Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 66, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 8, 2021, 5:30 PM EDT for 6 counties in New Jersey. It was in force for 45 min. 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
- Jun 8, 2021, 5:30 PM EDT (21:30 UTC)
- Expired
- Jun 8, 2021, 6:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Philadelphia radar (KDIX), 48 km from the middle of the area, began a volume at 21:31 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 |
|---|---|---|---|
| Jun 8, 5:50 PM EDT | TSTM WND DMG | 1 Ne Folsom, NJ | DOWNED TREE ON THE ATLANTIC CITY EXPRESSWAY WB ENTRANCE RAMP. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.5 hours before the alert went out and 200 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
- 152 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 1181 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -51 m²/s²
- 0-3 km storm-relative helicity
- -38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
328
WUUS51 KPHI 082130
SVRPHI
NJC001-005-007-011-015-033-082215-
/O.NEW.KPHI.SV.W.0066.210608T2130Z-210608T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
530 PM EDT Tue Jun 8 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...
Southern Camden County in southern New Jersey...
Southeastern Gloucester County in southern New Jersey...
Southern Burlington County in southern New Jersey...
* Until 615 PM EDT.
* At 530 PM EDT, severe thunderstorms were located along a line
extending from Batsto to near Hammonton to near Elmer, moving east
at 20 mph. This storm has a history of producing quarter sized
hail.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Public.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
Vineland, Millville, Bridgeton, Glassboro, Lindenwold, Hammonton,
Pitman, Clayton, Berlin, Tabernacle, Shamong, Buena, Chesilhurst,
Newfield, Elmer, Franklinville, Sicklerville, Elwood-Magnolia,
Atsion and Atco.
This includes Atlantic City Expressway between mile markers 22 and
44.
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 these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3978 7453 3965 7447 3944 7505 3942 7524
3966 7528 3983 7501 3987 7466
TIME...MOT...LOC 2130Z 264DEG 17KT 3966 7465 3966 7485 3962 7514
HAIL...1.00IN
WIND...60MPH
$$
Staarmann2 follow-up statements
736
WWUS51 KPHI 082157
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
557 PM EDT Tue Jun 8 2021
NJC001-005-007-011-015-033-082215-
/O.CON.KPHI.SV.W.0066.000000T0000Z-210608T2215Z/
Atlantic NJ-Cumberland NJ-Salem NJ-Camden NJ-Gloucester NJ-
Burlington NJ-
557 PM EDT Tue Jun 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTHWESTERN ATLANTIC...NORTHEASTERN CUMBERLAND...EAST CENTRAL
SALEM...SOUTHEASTERN CAMDEN...SOUTHEASTERN GLOUCESTER AND
SOUTHEASTERN BURLINGTON COUNTIES...
At 556 PM EDT, severe thunderstorms with a history of producing
quarter sized hail were located along a line extending from near
Batsto to near Wharton State Forest to near Newfield, moving east at
20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Public.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Vineland, Millville, Bridgeton, Hammonton, Clayton, Berlin,
Tabernacle, Shamong, Buena, Chesilhurst, Newfield, Franklinville,
Sicklerville, Elwood-Magnolia, Atsion, Atco, Victory Lakes, Wharton
State Forest, Williamstown and Olivet.
This includes Atlantic City Expressway between mile markers 22 and
39.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3978 7453 3965 7447 3944 7505 3942 7524
3954 7519 3975 7498 3985 7481 3987 7466
TIME...MOT...LOC 2156Z 256DEG 18KT 3969 7456 3975 7467 3950 7506
HAIL...1.00IN
WIND...60MPH
$$
Staarmann658
WWUS51 KPHI 082207
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
607 PM EDT Tue Jun 8 2021
NJC011-015-033-082216-
/O.CAN.KPHI.SV.W.0066.000000T0000Z-210608T2215Z/
Cumberland NJ-Salem NJ-Gloucester NJ-
607 PM EDT Tue Jun 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CUMBERLAND...EAST
CENTRAL SALEM AND SOUTHEASTERN GLOUCESTER COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened and moved out of
the warned area. Therefore, the warning has been cancelled. However,
gusty winds, small hail, and heavy rain will still be possible.
LAT...LON 3978 7453 3965 7447 3955 7475 3982 7482
3987 7466
TIME...MOT...LOC 2206Z 264DEG 17KT 3972 7457 3978 7468
$$
NJC001-005-007-082215-
/O.CON.KPHI.SV.W.0066.000000T0000Z-210608T2215Z/
Atlantic NJ-Camden NJ-Burlington NJ-
607 PM EDT Tue Jun 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTH CENTRAL ATLANTIC...EAST CENTRAL CAMDEN AND SOUTHEASTERN
BURLINGTON COUNTIES...
At 606 PM EDT, severe thunderstorms were located along a line
extending from near Wharton State Forest to Shamong, moving east at
20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Hammonton, Tabernacle, Shamong, Batsto, Wharton State Forest,
Elwood-Magnolia and Atsion.
This includes Atlantic City Expressway near mile marker 22.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3978 7453 3965 7447 3955 7475 3982 7482
3987 7466
TIME...MOT...LOC 2206Z 264DEG 17KT 3972 7457 3978 7468
HAIL...1.00IN
WIND...60MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 1:27 PM EDT | Areal Flood Advisory | PHI | Warren | 3 hr |
| Jun 8, 1:49 PM EDT | Special Weather Statement | PHI | Warren | 26 min |
| Jun 8, 1:54 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 95 min |
| Jun 8, 2:19 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer | 2 hr |
| Jun 8, 2:29 PM EDT | Special Weather Statement | PHI | Morris | 16 min |
| Jun 8, 2:48 PM EDT | Special Weather Statement | PHI | Hunterdon, Morris, Somerset | 27 min |
| Jun 8, 3:13 PM EDT | Special Weather Statement | PHI | Hunterdon, Somerset | 32 min |
| Jun 8, 3:14 PM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 74 min |
| Jun 8, 4:12 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 48 min |
| Jun 8, 4:14 PM EDT | Special Marine Warning | PHI | 91 min | |
| Jun 8, 4:44 PM EDT | Special Weather Statement | PHI | Salem | 31 min |
| Jun 8, 4:47 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 43 min |
| Jun 8, 4:54 PM EDT | Special Marine Warning | PHI | 96 min | |
| Jun 8, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Gloucester | 49 min |
| Jun 8, 4:58 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 47 min |
| Jun 8, 5:43 PM EDT | Special Weather Statement | PHI | Ocean | 32 min |
| Jun 8, 6:01 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 44 min |
| Jun 8, 6:22 PM EDT | Special Marine Warning | PHI | 83 min | |
| Jun 8, 7:39 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jun 8, 7:52 PM EDT | Special Weather Statement | PHI | Cape May | 38 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.