Alert archive / New Jersey / Flash Flood Warnings in 2021
Flash Flood Warning 58, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 27, 2021, 5:44 PM EDT for Middlesex 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
- Aug 27, 2021, 5:44 PM EDT (21:44 UTC)
- Expired
- Aug 27, 2021, 9:31 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Middlesex County, NJ
The radar
The Philadelphia radar (KDIX), 60 km from the middle of the area, began a volume at 21:47 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 27, 5:55 PM EDT | FLASH FLOOD | Sayreville, NJ | WATER RESCUE REPORTED ON WASHINGTON ROAD IN SAYREVILLE. TIME ESTIMATED. |
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, 9.7 hours before the alert went out and 127 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
- 1159 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1043 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
960
WGUS51 KPHI 272144
FFWPHI
NJC023-280145-
/O.NEW.KPHI.FF.W.0058.210827T2144Z-210828T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
544 PM EDT Fri Aug 27 2021
The National Weather Service in Mount Holly has issued a
* Flash Flood Warning for...
Northeastern Middlesex County in northern New Jersey...
* Until 945 PM EDT.
* At 544 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 0.5 to 1 inch 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...
New Brunswick, Perth Amboy, Old Bridge, East Brunswick,
Sayreville, Brownville, North Brunswick Township, Woodbridge,
South River, Highland Park, Metuchen, and Spotswood.
This includes the following highways...
New Jersey Turnpike between exits 10 and 11.
Interstate 287 in New Jersey near mile marker 0.
Garden State Parkway between mile markers 121 and 129.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4037 7430 4039 7436 4051 7445 4055 7425
4054 7425 4052 7425 4051 7426 4050 7426
4050 7428 4049 7429 4049 7427 4048 7427
4047 7427 4046 7426 4046 7424 4045 7423
FLASH FLOOD...RADAR INDICATED
$$
Kruzdlo2 follow-up statements
210
WGUS71 KPHI 272237
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
637 PM EDT Fri Aug 27 2021
NJC023-280145-
/O.CON.KPHI.FF.W.0058.000000T0000Z-210828T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex NJ-
637 PM EDT Fri Aug 27 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT THIS
EVENING FOR NORTHEASTERN MIDDLESEX COUNTY...
At 637 PM EDT, Flooding was ongoing across portions of Sayreville. A
water rescue was reported on Washington Road.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets, and underpasses as well as other
drainage and low lying areas.
This includes the following highways...
New Jersey Turnpike between exits 10 and 11.
Interstate 287 in New Jersey between mile markers 0 and 1.
Garden State Parkway between mile markers 121 and 129.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
&&
LAT...LON 4037 7430 4039 7436 4051 7445 4055 7425
4054 7425 4052 7425 4051 7426 4050 7426
4050 7428 4049 7429 4049 7427 4048 7427
4047 7427 4046 7426 4046 7424 4045 7423
FLASH FLOOD...RADAR INDICATED
$$
Kruzdlo904
WGUS71 KPHI 280131
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
931 PM EDT Fri Aug 27 2021
NJC023-280141-
/O.CAN.KPHI.FF.W.0058.000000T0000Z-210828T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex NJ-
931 PM EDT Fri Aug 27 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN MIDDLESEX
COUNTY...
The heavy rain has ended. The Flash Flood Warning is cancelled.
A Flash Flood Watch remains in effect until 200 AM EDT Sunday for
portions of northern Delaware...New Jersey...and Pennsylvania.
LAT...LON 4037 7430 4039 7436 4051 7445 4055 7425
4054 7425 4052 7425 4051 7426 4050 7426
4050 7428 4049 7429 4049 7427 4048 7427
4047 7427 4046 7426 4046 7424 4045 7423
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 1:33 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden | 83 min |
| Aug 27, 2:18 PM EDT | Small Craft Advisory | PHI | 44 hr | |
| Aug 27, 2:28 PM EDT | Special Weather Statement | PHI | Atlantic | 47 min |
| Aug 27, 2:33 PM EDT | Areal Flood Advisory | PHI | Warren | 109 min |
| Aug 27, 2:37 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 38 min |
| Aug 27, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 35 min |
| Aug 27, 2:59 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 46 min |
| Aug 27, 3:07 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 24 min |
| Aug 27, 3:16 PM EDT | Special Weather Statement | PHI | Burlington | 44 min |
| Aug 27, 3:30 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 45 min |
| Aug 27, 3:38 PM EDT | Special Weather Statement | PHI | Camden | 52 min |
| Aug 27, 3:45 PM EDT | Special Weather Statement | PHI | Ocean | 30 min |
| Aug 27, 3:54 PM EDT | Special Weather Statement | PHI | Atlantic | 51 min |
| Aug 27, 3:59 PM EDT | Special Weather Statement | PHI | Ocean | 46 min |
| Aug 27, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 39 min |
| Aug 27, 4:37 PM EDT | Areal Flood Advisory | PHI | Gloucester | 106 min |
| Aug 27, 4:46 PM EDT | Special Marine Warning | PHI | 43 min | |
| Aug 27, 4:56 PM EDT | Special Weather Statement | PHI | Atlantic | 34 min |
| Aug 27, 5:02 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland | 29 min |
| Aug 27, 5:09 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Cumberland | 2 hr |
| Aug 27, 5:21 PM EDT | Special Weather Statement | PHI | Middlesex | 39 min |
| Aug 27, 5:29 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 3 hr |
| Aug 27, 6:52 PM EDT | Areal Flood Advisory | PHI | Salem | 98 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.