Alert archive / New Jersey / Tornado Warnings in 2020
Tornado Warning 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at Aug 4, 2020, 9:16 AM EDT for Cumberland County, New Jersey. It was in force for 18 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
- Aug 4, 2020, 9:16 AM EDT (13:16 UTC)
- Expired
- Aug 4, 2020, 9:34 AM EDT
- In force
- 18 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
County Cumberland County, NJ
The radar
The Dover AFB radar (KDOX), 64 km from the middle of the area, began a volume at 13:19 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 4, 2:26 AM EDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 1.3 hours before the alert went out and 160 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
- 472 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 254 m²/s²
- 0-3 km storm-relative helicity
- 273 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 2.9
The text
As transmitted.
507
WFUS51 KPHI 041316
TORPHI
NJC011-041345-
/O.NEW.KPHI.TO.W.0021.200804T1316Z-200804T1345Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
916 AM EDT Tue Aug 4 2020
The National Weather Service in Mount Holly NJ has issued a
* Tornado Warning for...
Central Cumberland County in southern New Jersey...
* Until 945 AM EDT.
* At 916 AM EDT, a severe thunderstorm capable of producing a tornado
was located near Fortesque, or 13 miles south of Millville, moving
north at 60 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Vineland, Millville, Bridgeton, Laurel Lake, Greenwich, Shiloh,
Newport, Port Norris, Dividing Creek, Fairton, Cedarville,
Fortesque and Rosenhayn.
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.
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3913 7517 3945 7538 3947 7536 3948 7511
3946 7508 3947 7508 3948 7506 3916 7503
TIME...MOT...LOC 1316Z 162DEG 51KT 3920 7513
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
Gorse2 follow-up statements
433
WWUS51 KPHI 041325
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
925 AM EDT Tue Aug 4 2020
NJC011-041345-
/O.CON.KPHI.TO.W.0021.000000T0000Z-200804T1345Z/
Cumberland NJ-
925 AM EDT Tue Aug 4 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM EDT FOR WESTERN
CUMBERLAND COUNTY...
At 924 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Newport, or 8 miles south of Bridgeton, moving north
at 60 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Millville, Bridgeton, Greenwich, Shiloh, Newport, Fairton,
Cedarville, Dividing Creek and Rosenhayn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3945 7538 3947 7536 3948 7511 3926 7507
3924 7524
TIME...MOT...LOC 1324Z 162DEG 51KT 3932 7518
TORNADO...RADAR INDICATED
HAIL...0.00IN
$$
SFJ988
WWUS51 KPHI 041334
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
934 AM EDT Tue Aug 4 2020
NJC011-041344-
/O.CAN.KPHI.TO.W.0021.000000T0000Z-200804T1345Z/
Cumberland NJ-
934 AM EDT Tue Aug 4 2020
...THE TORNADO WARNING FOR WESTERN CUMBERLAND COUNTY IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until noon EDT for southern New
Jersey.
LAT...LON 3945 7538 3947 7536 3948 7511 3926 7507
3924 7524
TIME...MOT...LOC 1331Z 162DEG 51KT 3946 7524
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 8:07 PM EDT | Special Weather Statement | PHI | Hunterdon, Somerset, Warren | 23 min |
| Aug 3, 8:26 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 34 min |
| Aug 3, 9:02 PM EDT | Special Weather Statement | PHI | Morris | 28 min |
| Aug 4, 5:17 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Salem and 1 more | 4 hr |
| Aug 4, 5:55 AM EDT | Special Marine Warning | PHI | 21 min | |
| Aug 4, 7:28 AM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 3 hr |
| Aug 4, 8:38 AM EDT | Special Marine Warning | PHI | 52 min | |
| Aug 4, 9:28 AM EDT | Special Marine Warning | PHI | 32 min | |
| Aug 4, 9:31 AM EDT | Special Marine Warning | PHI | 59 min | |
| Aug 4, 9:42 AM EDT | Tornado Warning | PHI | Atlantic, Cape May | 19 min |
| Aug 4, 10:02 AM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 4 hr |
| Aug 4, 10:15 AM EDT | Tornado Warning | PHI | Atlantic, Burlington, Ocean | 14 min |
| Aug 4, 10:20 AM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester | 4 hr |
| Aug 4, 11:00 AM EDT | Tornado Warning | PHI | Monmouth, Ocean | 11 min |
| Aug 4, 11:01 AM EDT | Flash Flood Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more | 4 hr |
| Aug 4, 11:13 AM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 4 hr |
| Aug 4, 11:43 AM EDT | Flash Flood Warning | PHI | Warren | 4 hr |
| Aug 4, 11:59 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Middlesex, Monmouth, Morris, Somerset | 4 hr |
| Aug 4, 2:33 PM EDT | River Flood Warning | PHI | Hunterdon, Somerset | 5 hr |
| Aug 4, 2:47 PM EDT | Areal Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset, Warren | 9 hr |
| Aug 4, 3:42 PM EDT | Areal Flood Warning | PHI | Warren | 4 hr |
| Aug 4, 4:37 PM EDT | Areal Flood Warning | PHI | Cumberland, Salem | 10 hr |
| Aug 4, 5:04 PM EDT | Small Craft Advisory | PHI | 14 hr | |
| Aug 4, 5:30 PM EDT | Coastal Flood Statement | PHI | Ocean | 103 min |
Nearby
Tornado Warnings in New Jersey, 2020Every tornado warning in 2020Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.