Alert archive / New Jersey / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 172, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 3, 2024, 1:27 PM EDT for Morris County, Sussex County, Warren County, New Jersey. It was in force for 48 min. 8 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 3, 2024, 1:27 PM EDT (17:27 UTC)
- Expired
- Aug 3, 2024, 2:15 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 119 km from the middle of the area, began a volume at 17:27 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 3, 1:30 PM EDT | HAIL 0.5 | Blairstown, NJ | |
| Aug 3, 1:33 PM EDT | TSTM WND DMG | 1 Wsw Blairstown Twp, NJ | Several trees and wires down around Blairstown. Time estimated from radar. |
| Aug 3, 1:35 PM EDT | TSTM WND DMG | 1 Nne Hope, NJ | Report of several trees and wires down around Hope. Time estimated from radar. |
| Aug 3, 1:49 PM EDT | TSTM WND DMG | 1 N Frelinghuysen Twp, NJ | Downed tree on NJ 94 in both directions North of CR 661/Ramsey Rd in Fredon Twp. Time estimated from radar. |
| Aug 3, 1:54 PM EDT | TSTM WND DMG | 1 S Fredon Twp, NJ | Several trees and wires down around Fredon Township. Time estimated from radar. |
| Aug 3, 2:00 PM EDT | TSTM WND DMG | 1 Ene Greendell, NJ | Multiple trees down near Green Township. Time estimated from radar. |
| Aug 3, 2:01 PM EDT | TSTM WND DMG | 1 Wsw Andover-Aeroflex, NJ | Downed tree on US 206 northbound South of CR 603/Brighton Rd in Andover Twp. Right shoulder closed. Time estimated from radar. |
| Aug 3, 2:07 PM EDT | TSTM WND DMG | Hampton Twp, NJ | Trees and wires down in Hampton Township. Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 3, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 5.5 hours before the alert went out and 172 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
- 388 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 974 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.9
The text
As transmitted.
378
WUUS51 KPHI 031727
SVRPHI
NJC027-037-041-031815-
/O.NEW.KPHI.SV.W.0172.240803T1727Z-240803T1815Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
127 PM EDT Sat Aug 3 2024
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
West central Morris County in northern New Jersey...
Southwestern Sussex County in northwestern New Jersey...
Northern Warren County in northwestern New Jersey...
* Until 215 PM EDT.
* At 127 PM EDT, a severe thunderstorm was located over Blairstown,
or 14 miles southwest of Newton, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Newton, Hopatcong, Hackettstown, Blairstown, Mount Arlington,
Stanhope, Netcong, Hope, Andover, Allamuchy-Panther Valley,
Greendell, Budd Lake, Great Meadows-Vienna, Succasunna-Kenvil, and
Lake Mohawk.
This includes Interstate 80 in New Jersey between mile markers 6 and
30.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4088 7506 4099 7511 4114 7471 4086 7463
TIME...MOT...LOC 1727Z 258DEG 19KT 4095 7500
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann2 follow-up statements
221
WWUS51 KPHI 031740
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
140 PM EDT Sat Aug 3 2024
NJC027-031750-
/O.CAN.KPHI.SV.W.0172.000000T0000Z-240803T1815Z/
Morris NJ-
140 PM EDT Sat Aug 3 2024
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MORRIS COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern and northwestern New Jersey.
LAT...LON 4114 7471 4092 7465 4092 7500 4101 7506
TIME...MOT...LOC 1740Z 239DEG 23KT 4099 7491
$$
NJC037-041-031815-
/O.CON.KPHI.SV.W.0172.000000T0000Z-240803T1815Z/
Sussex NJ-Warren NJ-
140 PM EDT Sat Aug 3 2024
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR SOUTHWESTERN SUSSEX AND NORTHEASTERN WARREN COUNTIES...
At 140 PM EDT, a severe thunderstorm was located near Blairstown, or
9 miles southwest of Newton, moving northeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Newton, Hopatcong, Blairstown, Mount Arlington, Stanhope, Andover,
Greendell, Five Points, Allamuchy-Panther Valley, and Lake Mohawk.
This includes Interstate 80 in New Jersey between mile markers 10 and
18, and near mile marker 21.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4114 7471 4092 7465 4092 7500 4101 7506
TIME...MOT...LOC 1740Z 239DEG 23KT 4099 7491
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann838
WWUS51 KPHI 031757
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
157 PM EDT Sat Aug 3 2024
NJC041-031806-
/O.CAN.KPHI.SV.W.0172.000000T0000Z-240803T1815Z/
Warren NJ-
157 PM EDT Sat Aug 3 2024
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WARREN COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern and northwestern New Jersey.
LAT...LON 4114 7471 4092 7465 4093 7479 4105 7492
TIME...MOT...LOC 1756Z 257DEG 19KT 4101 7481
$$
NJC037-031815-
/O.CON.KPHI.SV.W.0172.000000T0000Z-240803T1815Z/
Sussex NJ-
157 PM EDT Sat Aug 3 2024
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR SOUTHWESTERN SUSSEX COUNTY...
At 156 PM EDT, a severe thunderstorm was located over Greendell, or
near Newton, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Newton, Hopatcong, Mount Arlington, Stanhope, Andover, Greendell, and
Lake Mohawk.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4114 7471 4092 7465 4093 7479 4105 7492
TIME...MOT...LOC 1756Z 257DEG 19KT 4101 7481
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 9:12 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester, Salem | 48 min |
| Aug 2, 9:40 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester, Salem | 4 hr |
| Aug 2, 10:31 PM EDT | Flash Flood Warning | PHI | Burlington, Camden | 4 hr |
| Aug 3, 3:17 AM EDT | Heat Advisory | PHI | Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 2 more | 17 hr |
| Aug 3, 12:20 PM EDT | Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 7 more | 9 hr |
| Aug 3, 2:05 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 55 min |
| Aug 3, 3:41 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 45 min |
| Aug 3, 5:40 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 3, 6:04 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 41 min |
| Aug 3, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 59 min |
| Aug 3, 6:31 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 74 min |
| Aug 3, 6:49 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset | 56 min |
| Aug 3, 6:52 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 3, 7:25 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 3, 7:30 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Aug 3, 7:57 PM EDT | Special Marine Warning | PHI | 63 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2024Every severe thunderstorm warning in 2024
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.