Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 188, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 30, 2020, 11:35 PM EDT for 6 counties in New Jersey; Bucks County, Philadelphia County, Pennsylvania. It was in force for 40 min. 6 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 30, 2020, 11:35 PM EDT (03:35 UTC)
- Expired
- Jul 31, 2020, 12:15 AM EDT
- In force
- 40 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, Mercer County, NJ, Monmouth County, NJ, Ocean County, NJ, Bucks County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 35 km from the middle of the area, began a volume at 03:36 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 30, 11:37 PM EDT | TSTM WND DMG | 1 E Delran, NJ | WIRES DOWN NEAR CREEK ROAD. TIME ESTIMATED FROM RADAR. |
| Jul 30, 11:46 PM EDT | TSTM WND DMG | Burlington, NJ | WIRES DOWN NEAR WOOD STREET IN BURLINGTON. TIME ESTIMATED FROM RADAR. |
| Jul 30, 11:46 PM EDT | TSTM WND GST 58 | 1 Wnw Burlington, NJ | OBSERVED ON THE BRISTOL BRIDGE. |
| Jul 30, 11:50 PM EDT | TSTM WND DMG | 1 Wsw Roebling, NJ | WIRES DOWN ON HAMILTON STREET. TIME ESTIMATED FROM RADAR. |
| Jul 30, 11:51 PM EDT | TSTM WND DMG | 2 Nw Columbus, NJ | WIRES DOWN NEAR JACKSONVILLE ROAD AND MILL LANE. TIME ESTIMATED FROM RADAR. |
| Jul 30, 11:58 PM EDT | TSTM WND DMG | 1 Nne Bordentown, NJ | WIRES DOWN ON STANTON AVENUE IN BORDENTOWN. 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
Brookhaven, NY (KOKX), launched 00:00Z, 3.6 hours before the alert went out and 189 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
- 2515 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 895 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.9
The text
As transmitted.
677
WUUS51 KPHI 310335
SVRPHI
NJC001-005-007-021-025-029-PAC017-101-310415-
/O.NEW.KPHI.SV.W.0188.200731T0335Z-200731T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1135 PM EDT Thu Jul 30 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Atlantic County in southern New Jersey...
Northwestern Ocean County in southern New Jersey...
Central Camden County in southern New Jersey...
Southeastern Mercer County in central New Jersey...
Burlington County in southern New Jersey...
Southwestern Monmouth County in central New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
Northeastern Philadelphia County in southeastern Pennsylvania...
* Until 1215 AM EDT.
* At 1134 PM EDT, severe thunderstorms were located along a line
extending from Tacony to near Hammonton, moving northeast at 40
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated. Several reports of tree and power line
damage have also been received in association with this
line of storms.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Philadelphia, Trenton, Cherry Hill, Bensalem, Evesham, Mount
Laurel, Ewing, Willingboro, Voorhees, Medford, Lindenwold,
Hammonton, Lumberton, Florence, Burlington, Bristol, Mount Holly,
Riverside, Berlin and Palmyra.
This includes the following highways...
New Jersey Turnpike between exits 4 and 8.
Pennsylvania Turnpike between mile markers 351 and 359.
Interstate 95 in Pennsylvania between mile markers 27 and 40.
Interstate 195 in New Jersey between mile markers 0 and 13.
Interstate 295 in New Jersey between mile markers 33 and 67.
Atlantic City Expressway near mile marker 28.
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.
&&
LAT...LON 3961 7483 4005 7511 4006 7509 4008 7509
4010 7506 4033 7462 4033 7461 4031 7458
3980 7424
TIME...MOT...LOC 0334Z 238DEG 34KT 4004 7505 3968 7481
HAIL...<.75IN
WIND...60MPH
$$
JEO1 follow-up statement
637
WWUS51 KPHI 310402
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1202 AM EDT Fri Jul 31 2020
NJC001-310411-
/O.CAN.KPHI.SV.W.0188.000000T0000Z-200731T0415Z/
Atlantic NJ-
1202 AM EDT Fri Jul 31 2020
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ATLANTIC COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3973 7480 4010 7506 4033 7462 4033 7461
4031 7458 3991 7431
TIME...MOT...LOC 0401Z 238DEG 34KT 4017 7478 3981 7454
$$
NJC005-007-021-025-029-PAC017-101-310415-
/O.CON.KPHI.SV.W.0188.000000T0000Z-200731T0415Z/
Ocean NJ-Camden NJ-Mercer NJ-Burlington NJ-Monmouth NJ-Bucks PA-
Philadelphia PA-
1202 AM EDT Fri Jul 31 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR NORTHWESTERN OCEAN...EAST CENTRAL CAMDEN...SOUTHEASTERN MERCER...
BURLINGTON...SOUTHWESTERN MONMOUTH...SOUTHEASTERN BUCKS AND
NORTHEASTERN PHILADELPHIA COUNTIES...
At 1201 AM EDT, severe thunderstorms were located along a line
extending from near Tullytown to Chatsworth, moving northeast at 40
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated. Tree and power line damage has also been
reported with these storms.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Philadelphia, Trenton, Bensalem, Evesham, Mount Laurel, Ewing,
Willingboro, Medford, Lumberton, Florence, Burlington, Bristol, Mount
Holly, Riverside, Tabernacle, Shamong, Bordentown, Presidential Lakes
Estates, Beverly and Tullytown.
This includes the following highways...
New Jersey Turnpike between exits 5 and 8.
Pennsylvania Turnpike between mile markers 351 and 359.
Interstate 95 in Pennsylvania between mile markers 31 and 40.
Interstate 195 in New Jersey between mile markers 0 and 13.
Interstate 295 in New Jersey between mile markers 38 and 67.
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.
&&
LAT...LON 3973 7480 4010 7506 4033 7462 4033 7461
4031 7458 3991 7431
TIME...MOT...LOC 0401Z 238DEG 34KT 4017 7478 3981 7454
HAIL...<.75IN
WIND...60MPH
$$
JEOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 10:15 PM EDT | Special Marine Warning | PHI | 60 min | |
| Jul 30, 10:36 PM EDT | Special Weather Statement | PHI | Atlantic, Camden, Cumberland, Gloucester, Salem | 39 min |
| Jul 30, 11:06 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem | 39 min |
| Jul 30, 11:40 PM EDT | Special Weather Statement | PHI | Hunterdon | 50 min |
| Jul 30, 11:51 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Somerset, Warren | 54 min |
| Jul 31, 12:10 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset | 50 min |
| Jul 31, 12:21 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer | 4 hr |
| Jul 31, 12:33 AM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean and 1 more | 42 min |
| Jul 31, 12:54 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 4 hr |
| Jul 31, 1:10 AM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth, Morris, Somerset | 35 min |
| Jul 31, 1:29 AM EDT | Flash Flood Warning | PHI | Middlesex, Somerset | 4 hr |
| Jul 30, 10:11 PM EDT | Special Weather Statement | PHI | Chester, Delaware | 49 min |
| Jul 30, 10:35 PM EDT | Special Weather Statement | PHI | Delaware, Montgomery | 40 min |
| Jul 30, 10:55 PM EDT | Special Weather Statement | PHI | Delaware, Philadelphia | 50 min |
| Jul 30, 11:27 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 33 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2020Severe Thunderstorm Warnings in Pennsylvania, 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.