Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 101, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 3, 2020, 8:13 PM EDT for 4 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 24 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 3, 2020, 8:13 PM EDT (00:13 UTC)
- Expired
- Jul 3, 2020, 8:37 PM EDT
- In force
- 24 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Burlington County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 52 km from the middle of the area, began a volume at 00:16 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 nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.2 hours before the alert went out and 269 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
- 373 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 1952 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
668
WUUS51 KPHI 040013
SVRPHI
NJC005-019-021-023-PAC017-040100-
/O.NEW.KPHI.SV.W.0101.200704T0013Z-200704T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
813 PM EDT Fri Jul 3 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Hunterdon County in northwestern New Jersey...
Mercer County in central New Jersey...
North central Burlington County in southern New Jersey...
Southwestern Middlesex County in northern New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
* Until 900 PM EDT.
* At 812 PM EDT, a severe thunderstorm was located over New Hope, or
15 miles northwest of Trenton, moving southeast at 30 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...
Trenton, Ewing, Princeton, Florence, Doylestown, Byram, Bordentown,
Pennington, New Hope, Yardley, Newtown, Hopewell, Tullytown,
Langhorne, Stockton, Washington Crossing, Windsor,
Florence-Roebling, Plainsboro Center and Lumberville.
This includes the following highways...
New Jersey Turnpike between exits 6 and 7A.
Pennsylvania Turnpike near mile marker 359.
Interstate 195 in New Jersey between mile markers 0 and 5.
Interstate 295 in New Jersey between mile markers 52 and 76.
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.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
&&
LAT...LON 4006 7476 4034 7514 4054 7502 4040 7474
4037 7472 4038 7469 4030 7452
TIME...MOT...LOC 0012Z 306DEG 25KT 4035 7500
HAIL...0.75IN
WIND...60MPH
$$
SFJ2 follow-up statements
828
WWUS51 KPHI 040030
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
830 PM EDT Fri Jul 3 2020
NJC019-023-040038-
/O.CAN.KPHI.SV.W.0101.000000T0000Z-200704T0100Z/
Hunterdon NJ-Middlesex NJ-
830 PM EDT Fri Jul 3 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HUNTERDON AND
SOUTHWESTERN MIDDLESEX COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
southeastern Hunterdon and southwestern Middlesex Counties.
Therefore, the warning has been cancelled. A warning remains in
effect for easter Middlesex County.
LAT...LON 4024 7458 4006 7476 4026 7503 4034 7495
4034 7491
TIME...MOT...LOC 0028Z 306DEG 25KT 4028 7488
$$
NJC005-021-PAC017-040100-
/O.CON.KPHI.SV.W.0101.000000T0000Z-200704T0100Z/
Mercer NJ-Burlington NJ-Bucks PA-
830 PM EDT Fri Jul 3 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR SOUTHERN MERCER...NORTH CENTRAL BURLINGTON AND SOUTHEASTERN BUCKS
COUNTIES...
At 828 PM EDT, a severe thunderstorm was located over Washington
Crossing, or 7 miles northwest of Trenton, moving southeast at 30
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...
Trenton, Ewing, Florence, Bordentown, Yardley, Newtown, Tullytown,
Langhorne, Washington Crossing, White Horse, Florence-Roebling,
Mercerville-Hamilton Square, Levittown, Woodside, Langhorn, Richboro,
Morrisville, Fieldsboro, Woodbourne and Yardville-Groveville.
This includes the following highways...
New Jersey Turnpike between exits 6 and 7A.
Pennsylvania Turnpike near mile marker 359.
Interstate 195 in New Jersey between mile markers 0 and 5.
Interstate 295 in New Jersey between mile markers 52 and 66, and
between mile markers 70 and 76.
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 4024 7458 4006 7476 4026 7503 4034 7495
4034 7491
TIME...MOT...LOC 0028Z 306DEG 25KT 4028 7488
HAIL...0.75IN
WIND...60MPH
$$
SFJ613
WWUS51 KPHI 040037
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
837 PM EDT Fri Jul 3 2020
NJC005-021-PAC017-040047-
/O.CAN.KPHI.SV.W.0101.000000T0000Z-200704T0100Z/
Mercer NJ-Burlington NJ-Bucks PA-
837 PM EDT Fri Jul 3 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MERCER...NORTH
CENTRAL BURLINGTON AND SOUTHEASTERN BUCKS COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds are
still possible with this thunderstorm.
LAT...LON 4024 7458 4006 7476 4026 7503 4034 7495
4034 7491
TIME...MOT...LOC 0036Z 306DEG 25KT 4024 7481
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 8:08 PM EDT | Special Weather Statement | PHI | Hunterdon, Mercer | 37 min |
| Jul 3, 8:19 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 41 min |
| Jul 3, 8:44 PM EDT | Special Weather Statement | PHI | Mercer | 31 min |
| Jul 3, 8:54 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jul 3, 8:59 PM EDT | Special Weather Statement | PHI | Burlington | 31 min |
| Jul 3, 9:03 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 4 hr |
| Jul 3, 9:05 PM EDT | Special Weather Statement | PHI | Monmouth | 25 min |
| Jul 3, 9:23 PM EDT | Special Weather Statement | PHI | Burlington, Camden | 52 min |
| Jul 3, 9:45 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Ocean | 60 min |
| Jul 3, 9:47 PM EDT | Special Marine Warning | PHI | 88 min | |
| Jul 3, 10:51 PM EDT | Special Marine Warning | PHI | 64 min | |
| Jul 3, 10:59 PM EDT | Special Weather Statement | PHI | Salem | 46 min |
| Jul 3, 11:12 PM EDT | Special Marine Warning | PHI | 60 min | |
| Jul 4, 3:52 AM EDT | Coastal Flood Advisory | PHI | Atlantic, Cape May, Cumberland | 20 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.