Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 139, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2021, 9:48 PM EDT for 5 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 57 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
- Jul 6, 2021, 9:48 PM EDT (01:48 UTC)
- Expired
- Jul 6, 2021, 10:45 PM EDT
- In force
- 57 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 23 km from the middle of the area, began a volume at 01:49 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 |
|---|---|---|---|
| Jul 6, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 1.8 hours before the alert went out and 156 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
- 1647 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 876 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.3
The text
As transmitted.
570
WUUS51 KPHI 070148
SVRPHI
NJC005-021-023-025-029-PAC017-070245-
/O.NEW.KPHI.SV.W.0139.210707T0148Z-210707T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
948 PM EDT Tue Jul 6 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northern Ocean County in southern New Jersey...
Southern Mercer County in central New Jersey...
Northeastern Burlington County in southern New Jersey...
Southern Monmouth County in central New Jersey...
South central Middlesex County in northern New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
* Until 1045 PM EDT.
* At 948 PM EDT, severe thunderstorms were located along a line
extending from Cranbury to Edinburg to Ewing, moving southeast at
30 mph.
HAZARD...60 mph wind gusts and half dollar 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...
Toms River, Trenton, Lakewood, Jackson, Howell, Manalapan, Ewing,
Florence, Burlington, Bristol, Manasquan, Hightstown, Point
Pleasant Beach, Bordentown, Cranbury, Lakehurst, Yardley, Newtown,
Tullytown and Allentown.
This includes the following highways...
New Jersey Turnpike between exits 6 and 8A.
Pennsylvania Turnpike between mile markers 353 and 359.
Interstate 95 in Pennsylvania between mile markers 38 and 40.
Interstate 195 in New Jersey between mile markers 0 and 33.
Interstate 295 in New Jersey between mile markers 49 and 67, and
between mile markers 73 and 76.
Garden State Parkway between mile markers 83 and 97.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms are producing large hail. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows!
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 4013 7402 3997 7405 3996 7434 4007 7491
4033 7509 4028 7472 4032 7448
TIME...MOT...LOC 0148Z 296DEG 27KT 4031 7451 4024 7462 4028 7478
HAIL...1.25IN
WIND...60MPH
$$
Staarmann1 follow-up statement
569
WWUS51 KPHI 070217
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1017 PM EDT Tue Jul 6 2021
NJC005-021-023-025-029-PAC017-070245-
/O.CON.KPHI.SV.W.0139.000000T0000Z-210707T0245Z/
Ocean NJ-Mercer NJ-Burlington NJ-Monmouth NJ-Middlesex NJ-Bucks PA-
1017 PM EDT Tue Jul 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR NORTHERN OCEAN...SOUTHERN MERCER...NORTHEASTERN BURLINGTON...
SOUTHERN MONMOUTH...SOUTH CENTRAL MIDDLESEX AND EAST CENTRAL BUCKS
COUNTIES...
At 1017 PM EDT, severe thunderstorms were located along a line
extending from near Allenwood to near Jacksons Mills to Columbus,
moving southeast at 30 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...
Toms River, Trenton, Lakewood, Jackson, Howell, Manalapan, Ewing,
Florence, Manasquan, Hightstown, Point Pleasant Beach, Bordentown,
Cranbury, Lakehurst, Yardley, Tullytown, Allentown, Farmingdale,
Roosevelt and Wrightstown.
This includes the following highways...
New Jersey Turnpike between exits 6 and 8A.
Interstate 195 in New Jersey between mile markers 0 and 33.
Interstate 295 in New Jersey between mile markers 50 and 67, and
between mile markers 73 and 76.
Garden State Parkway between mile markers 83 and 97.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms are producing large hail. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows.
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 3997 7405 3996 7434 4005 7481 4030 7486
4028 7472 4032 7448 4013 7402
TIME...MOT...LOC 0217Z 295DEG 28KT 4017 7413 4012 7435 4008 7470
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 |
|---|---|---|---|---|
| Jul 6, 8:03 PM EDT | Special Weather Statement | PHI | Burlington, Ocean | 42 min |
| Jul 6, 8:11 PM EDT | Special Marine Warning | PHI | 82 min | |
| Jul 6, 8:24 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jul 6, 8:29 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 46 min |
| Jul 6, 8:37 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Monmouth, Morris, Somerset | 53 min |
| Jul 6, 8:50 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 40 min |
| Jul 6, 9:04 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 41 min |
| Jul 6, 9:10 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset and 1 more | 2 hr |
| Jul 6, 9:29 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset | 61 min |
| Jul 6, 9:37 PM EDT | Special Marine Warning | PHI | 113 min | |
| Jul 6, 10:21 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 39 min |
| Jul 6, 10:50 PM EDT | Areal Flood Advisory | PHI | Monmouth, Ocean | 2 hr |
| Jul 6, 10:54 PM EDT | Special Weather Statement | PHI | Burlington | 51 min |
| Jul 6, 11:11 PM EDT | Special Weather Statement | PHI | Burlington | 19 min |
| Jul 6, 11:30 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Ocean | 45 min |
| Jul 6, 11:39 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jul 6, 11:55 PM EDT | Special Weather Statement | PHI | Monmouth | 50 min |
| Jul 7, 12:01 AM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth | 71 min |
| Jul 7, 12:10 AM EDT | Special Marine Warning | PHI | 95 min | |
| Jul 7, 11:19 AM EDT | Tropical Storm Watch | PHI | Atlantic, Burlington, Cape May, Monmouth, Ocean | 18 hr |
| Jul 7, 3:32 PM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 42 hr |
| Jul 6, 8:16 PM EDT | Special Weather Statement | PHI | Lehigh | 29 min |
| Jul 6, 10:08 PM EDT | Special Weather Statement | PHI | Philadelphia | 37 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2021Severe Thunderstorm Warnings in Pennsylvania, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.