Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 224, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 7, 2020, 8:02 PM EDT for 7 counties in New Jersey. It was in force for 73 min. 2 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 7, 2020, 8:02 PM EDT (00:02 UTC)
- Expired
- Aug 7, 2020, 9:15 PM EDT
- In force
- 73 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ
The radar
The Dover AFB radar (KDOX), 73 km from the middle of the area, began a volume at 00:05 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 7, 8:50 PM EDT | TSTM WND DMG | 1 Ene Seaville, NJ | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 ENE SEAVILLE. TREE DOWN ON GARDEN STATE PARKWAY NEAR MILE MARKER 21.9. TIME ESTIMATED BY RADAR. |
| Aug 7, 9:18 PM EDT | TSTM WND DMG | 1 Ene Seaville, NJ | TREE DOWN ON GARDEN STATE PARKWAY NEAR MILE MARKER 21.9. |
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 00:00Z, 0.0 hours before the alert went out and 162 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
- 609 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 896 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted.
474
WUUS51 KPHI 080002
SVRPHI
NJC001-005-007-009-011-015-029-080115-
/O.NEW.KPHI.SV.W.0224.200808T0002Z-200808T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
802 PM EDT Fri Aug 7 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Atlantic County in southern New Jersey...
Cumberland County in southern New Jersey...
Southeastern Ocean County in southern New Jersey...
Southeastern Camden County in southern New Jersey...
Southeastern Gloucester County in southern New Jersey...
Cape May County in southern New Jersey...
Southeastern Burlington County in southern New Jersey...
* Until 915 PM EDT.
* At 802 PM EDT, severe thunderstorms were located along a line
extending from Hammonton to near Estell Manor to near Fortesque,
moving southeast at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Vineland, Atlantic City, Millville, Ocean City, Cape May,
Cumberland, Pleasantville, Hammonton, Somers Point, Ventnor City,
Brigantine, Northfield, Absecon, Margate City, Buena, Egg Harbor
City, North Wildwood, Laurel Lake, Tuckerton and Wildwood Crest.
This includes the following highways...
Garden State Parkway between mile markers 0 and 62.
Atlantic City Expressway between mile markers 0 and 34.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
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, and
the storm will affect the beaches. For your safety, immediately move
off the beach and seek shelter indoors.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3883 7490 3932 7535 3947 7510 3946 7508
3974 7487 3967 7405
TIME...MOT...LOC 0002Z 302DEG 20KT 3963 7477 3933 7480 3918 7512
HAIL...<.75IN
WIND...60MPH
$$
Robertson2 follow-up statements
369
WWUS51 KPHI 080030
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
830 PM EDT Fri Aug 7 2020
NJC007-015-080039-
/O.CAN.KPHI.SV.W.0224.000000T0000Z-200808T0115Z/
Camden NJ-Gloucester NJ-
830 PM EDT Fri Aug 7 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CAMDEN AND
SOUTHEASTERN GLOUCESTER COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3883 7490 3928 7531 3942 7496 3966 7478
3956 7416
TIME...MOT...LOC 0029Z 302DEG 20KT 3956 7462 3926 7465 3911 7497
$$
NJC001-005-009-011-029-080115-
/O.CON.KPHI.SV.W.0224.000000T0000Z-200808T0115Z/
Atlantic NJ-Cumberland NJ-Ocean NJ-Cape May NJ-Burlington NJ-
830 PM EDT Fri Aug 7 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR ATLANTIC...SOUTHEASTERN CUMBERLAND...SOUTH CENTRAL OCEAN...CAPE
MAY AND SOUTHEASTERN BURLINGTON COUNTIES...
At 829 PM EDT, severe thunderstorms were located along a line
extending from Egg Harbor City to Marmora to near Green Creek, moving
southeast at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Vineland, Atlantic City, Millville, Ocean City, Cape May, Cumberland,
Pleasantville, Hammonton, Somers Point, Ventnor City, Brigantine,
Northfield, Absecon, Margate City, Egg Harbor City, North Wildwood,
Laurel Lake, Tuckerton, Wildwood Crest and Weymouth.
This includes the following highways...
Garden State Parkway between mile markers 0 and 52.
Atlantic City Expressway between mile markers 0 and 27.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3883 7490 3928 7531 3942 7496 3966 7478
3956 7416
TIME...MOT...LOC 0029Z 302DEG 20KT 3956 7462 3926 7465 3911 7497
HAIL...<.75IN
WIND...60MPH
$$
Robertson029
WWUS51 KPHI 080049
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
849 PM EDT Fri Aug 7 2020
NJC011-080059-
/O.CAN.KPHI.SV.W.0224.000000T0000Z-200808T0115Z/
Cumberland NJ-
849 PM EDT Fri Aug 7 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CUMBERLAND COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3884 7490 3907 7509 3919 7494 3917 7492
3918 7491 3919 7492 3920 7492 3930 7479
3961 7458 3956 7416
TIME...MOT...LOC 0049Z 298DEG 15KT 3945 7449 3924 7465 3900 7503
$$
NJC001-005-009-029-080115-
/O.CON.KPHI.SV.W.0224.000000T0000Z-200808T0115Z/
Atlantic NJ-Ocean NJ-Cape May NJ-Burlington NJ-
849 PM EDT Fri Aug 7 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR SOUTHEASTERN ATLANTIC...SOUTH CENTRAL OCEAN...CAPE MAY AND
SOUTHEASTERN BURLINGTON COUNTIES...
At 849 PM EDT, severe thunderstorms were located along a line
extending from near Absecon to near Marmora to near North Cape May,
moving southeast at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Atlantic City, Ocean City, Cape May, Pleasantville, Somers Point,
Ventnor City, Brigantine, Northfield, Absecon, Margate City, Egg
Harbor City, North Wildwood, Tuckerton, Wildwood Crest, Woodbine, Sea
Isle City, Estell Manor, Avalon, Port Republic and West Cape May.
This includes the following highways...
Garden State Parkway between mile markers 0 and 51.
Atlantic City Expressway between mile markers 0 and 15.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3884 7490 3907 7509 3919 7494 3917 7492
3918 7491 3919 7492 3920 7492 3930 7479
3961 7458 3956 7416
TIME...MOT...LOC 0049Z 298DEG 15KT 3945 7449 3924 7465 3900 7503
HAIL...<.75IN
WIND...60MPH
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 8:23 PM EDT | Special Marine Warning | PHI | 97 min | |
| Aug 7, 9:17 PM EDT | Special Weather Statement | PHI | Atlantic | 28 min |
| Aug 7, 9:37 PM EDT | Areal Flood Warning | PHI | Salem | 7 hr |
| Aug 7, 9:54 PM EDT | Special Marine Warning | PHI | 42 min | |
| Aug 8, 11:38 AM EDT | Areal Flood Warning | PHI | Cumberland, Salem | 3 hr |
| Aug 8, 7:44 PM EDT | Areal Flood Warning | PHI | Cumberland, Salem | 41 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2020Every severe thunderstorm warning in 2020
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.