Alert archive / New Jersey / Flash Flood Warnings in 2021
Flash Flood Warning 72, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 1, 2021, 6:05 PM EDT for 5 counties in New Jersey. It was in force for 10 hr. 51 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
- Sep 1, 2021, 6:05 PM EDT (22:05 UTC)
- Expired
- Sep 2, 2021, 3:53 AM EDT
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 22:06 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 |
|---|---|---|---|
| Sep 1, 7:30 PM EDT | FLASH FLOOD | Watchung, NJ | THE GAUGE ON STONY BROOK AT WATCHUNG (WTCN4) REACHED FLOOD STAGE AT 730 PM 9/1, CRESTING AT 18.02 FEET (MINOR FLOODING) AT 900 PM 9/1. |
| Sep 1, 7:31 PM EDT | FLASH FLOOD | 1 Sw North Brunswick, NJ | FLOODING CLOSED STATE HIGHWAY 91 AT HURON ROAD. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 7:33 PM EDT | FLASH FLOOD | Somerville, NJ | FLOODING CLOSED U.S. HIGHWAY 206 SOUTHBOUND NEAR SOMERSET STREET. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 7:33 PM EDT | FLASH FLOOD | Somerville, NJ | FLOODING ON US 206 SOUTHBOUND NORTH OF CR 626/SOMERSET ST (RARITAN BORO) ALL LANES CLOSED. |
| Sep 1, 7:40 PM EDT | FLASH FLOOD | 2 Wnw Martinsville, NJ | THE GAUGE ON THE WEST BRANCH MIDDLE BROOK NEAR MARTINSVILLE (MRTN4) REACHED FLOOD STAGE AT 740 PM 9/1, CRESTING AT 11.47 FEET (RECORD FLOODING) AT 1245 AM 9/2. |
| Sep 1, 7:45 PM EDT | FLASH FLOOD | Sayreville, NJ | MULTIPLE WATER RESCUES ON GOING ACROSS MIDDLESEX COUNTY. |
| Sep 1, 7:57 PM EDT | FLASH FLOOD | 1 E Somerville, NJ | STATE HIGHWAY 28 CLOSED EAST OF GATSON AVENUE. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 8:00 PM EDT | FLASH FLOOD | 1 W South Bound Brook, NJ | THE GAUGE ON MIDDLE BROOK AT BOUND BROOK (BDBN4) REACHED FLOOD STAGE AT 800 PM 9/1, CRESTING AT 20.66 FEET (RECORD FLOODING) AT 1115 AM 9/2. |
| Sep 1, 8:06 PM EDT | FLASH FLOOD | North Brunswick Twp, NJ | FLOODING ON STATE HIGHWAY 171 NORTH OF U.S. HIGHWAY 1 FORCED ITS CLOSURE. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 8:25 PM EDT | FLASH FLOOD | Green Brook Twp, NJ | FLOODING ON U.S. HIGHWAY 22 WEST OF WASHINGTON AVENUE WITH ALL LANES CLOSED. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 8:45 PM EDT | FLASH FLOOD | 1 Ene Highland Park, NJ | FLOODING ON U.S. HIGHWAY 1 AT PLAINFIELD AVENUE. ROAD CLOSED. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 8:45 PM EDT | FLASH FLOOD | 1 Ese Branchburg Twp, NJ | THE GAUGE ON THE NORTH BRANCH RARITAN RIVER AT SOUTH BRANCH (SBRN4) REACHED FLOOD STAGE AT 845 PM 9/1. |
| Sep 1, 8:45 PM EDT | FLASH FLOOD | 2 Ese Montgomery Twp, NJ | THE GAUGE ON THE MILLSTONE RIVER AT GRIGGSTOWN (GTNN4) REACHED FLOOD STAGE AT 845 PM 9/1, CRESTING AT 23.36 FEET (MAJOR FLOODING) AT 345 AM 9/2. |
| Sep 1, 8:53 PM EDT | FLASH FLOOD | 1 S Heathcote, NJ | FLOODING ON U.S. HIGHWAY 1 AT RAYMOND ROAD. ROAD CLOSED. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 9:00 PM EDT | FLASH FLOOD | 1 Sse Highland Park, NJ | THE GAUGE ON LAWRENCE BROOK AT WESTON MILLS (LABN4) REACHED FLOOD STAGE AT 900 PM 9/1, CRESTING AT 19.81 FEET (MINOR FLOODING) AT 230 AM 9/2. |
| Sep 1, 9:00 PM EDT | FLASH FLOOD | 1 Ssw Chatham, NJ | THE GAUGE ON THE PASSAIC RIVER AT CHATHAM (CAMN4) REACHED FLOOD STAGE AT 900 PM 9/1, CRESTING AT 8.1 FEET (MODERATE FLOODING) AT 1230 AM 9/2. |
| Sep 1, 9:00 PM EDT | FLASH FLOOD | 2 Sw Princeton, NJ | THE GAUGE ON STONY BROOK AT PRINCETON (PCTN4) REACHED FLOOD STAGE AT 900 PM 9/1, CRESTING AT 17.65 FEET (RECORD FLOODING) AT 345 AM 9/2. |
| Sep 1, 9:00 PM EDT | FLASH FLOOD | 4 Ese Oldwick, NJ | THE GAUGE ON THE LAMINGTON (BLACK) RIVER AT BURNT MILLS (BTMN4) REACHED FLOOD STAGE AT 900 PM 9/1, CRESTING AT 16.79 FEET (MAJOR FLOODING) AT 145 AM 9/2. |
| Sep 1, 9:15 PM EDT | FLASH FLOOD | 1 Wnw Millington, NJ | THE GAUGE ON THE PASSAIC RIVER AT MILLINGTON (MILN4) REACHED FLOOD STAGE AT 915 PM 9/1, CRESTING AT 8.86 FEET (MINOR FLOODING) AT 1215 PM 9/2. |
| Sep 1, 9:15 PM EDT | FLASH FLOOD | 2 Wnw Bridgewater, NJ | THE GAUGE ON THE NORTH BRANCH RARITAN RIVER AT NORTH BRANCH VILLAGE (NBAN4) REACHED FLOOD STAGE AT 915 PM 9/1, CRESTING AT 21.12 FEET (MINOR FLOODING) AT 300 AM 9/2. |
| Sep 1, 9:20 PM EDT | FLASH FLOOD | Somerville, NJ | MULTIPLE VEHICLES DISABLED AND STREETS IMPASSIBLE. |
| Sep 1, 9:24 PM EDT | HEAVY RAIN 6.58 | 3 Nnw Bridgewater, NJ | 24 HOUR TOTAL. 5.54 INCHES IN THE LAST 2.5 HOURS. |
| Sep 1, 9:30 PM EDT | FLASH FLOOD | Hillsborough Twp, NJ | SIGNIFICANT ROAD FLOODING IN HILLSBOROUGH. MULTIPLE TRUCKS AND CARS STUCK IN FLOOD WATERS. |
| Sep 1, 9:52 PM EDT | FLASH FLOOD | 1 N Port Reading, NJ | FLOODING ON THE NEW JERSEY TURNPIKE SOUTHBOUND FORCED ITS CLOSURE SOUTH OF EXIT 12. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 9:53 PM EDT | FLASH FLOOD | 1 Wnw South River, NJ | FLOODING ON STATE HIGHWAY 18 AT TICES LANE. ROAD CLOSED. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 10:00 PM EDT | FLASH FLOOD | 1 S Middlesex, NJ | A CONDOMINIUM COMPLEX SUFFERED SIGNIFICANT DAMAGE FROM FLASH FLOODING. SEVERAL WATER RESCUES WERE CONDUCTED IN THE COMPLEX. TIME ESTIMATED. |
| Sep 1, 10:15 PM EDT | FLASH FLOOD | 1 Ese Peapack And Glads, NJ | THE NORTH BRANCH RARITAN RIVER NEAR FAR HILLS (FARN4) REACHED FLOOD STAGE AT 1015 PM 9/1, CRESTING AT 6.53 FEET (MINOR FLOODING) AT 1045 PM 9/1. |
| Sep 1, 10:15 PM EDT | FLASH FLOOD | 1 Nw Middlesex, NJ | THE GAUGE ON BOUND BROOK AT MIDDLESEX (MDSN4) REACHED FLOOD STAGE AT 1015 PM 9/1, CRESTING AT 14.11 FEET (RECORD FLOODING) AT 530 AM 9/2. |
| Sep 1, 10:15 PM EDT | FLASH FLOOD | 2 Sse Millstone, NJ | THE GAUGE ON THE MILLSTONE RIVER AT BLACKWELLS MILLS (BKWN4) REACHED FLOOD STAGE AT 1015 PM 9/1, CRESTING AT 20.81 FEET (MAJOR FLOODING) AT 1100 AM 9/2. |
| Sep 1, 10:23 PM EDT | FLASH FLOOD | 1 Nw South Amboy, NJ | FLOODING ON U.S. HIGHWAY 9 NEAR THE EDISON BRIDGE FORCED ITS CLOSURE. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 10:45 PM EDT | FLASH FLOOD | 1 Ene Branchburg Twp, NJ | THE GAUGE ON THE NORTH BRANCH RARITAN RIVER NEAR RARITAN (RRTN4) REACHED FLOOD STAGE AT 1045 PM 9/1, CRESTING AT 19.52 FEET (RECORD FLOODING) AT 430 AM 9/2. |
| Sep 1, 10:45 PM EDT | FLASH FLOOD | Millstone, NJ | THE GAUGE ON THE MILLSTONE RIVER AT MILLSTONE (MITN4) REACHED FLOOD STAGE AT 1045 PM 9/1, CRESTING AT 21.82 FEET (MAJOR FLOODING) AT 730 AM 9/2. |
| Sep 1, 10:49 PM EDT | FLASH FLOOD | 1 Nw Edison, NJ | INTERSTATE 287 NEAR EXIT 3 CLOSED FROM FLOODING. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 10:58 PM EDT | FLASH FLOOD | Hillsborough Twp, NJ | SOCIAL MEDIA PHOTO OF SEVERE FLOODING WITH SEVERAL FEET OF WATER OVER THE GROUND IN A NEIGHBORHOOD. |
| Sep 1, 11:00 PM EDT | FLASH FLOOD | 1 S Manville, NJ | THE GAUGE ON THE MILLSTONE RIVER AT WESTON (WETN4) REACHED FLOOD STAGE AT 1100 PM 9/1, CRESTING AT 23.75 FEET (RECORD FLOODING) AT 1100 AM 9/2. |
| Sep 1, 11:00 PM EDT | FLASH FLOOD | Bridgewater, NJ | *** 5 FATAL *** OVER 50 WATER RESCUES CONDUCTED IN SOMERSET COUNTY, WITH FIVE KNOWN FATALITIES AS OF SEPTEMBER 4, INCLUDING TWO IN BRIDGEWATER AND TWO IN HILLSBOROUGH TOWNSHIP. |
| Sep 1, 11:08 PM EDT | FLASH FLOOD | 3 Nnw Bridgewater, NJ | INTERSTATE 287 LOCAL LANES CLOSED SOUTH OF I-78. TIME BASED ON DISPATCH REPORT. |
| Sep 1, 11:15 PM EDT | FLASH FLOOD | Bernards Twp, NJ | MULTIPLE WATER RESCUES. ROADS IMPASSABLE INCLUDING LYONS ROAD. |
| Sep 1, 11:15 PM EDT | FLASH FLOOD | Manville, NJ | THE GAUGE ON THE RARITAN RIVER AT MANVILLE (MNVN4) REACHED FLOOD STAGE AT 1115 PM 9/1, CRESTING AT 27.66 FEET (RECORD FLOODING) AT 915 AM 9/2. |
| Sep 1, 11:30 PM EDT | FLASH FLOOD | 1 Wsw South Bound Brook, NJ | THE GAUGE ON THE RARITAN RIVER AT BOUND BROOK (BDKN4) REACHED FLOOD STAGE AT 1130 PM 9/1. |
| Sep 1, 11:55 PM EDT | FLASH FLOOD | Bound Brook, NJ | STATE HIGHWAY 28 CLOSED AND RARITAN AVENUE CLOSED FROM FLOODING. TIME BASED ON DISPATCH REPORT. |
| Sep 2, 12:00 AM EDT | FLASH FLOOD | 1 E Highland Park, NJ | OVER 75 WATER RESCUES WERE CONDUCTED IN PISCATAWAY FROM FLASH FLOODING. NUMEROUS VEHICLES DAMAGED OR DESTROYED FROM FLOOD WATERS. |
| Sep 2, 12:00 AM EDT | FLASH FLOOD | 1 Nne Middlesex, NJ | U.S HIGHWAY 22 COLLAPSED FROM FLOOD WATERS NEAR MOUNTAIN PARKWAY AND WARRENVILLE AVENUE. TIME ESTIMATED BASED ON DISPATCH REPORTS. |
| Sep 2, 12:00 AM EDT | HEAVY RAIN 9 | South Plainfield, NJ | |
| Sep 2, 12:02 AM EDT | FLASH FLOOD | 1 S Highland Park, NJ | STATE HIGHWAY 18 CLOSED FROM PAULUS BOULEVARD TO RIVER ROAD FROM FLOODING. TIME BASED ON DISPATCH REPORT. |
| Sep 2, 12:30 AM EDT | FLASH FLOOD | Edison, NJ | *** 3 FATAL *** DOZENS OF WATER RESCUES IN MIDDLESEX COUNTY DURING THE FLASH FLOODING SEPTEMBER 1-2, WITH THREE KNOWN FATALITIES, INCLUDING ONE IN ISELIN AND ONE IN EDISON. |
| Sep 2, 1:14 AM EDT | FLASH FLOOD | 1 S Somerville, NJ | FLASH FLOODING ON THE RARITAN RIVER FORCED THE CLOSURE OF U.S. HIGHWAY 206. TIME BASED ON DISPATCH REPORT. |
| Sep 2, 1:30 AM EDT | HEAVY RAIN 7.76 | Bridgewater, NJ | |
| Sep 2, 2:00 AM EDT | FLASH FLOOD | 2 Ene North Princeton, NJ | KINGSTON ROAD CLOSED FROM FLOODING. TIME BASED ON DISPATCH REPORT. |
| Sep 2, 3:27 AM EDT | FLASH FLOOD | 2 Ese Lawrence Twp, NJ | FLOODING ON U.S. HIGHWAY 1 BETWEEN FRANKLIN CORNER ROAD AND QUAKER BRIDGE ROAD. ALL LANES CLOSED. TIME BASED ON DISPATCH REPORT. |
| Sep 2, 4:00 AM EDT | FLOOD | 2 Ene Somerset, NJ | EASTON AVE UNDER A FEW FEET OF WATER WITH ABANDONED AND FLOODED VEHICLES. |
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, 10.1 hours before the alert went out and 141 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
- 51 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1274 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
991
WGUS51 KPHI 012205
FFWPHI
NJC019-021-023-027-035-020400-
/O.NEW.KPHI.FF.W.0072.210901T2205Z-210902T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
605 PM EDT Wed Sep 1 2021
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Eastern Mercer County in central New Jersey...
Middlesex County in northern New Jersey...
Southeastern Morris County in northern New Jersey...
Somerset County in northern New Jersey...
East Central Hunterdon County in northwestern New Jersey...
* Until midnight EDT.
* At 605 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1.5 inches of
rain have fallen. The expected rainfall rate is 0.5 to 1.5 inches
in 1 hour. 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...
New Brunswick, Perth Amboy, Somerville, Somerset, Edison, Old
Bridge, East Brunswick, Bridgewater, South Brunswick, Sayreville,
North Brunswick, and Carteret.
This includes the following highways...
New Jersey Turnpike between exits 8 and 13.
Interstate 78 in New Jersey between mile markers 26 and 42.
Interstate 295 in New Jersey between mile markers 58 and 69.
Interstate 195 in New Jersey between mile markers 0 and 8.
Interstate 287 in New Jersey between mile markers 0 and 30.
Garden State Parkway between mile markers 121 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4074 7474 4074 7437 4067 7446 4066 7445
4066 7440 4060 7446 4060 7422 4056 7422
4055 7425 4050 7426 4049 7429 4045 7422
4041 7425 4028 7440 4025 7449 4019 7456
4018 7461 4014 7459 4018 7470 4015 7472
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.5-1.5 INCHES IN 1 HOUR
$$
CMS4 follow-up statements
836
WGUS71 KPHI 012243
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
643 PM EDT Wed Sep 1 2021
NJC019-021-023-027-035-020400-
/O.CON.KPHI.FF.W.0072.000000T0000Z-210902T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Mercer NJ-Middlesex NJ-Morris NJ-Somerset NJ-
643 PM EDT Wed Sep 1 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
FOR EASTERN MERCER, MIDDLESEX, SOUTHEASTERN MORRIS, SOMERSET, AND
EAST CENTRAL HUNTERDON COUNTIES...
At 643 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 1
and 3 inches of rain have fallen. The expected rainfall rate is 0.5
to 1.5 inches in 1 hour. Flash flooding is already occurring.
HAZARD...Life threatening flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets, and underpasses.
Some locations that may experience flash flooding include...
New Brunswick, Perth Amboy, Somerville, Somerset, Edison, Old
Bridge, East Brunswick, Bridgewater, South Brunswick, Sayreville,
North Brunswick, and Carteret.
This includes the following highways...
New Jersey Turnpike between exits 8 and 13.
Interstate 78 in New Jersey between mile markers 26 and 42.
Interstate 295 in New Jersey between mile markers 61 and 68.
Interstate 195 in New Jersey between mile markers 1 and 8.
Interstate 287 in New Jersey between mile markers 0 and 30.
Garden State Parkway between mile markers 121 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4074 7474 4074 7437 4067 7446 4066 7445
4066 7440 4060 7446 4060 7422 4056 7422
4055 7425 4050 7426 4049 7429 4045 7422
4041 7425 4028 7440 4025 7449 4019 7456
4018 7461 4014 7459 4018 7470 4015 7472
FLASH FLOOD...RADAR AND GAUGE INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.5-1.5 INCHES IN 1 HOUR
$$
CMS058
WGUS71 KPHI 012348
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
748 PM EDT Wed Sep 1 2021
NJC019-021-023-027-035-020400-
/O.CON.KPHI.FF.W.0072.000000T0000Z-210902T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Mercer NJ-Middlesex NJ-Morris NJ-Somerset NJ-
748 PM EDT Wed Sep 1 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
FOR EASTERN MERCER, MIDDLESEX, SOUTHEASTERN MORRIS, SOMERSET, AND
EAST CENTRAL HUNTERDON COUNTIES...
At 748 PM EDT, local law enforcement reported flash flooding across
the warned area. Several river gauges have reached flood stage, and
several road closures have been reported. Between 1.5 and 4.5 inches
of rain have fallen. The expected rainfall rate is 0.5 to 1.5 inches
in 1 hour. Flash flooding is already occurring.
HAZARD...Life threatening flash flooding caused by heavy rain.
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...
New Brunswick, Perth Amboy, Somerville, Somerset, Edison, Old
Bridge, East Brunswick, Bridgewater, South Brunswick, Sayreville,
North Brunswick, and Carteret.
This includes the following highways...
New Jersey Turnpike between exits 8 and 13.
Interstate 78 in New Jersey between mile markers 26 and 42.
Interstate 295 in New Jersey between mile markers 61 and 68.
Interstate 195 in New Jersey between mile markers 1 and 8.
Interstate 287 in New Jersey between mile markers 0 and 30.
Garden State Parkway between mile markers 121 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4074 7474 4074 7437 4067 7446 4066 7445
4066 7440 4060 7446 4060 7422 4056 7422
4055 7425 4050 7426 4049 7429 4045 7422
4041 7425 4028 7440 4025 7449 4019 7456
4018 7461 4014 7459 4018 7470 4015 7472
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.5-1.5 INCHES IN 1 HOUR
$$
CMS663
WGUS51 KPHI 020329
FFWPHI
NJC019-021-023-027-035-020800-
/O.EXT.KPHI.FF.W.0072.000000T0000Z-210902T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
1129 PM EDT Wed Sep 1 2021
The National Weather Service in Mount Holly has extended the
* Flash Flood Warning for...
Eastern Mercer County in central New Jersey...
Middlesex County in northern New Jersey...
Southeastern Morris County in northern New Jersey...
Somerset County in northern New Jersey...
East Central Hunterdon County in northwestern New Jersey...
* Until 400 AM EDT.
* At 1129 PM EDT, local law enforcement reported flash flooding
across the warned area. Numerous roads are closed, and several
river and stream gauges are in flood. Water rescues continue.
Avoid travel in the warned area. Between 4 and 9 inches of rain
have fallen. Flash flooding will continue for the next several
hours.
HAZARD...Life threatening flash flooding caused by heavy rain.
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...
New Brunswick, Perth Amboy, Somerville, Somerset, Edison, Old
Bridge, East Brunswick, Bridgewater, South Brunswick, Sayreville,
North Brunswick, and Carteret.
This includes the following highways...
New Jersey Turnpike between exits 8 and 13.
Interstate 78 in New Jersey between mile markers 26 and 42.
Interstate 295 in New Jersey between mile markers 61 and 68.
Interstate 195 in New Jersey between mile markers 1 and 8.
Interstate 287 in New Jersey between mile markers 0 and 30.
Garden State Parkway between mile markers 121 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4074 7474 4074 7437 4067 7446 4066 7445
4066 7440 4060 7446 4060 7422 4056 7422
4055 7425 4050 7426 4049 7429 4045 7422
4041 7425 4028 7440 4025 7449 4019 7456
4018 7461 4014 7459 4018 7470 4015 7472
FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CMS618
WGUS71 KPHI 020753
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
353 AM EDT Thu Sep 2 2021
NJC019-021-023-027-035-020803-
/O.CAN.KPHI.FF.W.0072.000000T0000Z-210902T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hunterdon NJ-Mercer NJ-Middlesex NJ-Morris NJ-Somerset NJ-
353 AM EDT Thu Sep 2 2021
...FLASH FLOOD WARNING FOR EASTERN MERCER, MIDDLESEX, SOUTHEASTERN
MORRIS, SOMERSET, AND EAST CENTRAL HUNTERDON COUNTIES HAS BEEN
REPLACED WITH A FLOOD WARNING...
Please heed road closures.
LAT...LON 4074 7474 4074 7437 4067 7446 4066 7445
4066 7440 4060 7446 4060 7422 4056 7422
4055 7425 4050 7426 4049 7429 4045 7422
4041 7425 4028 7440 4025 7449 4019 7456
4018 7461 4014 7459 4018 7470 4015 7472
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 3:23 AM EDT | Gale Warning | PHI | 32 hr | |
| Sep 1, 3:23 AM EDT | Small Craft Advisory | PHI | 41 hr | |
| Sep 1, 4:34 AM EDT | Rip Current Statement | PHI | Atlantic, Cape May, Monmouth, Ocean | 39 hr |
| Sep 1, 7:58 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 47 min |
| Sep 1, 8:39 AM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 39 min |
| Sep 1, 9:11 AM EDT | Special Marine Warning | PHI | 64 min | |
| Sep 1, 11:24 AM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 3 hr |
| Sep 1, 4:04 PM EDT | Areal Flood Warning | PHI | Warren | 24 hr |
| Sep 1, 4:12 PM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 7 hr |
| Sep 1, 4:27 PM EDT | River Flood Warning | PHI | Morris, Somerset | 6 days |
| Sep 1, 4:27 PM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 8 days |
| Sep 1, 4:27 PM EDT | River Flood Warning | PHI | Essex, Morris, Passaic | 6 days |
| Sep 1, 4:27 PM EDT | River Flood Warning | PHI | Essex, Passaic | 21 days |
| Sep 1, 4:33 PM EDT | River Flood Warning | PHI | Morris, Passaic | 46 hr |
| Sep 1, 4:40 PM EDT | River Flood Warning | PHI | Hunterdon, Somerset | 36 hr |
| Sep 1, 4:40 PM EDT | River Flood Warning | PHI | Somerset | 22 hr |
| Sep 1, 4:40 PM EDT | River Flood Warning | PHI | Middlesex, Somerset | 42 hr |
| Sep 1, 4:40 PM EDT | River Flood Warning | PHI | Middlesex, Somerset | 48 hr |
| Sep 1, 4:41 PM EDT | River Flood Warning | PHI | Somerset | 61 hr |
| Sep 1, 5:13 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer | 47 min |
| Sep 1, 5:26 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester, Salem | 9 hr |
| Sep 1, 5:33 PM EDT | Special Marine Warning | PHI | 27 min | |
| Sep 1, 5:34 PM EDT | Tornado Warning | PHI | Mercer | 26 min |
| Sep 1, 5:35 PM EDT | Tornado Warning | PHI | Cumberland, Salem | 25 min |
| Sep 1, 5:42 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Morris, Somerset, Warren | 10 hr |
| Sep 1, 5:57 PM EDT | Tornado Warning | PHI | Gloucester, Salem | 33 min |
| Sep 1, 5:57 PM EDT | Tornado Warning | PHI | Hunterdon, Mercer, Somerset | 33 min |
| Sep 1, 6:08 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 6 hr |
| Sep 1, 6:14 PM EDT | Special Marine Warning | PHI | 61 min | |
| Sep 1, 6:20 PM EDT | Tornado Warning | PHI | Hunterdon, Mercer, Somerset | 40 min |
| Sep 1, 6:22 PM EDT | Tornado Warning | PHI | Burlington, Camden, Gloucester | 23 min |
| Sep 1, 6:42 PM EDT | Tornado Warning | PHI | Burlington, Camden | 33 min |
| Sep 1, 6:59 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset | 61 min |
| Sep 1, 7:04 PM EDT | Tornado Warning | PHI | Burlington, Mercer | 26 min |
| Sep 1, 7:22 PM EDT | Tornado Warning | PHI | Hunterdon, Mercer | 11 min |
| Sep 1, 7:28 PM EDT | Tornado Warning | PHI | Mercer, Middlesex, Morris, Somerset | 47 min |
| Sep 1, 7:31 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Somerset | 4 hr |
| Sep 1, 7:44 PM EDT | Special Marine Warning | PHI | 61 min |
Nearby
Flash Flood Warnings in New Jersey, 2021Every flash flood warning in 2021
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.