Alert archive / New Jersey / Flash Flood Warnings in 2022

Flash Flood Warning 3, NWS Philadelphia/Mount Holly

June 1, 2022Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 1, 2022, 9:26 PM EDT for Morris County, Somerset 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: Jun 1, 2022, 9:26 PM EDT (01:26 UTC)
Expired: Jun 2, 2022, 1:30 AM EDT
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 98 km from the middle of the area, began a volume at 01:26 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
Jun 1, 9:40 PM EDT	FLASH FLOOD	Mendham, NJ	SOCIAL MEDIA. REPORTED PONDING ON MAIN ROADS WITH SIGNIFICANT FLOODING ON SIDE STREETS. TIME ESTIMATED VIA RADAR.

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

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 1.4 hours before the alert went out and 218 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 610 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

928 
WGUS51 KPHI 020126
FFWPHI
NJC027-035-020530-
/O.NEW.KPHI.FF.W.0003.220602T0126Z-220602T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
926 PM EDT Wed Jun 1 2022

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Southern Morris County in northern New Jersey...
  North Central Somerset County in northern New Jersey...

* Until 130 AM EDT.

* At 926 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. 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...
  Morristown, Dover, Madison, Hopatcong, Florham Park, Hackettstown, 
  Chatham, Wharton, Morris Plains, Mount Arlington, Mendham, and 
  Stanhope.

This includes the following highways...
	Interstate 80 in New Jersey between mile markers 24 and 31.
	Interstate 287 in New Jersey between mile markers 26 and 40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 4079 7487 4084 7482 4085 7482 4091 7477
      4091 7476 4091 7472 4090 7471 4092 7466
      4081 7435 4080 7436 4078 7437 4076 7438
      4076 7436 4074 7437 4065 7451

FLASH FLOOD...RADAR INDICATED

$$

Fitzsimmons

2 follow-up statements

242 
WGUS71 KPHI 020327
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1127 PM EDT Wed Jun 1 2022

NJC027-035-020530-
/O.CON.KPHI.FF.W.0003.000000T0000Z-220602T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-Somerset NJ-
1127 PM EDT Wed Jun 1 2022

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 AM EDT THURSDAY 
FOR SOUTHERN MORRIS AND NORTH CENTRAL SOMERSET COUNTIES...

At 1127 PM EDT, local law enforcement reported flash flooding in 
portions of Somerset County. Between 2 and 3 inches of rain have 
fallen. Additional rainfall amounts up to 0.5 inches are possible in 
the warned area. 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...
  Morristown, Dover, Madison, Hopatcong, Florham Park, Hackettstown, 
  Chatham, Wharton, Morris Plains, Mount Arlington, Mendham, and 
  Stanhope.

This includes the following highways...
	Interstate 80 in New Jersey between mile markers 25 and 31.
	Interstate 287 in New Jersey between mile markers 26 and 40.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4079 7487 4084 7482 4085 7482 4091 7477
      4091 7476 4091 7472 4090 7471 4092 7466
      4081 7435 4080 7436 4078 7437 4076 7438
      4076 7436 4074 7437 4065 7451

FLASH FLOOD...OBSERVED

$$

SFJ

979 
WGUS71 KPHI 020520
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
120 AM EDT Thu Jun 2 2022

NJC027-035-020530-
/O.EXP.KPHI.FF.W.0003.000000T0000Z-220602T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morris NJ-Somerset NJ-
120 AM EDT Thu Jun 2 2022

...FLASH FLOOD WARNING WILL EXPIRE AT 130 AM EDT EARLY THIS MORNING 
FOR SOUTHERN MORRIS AND NORTH CENTRAL SOMERSET COUNTIES...

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

LAT...LON 4079 7487 4084 7482 4085 7482 4091 7477
      4091 7476 4091 7472 4090 7471 4092 7466
      4081 7435 4080 7436 4078 7437 4076 7438
      4076 7436 4074 7437 4065 7451

$$

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 8:26 PM EDT	Areal Flood Advisory	PHI	Morris, Somerset, Sussex, Warren	4 hr
Jun 1, 8:44 PM EDT	Dense Fog Advisory	PHI	Atlantic, Cape May, Cumberland, Ocean	9 hr
Jun 1, 11:51 PM EDT	Areal Flood Advisory	PHI	Middlesex, Somerset	91 min
Jun 2, 2:59 AM EDT	Areal Flood Advisory	PHI	Monmouth, Ocean	45 min
Jun 2, 3:07 PM EDT	Flood Watch	PHI	Burlington, Camden, Gloucester, Mercer	5 hr
Jun 2, 4:14 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer	31 min
Jun 2, 4:48 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	42 min
Jun 2, 5:24 PM EDT	Special Marine Warning	PHI		67 min
Jun 2, 5:26 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	34 min
Jun 2, 5:32 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden	3 hr
Jun 2, 6:26 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	2 hr
Jun 2, 7:07 PM EDT	Special Marine Warning	PHI		53 min
Jun 2, 7:37 PM EDT	Special Marine Warning	PHI		53 min
Jun 2, 7:58 PM EDT	Special Marine Warning	PHI		62 min

Nearby

Flash Flood Warnings in New Jersey, 2022 Every flash flood warning in 2022

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.