Alert archive / New Jersey / Flash Flood Warnings in 2022
Flash Flood Warning 14, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 22, 2022, 9:46 AM EDT for Hunterdon County, Somerset County, New Jersey. It was in force for 4 hr. 4 reports 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
- Aug 22, 2022, 9:46 AM EDT (13:46 UTC)
- Expired
- Aug 22, 2022, 1:45 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hunterdon County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 77 km from the middle of the area, began a volume at 13:50 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 |
|---|---|---|---|
| Aug 22, 10:06 AM EDT | FLASH FLOOD | 2 N Branchburg Twp, NJ | CORRECTS PREVIOUS FLASH FLOOD REPORT FROM 2 N BRANCHBURG TWP WITH UPDATED LOCATION. REPORTS OF READINGTON ROAD/STATION ROAD CLOSED DUE TO HIGH WATER/FLASH FLOODING. TIME ESTIMATED VIA RADAR. |
| Aug 22, 10:06 AM EDT | FLASH FLOOD | 2 N Branchburg Twp, NJ | REPORTS OF ROAD CLOSED DUE TO HIGH WATER/FLASH FLOODING. TIME ESTIMATED VIA RADAR. |
| Aug 22, 11:32 AM EDT | HEAVY RAIN 3.25 | 3 Nw Bridgewater, NJ | ASOS STATION KSMQ SOMERVILLE. |
| Aug 22, 11:49 AM EDT | HEAVY RAIN 4.74 | 3 Nnw Bridgewater, NJ | MESONET STATION FW8114 BRIDGEWATER. |
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 12:00Z, 1.8 hours before the alert went out and 150 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.
- Mixed-layer CAPE
- 294 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 539 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
681
WGUS51 KPHI 221346
FFWPHI
NJC019-035-221745-
/O.NEW.KPHI.FF.W.0014.220822T1346Z-220822T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
946 AM EDT Mon Aug 22 2022
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northern Somerset County in northern New Jersey...
East Central Hunterdon County in northwestern New Jersey...
* Until 145 PM EDT.
* At 946 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 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...
Somerville, Bridgewater, Peapack And Gladstone, Lebanon, Far
Hills, White House Station, Martinsville, Basking Ridge,
Bernardsville, and Raritan.
This includes the following highways...
Interstate 78 in New Jersey between mile markers 22 and 37.
Interstate 287 in New Jersey between mile markers 15 and 28.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Flooding is occurring or is imminent. Most flood related deaths
occur in automobiles. Do not attempt to cross water covered bridges,
dips, or low water crossings. Never try to cross a flowing stream,
even a small one, on foot. To escape rising water find another route
over higher ground.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4054 7475 4053 7479 4067 7483 4073 7456
4067 7453 4066 7453 4065 7453 4065 7452
4059 7449 4059 7450
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
$$
MPS3 follow-up statements
714
WGUS71 KPHI 221400
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
1000 AM EDT Mon Aug 22 2022
NJC019-035-221745-
/O.CON.KPHI.FF.W.0014.000000T0000Z-220822T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Somerset NJ-
1000 AM EDT Mon Aug 22 2022
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 PM EDT THIS
AFTERNOON FOR NORTHERN SOMERSET AND EAST CENTRAL HUNTERDON
COUNTIES...
At 1000 AM EDT, Doppler radar indicated heavy rain across the warned
area. Between 1 and 3 inches of rain have fallen. The expected
rainfall rate is 2 to 4 inches in 1 hour. Additional rainfall
amounts of 3 to 4 inches are possible in the warned area. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
Some locations that may experience flash flooding include...
Somerville, Bridgewater, Peapack And Gladstone, Lebanon, Far
Hills, White House Station, Martinsville, Basking Ridge,
Bernardsville, and Raritan.
This includes the following highways...
Interstate 78 in New Jersey between mile markers 22 and 37.
Interstate 287 in New Jersey between mile markers 15 and 28.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4054 7475 4053 7479 4067 7483 4073 7456
4067 7453 4066 7453 4065 7453 4065 7452
4059 7449 4059 7450
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...2-4 INCHES IN 1 HOUR
$$
MPS520
WGUS71 KPHI 221511
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
1111 AM EDT Mon Aug 22 2022
NJC019-035-221745-
/O.CON.KPHI.FF.W.0014.000000T0000Z-220822T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Somerset NJ-
1111 AM EDT Mon Aug 22 2022
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 PM EDT THIS
AFTERNOON FOR NORTHERN SOMERSET AND EAST CENTRAL HUNTERDON
COUNTIES...
At 1111 AM EDT, Doppler radar indicated heavy rain across the warned
area. Between 2 and 4 inches of rain have fallen. The heaviest of
the rain is moving out of the warned area, and the rainfall rates
will average 1 inch 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 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...
Somerville, Bridgewater, Peapack And Gladstone, Lebanon, Far
Hills, White House Station, Martinsville, Basking Ridge,
Bernardsville, and Raritan.
This includes the following highways...
Interstate 78 in New Jersey between mile markers 22 and 37.
Interstate 287 in New Jersey between mile markers 15 and 28.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4054 7475 4053 7479 4067 7483 4073 7456
4067 7453 4066 7453 4065 7453 4065 7452
4059 7449 4059 7450
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1 INCH IN 1 HOUR
$$
MPS545
WGUS71 KPHI 221737
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
137 PM EDT Mon Aug 22 2022
NJC019-035-221747-
/O.EXP.KPHI.FF.W.0014.000000T0000Z-220822T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Somerset NJ-
137 PM EDT Mon Aug 22 2022
...FLASH FLOOD WARNING WILL EXPIRE AT 145 PM EDT THIS AFTERNOON FOR
NORTHERN SOMERSET AND EAST CENTRAL HUNTERDON COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat.
LAT...LON 4054 7475 4053 7479 4067 7483 4073 7456
4067 7453 4066 7453 4065 7453 4065 7452
4059 7449 4059 7450
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 12:18 AM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 64 min |
| Aug 22, 2:01 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 99 min |
| Aug 22, 3:42 AM EDT | Areal Flood Advisory | PHI | Hunterdon | 61 min |
| Aug 22, 4:22 AM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean | 3 hr |
| Aug 22, 4:37 AM EDT | Flash Flood Warning | PHI | Burlington, Ocean | 4 hr |
| Aug 22, 5:35 AM EDT | Special Marine Warning | PHI | 55 min | |
| Aug 22, 5:46 AM EDT | Flash Flood Warning | PHI | Ocean | 5 hr |
| Aug 22, 6:22 AM EDT | Special Marine Warning | PHI | 53 min | |
| Aug 22, 11:02 AM EDT | Flash Flood Warning | PHI | Morris, Sussex | 3 hr |
| Aug 22, 11:39 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Warren | 3 hr |
| Aug 22, 1:04 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset | 3 hr |
| Aug 22, 3:24 PM EDT | Areal Flood Advisory | PHI | Morris | 43 min |
| Aug 22, 4:04 PM EDT | Areal Flood Advisory | PHI | Burlington | 60 min |
| Aug 22, 4:46 PM EDT | Areal Flood Advisory | PHI | Middlesex | 86 min |
| Aug 22, 5:41 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth | 53 min |
| Aug 22, 5:44 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 46 min |
| Aug 22, 6:26 PM EDT | Special Weather Statement | PHI | Morris | 64 min |
Nearby
Flash Flood Warnings in New Jersey, 2022Every 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.