3903 7468 3896 7475 3890 7482 3889 7496
      3894 7502 3899 7501 3910 7495 3911 7479
      3910 7470

$$

Gorse

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Lasted
Jul 21, 8:16 PM EDT	Special Marine Warning	PHI	59 min
Jul 21, 11:01 PM EDT	Special Marine Warning	PHI	59 min
Jul 21, 11:48 PM EDT	Special Marine Warning	PHI	57 min
Jul 22, 12:02 AM EDT	Special Marine Warning	PHI	58 min
Jul 22, 1:11 AM EDT	Special Marine Warning	PHI	64 min
Jul 22, 3:44 PM EDT	Special Marine Warning	PHI	61 min
Jul 22, 6:32 PM EDT	Special Marine Warning	PHI	58 min
Jul 22, 7:30 PM EDT	Special Marine Warning	PHI	35 min
Jul 22, 7:57 PM EDT	Special Marine Warning	PHI	45 min

Nearby

Flash Flood Warnings in New Jersey, 2026 Every flash flood warning in 2026

Sources

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.