Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 118, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2021, 11:40 PM EDT for 4 counties in New Jersey. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2021, 11:40 PM EDT (03:40 UTC)
- Expired
- Jul 2, 2021, 12:19 AM EDT
- In force
- 39 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Philadelphia radar (KDIX), 62 km from the middle of the area, began a volume at 03:45 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.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 3.7 hours before the alert went out and 184 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
- 183 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1139 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -82 m²/s²
- 0-3 km storm-relative helicity
- -83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
320
WUUS51 KPHI 020340
SVRPHI
NJC001-011-015-033-020430-
/O.NEW.KPHI.SV.W.0118.210702T0340Z-210702T0430Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1140 PM EDT Thu Jul 1 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Atlantic County in southern New Jersey...
Northeastern Cumberland County in southern New Jersey...
East central Salem County in southern New Jersey...
Southeastern Gloucester County in southern New Jersey...
* Until 1230 AM EDT.
* At 1139 PM EDT, a severe thunderstorm was located over Seabrook
Farms, or near Bridgeton, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Vineland, Millville, Bridgeton, Hammonton, Buena, Weymouth, Estell
Manor, Newfield, Elmer, Mays Landing, Elwood-Magnolia, Olivet,
Malaga, Mizpah, Seabrook Farms, South Vineland, Rosenhayn, Folsom,
Collings Lakes and Centerton.
This includes Atlantic City Expressway between mile markers 18 and
28.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3942 7469 3942 7527 3957 7530 3962 7488
3961 7487 3962 7486 3964 7468
TIME...MOT...LOC 0339Z 268DEG 29KT 3950 7518
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
JEO3 follow-up statements
544
WWUS51 KPHI 020351
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1151 PM EDT Thu Jul 1 2021
NJC001-011-015-033-020430-
/O.CON.KPHI.SV.W.0118.000000T0000Z-210702T0430Z/
Atlantic NJ-Cumberland NJ-Salem NJ-Gloucester NJ-
1151 PM EDT Thu Jul 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT
FOR NORTHWESTERN ATLANTIC...NORTHEASTERN CUMBERLAND...EAST CENTRAL
SALEM AND SOUTHEASTERN GLOUCESTER COUNTIES...
At 1151 PM EDT, a severe thunderstorm was located near Newfield, or
near Vineland, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Vineland, Millville, Hammonton, Buena, Weymouth, Estell Manor,
Newfield, Mays Landing, Elwood-Magnolia, Malaga, Mizpah, South
Vineland, Rosenhayn, Folsom and Collings Lakes.
This includes Atlantic City Expressway between mile markers 18 and
28.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3942 7469 3942 7511 3959 7514 3962 7489
3961 7487 3962 7486 3964 7468
TIME...MOT...LOC 0351Z 268DEG 29KT 3950 7505
HAIL...<.75IN
WIND...60MPH
$$
JEO901
WWUS51 KPHI 020408
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1208 AM EDT Fri Jul 2 2021
NJC033-020418-
/O.CAN.KPHI.SV.W.0118.000000T0000Z-210702T0430Z/
Salem NJ-
1208 AM EDT Fri Jul 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SALEM COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3942 7469 3942 7491 3961 7497 3962 7489
3961 7487 3962 7486 3964 7468
TIME...MOT...LOC 0408Z 268DEG 29KT 3950 7487
$$
NJC001-011-015-020430-
/O.CON.KPHI.SV.W.0118.000000T0000Z-210702T0430Z/
Atlantic NJ-Cumberland NJ-Gloucester NJ-
1208 AM EDT Fri Jul 2 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT
FOR NORTHWESTERN ATLANTIC...EAST CENTRAL CUMBERLAND AND SOUTHEASTERN
GLOUCESTER COUNTIES...
At 1208 AM EDT, a severe thunderstorm was located over Mizpah, or 7
miles east of Vineland, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Vineland, Hammonton, Buena, Weymouth, Estell Manor, Mays Landing,
Elwood-Magnolia, Mizpah, Folsom and Collings Lakes.
This includes Atlantic City Expressway between mile markers 18 and
28.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3942 7469 3942 7491 3961 7497 3962 7489
3961 7487 3962 7486 3964 7468
TIME...MOT...LOC 0408Z 268DEG 29KT 3950 7487
HAIL...<.75IN
WIND...60MPH
$$
JEO690
WWUS51 KPHI 020419
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1219 AM EDT Fri Jul 2 2021
NJC001-011-015-020429-
/O.CAN.KPHI.SV.W.0118.000000T0000Z-210702T0430Z/
Atlantic NJ-Cumberland NJ-Gloucester NJ-
1219 AM EDT Fri Jul 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ATLANTIC...EAST
CENTRAL CUMBERLAND AND SOUTHEASTERN GLOUCESTER COUNTIES IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.
LAT...LON 3942 7469 3942 7491 3961 7497 3962 7489
3961 7487 3962 7486 3964 7468
TIME...MOT...LOC 0418Z 268DEG 29KT 3950 7476
$$
JEOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 11:31 PM EDT | Special Weather Statement | PHI | Salem | 29 min |
| Jul 2, 4:31 AM EDT | Areal Flood Warning | PHI | Cumberland | 6 hr |
| Jul 2, 10:40 AM EDT | Areal Flood Warning | PHI | Cumberland | 6 hr |
| Jul 2, 11:16 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 119 min |
| Jul 2, 12:12 PM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 97 min |
| Jul 2, 1:11 PM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 59 min |
| Jul 2, 1:47 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean, Salem | 116 min |
| Jul 2, 3:48 PM EDT | Small Craft Advisory | PHI | 31 hr | |
| Jul 2, 4:47 PM EDT | Special Weather Statement | PHI | Sussex | 28 min |
| Jul 2, 6:42 PM EDT | Special Weather Statement | PHI | Warren | 48 min |
| Jul 2, 6:53 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 52 min |
| Jul 2, 7:25 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 50 min |
| Jul 2, 7:33 PM EDT | Special Weather Statement | PHI | Cumberland | 42 min |
| Jul 2, 7:41 PM EDT | Flash Flood Warning | PHI | Burlington, Camden | 3 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2021Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.