Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 170, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 22, 2020, 6:12 PM EDT for 4 counties in New Jersey. It was in force for 48 min. 3 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
- Jul 22, 2020, 6:12 PM EDT (22:12 UTC)
- Expired
- Jul 22, 2020, 7:00 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 22:13 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 |
|---|---|---|---|
| Jul 22, 6:15 PM EDT | MARINE TSTM WIND 50 | 4 Ssw Elsinboro Twp, NJ | LOWER ALLOWAYS CREEK, NJ MESONET STATION. |
| Jul 22, 6:25 PM EDT | TSTM WND GST 59 | 4 Ssw Elsinboro Twp, NJ | LOWER ALLOWAYS CREEK, NJ MESONET STATION. |
| Jul 22, 6:25 PM EDT | MARINE TSTM WIND 59 | 4 Ssw Elsinboro Twp, NJ | LOWER ALLOWAYS CREEK, NJ MESONET STATION. |
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 |
|---|---|---|---|
| Jul 22, 2:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.2 hours before the alert went out and 209 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
- 248 J/kg
- Mixed-layer CIN
- -214 J/kg
- Mixed-layer LCL
- 1163 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
563
WUUS51 KPHI 222212
SVRPHI
NJC005-007-015-033-222300-
/O.NEW.KPHI.SV.W.0170.200722T2212Z-200722T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
612 PM EDT Wed Jul 22 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Salem County in southern New Jersey...
Northwestern Camden County in southern New Jersey...
Gloucester County in southern New Jersey...
Northwestern Burlington County in southern New Jersey...
* Until 700 PM EDT.
* At 612 PM EDT, severe thunderstorms were located along a line
extending from near Holmesburg to National Park to near Saint
Georges, moving east at 20 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Philadelphia, Camden, Wilmington, Gloucester City, Cherry Hill,
Evesham, Mount Laurel, Willingboro, Deptford, Voorhees, Medford,
West Deptford, Glassboro, Lindenwold, Pennsville, Lumberton,
Florence, Bellmawr, Woodbury and Burlington.
This includes the following highways...
New Jersey Turnpike between exits 1 and 7A.
Pennsylvania Turnpike near mile marker 359.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 295 in New Jersey between mile markers 0 and 56.
Interstate 676 in New Jersey between mile markers 0 and 4.
Atlantic City Expressway between mile markers 41 and 44.
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.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3987 7481 3944 7547 3950 7558 3956 7557
3960 7561 3963 7561 3967 7555 3972 7553
3972 7548 3981 7540 3985 7533 3985 7525
3988 7515 3996 7513 4007 7494 4008 7487
4013 7482 4013 7463
TIME...MOT...LOC 2212Z 270DEG 19KT 4007 7505 3987 7522 3959 7565
HAIL...0.75IN
WIND...60MPH
$$
MPS2 follow-up statements
402
WWUS51 KPHI 222249
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
649 PM EDT Wed Jul 22 2020
NJC005-007-015-033-222300-
/O.CON.KPHI.SV.W.0170.000000T0000Z-200722T2300Z/
Salem NJ-Camden NJ-Gloucester NJ-Burlington NJ-
649 PM EDT Wed Jul 22 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR CENTRAL SALEM...NORTHWESTERN CAMDEN...CENTRAL GLOUCESTER AND
NORTHWESTERN BURLINGTON COUNTIES...
At 648 PM EDT, severe thunderstorms were located along a line
extending from near Burlington to Springdale to near Quinton, moving
east at 20 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Cherry Hill, Evesham, Mount Laurel, Willingboro, Voorhees, Medford,
Glassboro, Lindenwold, Lumberton, Florence, Burlington, Bristol,
Mount Holly, Pitman, Clayton, Berlin, Salem, Magnolia, Woodstown and
Alloway.
This includes the following highways...
New Jersey Turnpike between exits 4 and 7A.
Pennsylvania Turnpike near mile marker 359.
Interstate 295 in New Jersey between mile markers 31 and 56.
Atlantic City Expressway between mile markers 41 and 44.
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.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3987 7481 3950 7537 3954 7556 3986 7506
4012 7483 4013 7474 4013 7463
TIME...MOT...LOC 2248Z 270DEG 19KT 4007 7481 3987 7498 3959 7541
HAIL...0.75IN
WIND...60MPH
$$
MPS103
WWUS51 KPHI 222254
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
654 PM EDT Wed Jul 22 2020
NJC005-007-015-033-222303-
/O.EXP.KPHI.SV.W.0170.000000T0000Z-200722T2300Z/
Salem NJ-Camden NJ-Gloucester NJ-Burlington NJ-
654 PM EDT Wed Jul 22 2020
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SALEM...NORTHWESTERN
CAMDEN...CENTRAL GLOUCESTER AND NORTHWESTERN BURLINGTON COUNTIES WILL
EXPIRE AT 700 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southern New Jersey...and southeastern Pennsylvania.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
Remember, a Severe Thunderstorm Warning still remains in effect for
portions of Salem, Gloucester, and Camden counties until 7:30 pm.
LAT...LON 3987 7481 3950 7537 3954 7556 3986 7506
4012 7483 4013 7474 4013 7463
TIME...MOT...LOC 2253Z 270DEG 19KT 4007 7478 3987 7495 3959 7538
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 10:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Jul 22, 2:10 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 50 min |
| Jul 22, 3:04 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 30 min |
| Jul 22, 3:18 PM EDT | Special Weather Statement | PHI | Morris, Warren | 42 min |
| Jul 22, 3:50 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 29 min |
| Jul 22, 4:33 PM EDT | Special Weather Statement | PHI | Morris | 57 min |
| Jul 22, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset | 49 min |
| Jul 22, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Sussex, Warren | 59 min |
| Jul 22, 5:23 PM EDT | Areal Flood Advisory | PHI | Warren | 3 hr |
| Jul 22, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester | 57 min |
| Jul 22, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Hunterdon, Mercer, Somerset | 65 min |
| Jul 22, 5:49 PM EDT | Special Marine Warning | PHI | 86 min | |
| Jul 22, 5:54 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 51 min |
| Jul 22, 6:04 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren | 60 min |
| Jul 22, 6:17 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset | 52 min |
| Jul 22, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem | 44 min |
| Jul 22, 6:47 PM EDT | Special Marine Warning | PHI | 28 min | |
| Jul 22, 6:52 PM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 113 min |
| Jul 22, 6:52 PM EDT | Special Marine Warning | PHI | 41 min | |
| Jul 22, 7:20 PM EDT | Special Marine Warning | PHI | 55 min | |
| Jul 22, 7:23 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more | 52 min |
| Jul 22, 7:58 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Ocean | 47 min |
| Jul 22, 7:59 PM EDT | Special Marine Warning | PHI | 61 min |
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.