Alert archive / New Jersey / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 41, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 20, 2022, 3:05 PM EDT for Bucks County, Montgomery County, Pennsylvania; Hunterdon County, Mercer County, Somerset County, New Jersey. It was in force for 29 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
- May 20, 2022, 3:05 PM EDT (19:05 UTC)
- Expired
- May 20, 2022, 3:34 PM EDT
- In force
- 29 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Mercer County, NJ, Somerset County, NJ, Bucks County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 79 km from the middle of the area, began a volume at 19:05 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 |
|---|---|---|---|
| May 20, 11:35 AM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.1 hours before the alert went out and 249 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
- 1 J/kg
- Mixed-layer CIN
- -226 J/kg
- Mixed-layer LCL
- 1469 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
001
WUUS51 KPHI 201905
SVRPHI
NJC019-021-035-PAC017-091-201945-
/O.NEW.KPHI.SV.W.0041.220520T1905Z-220520T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
305 PM EDT Fri May 20 2022
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Hunterdon County in northwestern New Jersey...
Northwestern Mercer County in central New Jersey...
Southwestern Somerset County in northern New Jersey...
North central Montgomery County in southeastern Pennsylvania...
Central Bucks County in southeastern Pennsylvania...
* Until 345 PM EDT.
* At 304 PM EDT, a severe thunderstorm was located over Souderton, or
18 miles south of Allentown, moving east at 35 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...
Quakertown, Perkasie, Doylestown, Byram, Souderton, Bedminster,
Flemington, Chalfont, Tinicum, Hatfield, New Hope, Dublin,
Hopewell, Frenchtown, Stockton, Fricks, Lumberville, Ottsville,
Sergeantsville and Pipersville.
This includes Northeast Extension between mile markers 31 and 41.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM EDT for central,
northern and northwestern New Jersey...and southeastern Pennsylvania.
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.
A Tornado Watch remains in effect until 700 PM EDT for central,
northern and northwestern New Jersey...and southeastern Pennsylvania.
&&
LAT...LON 4024 7541 4040 7544 4062 7480 4036 7469
TIME...MOT...LOC 1904Z 251DEG 31KT 4034 7535
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS2 follow-up statements
690
WWUS51 KPHI 201923
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
323 PM EDT Fri May 20 2022
NJC035-PAC091-201932-
/O.CAN.KPHI.SV.W.0041.000000T0000Z-220520T1945Z/
Somerset NJ-Montgomery PA-
323 PM EDT Fri May 20 2022
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SOMERSET AND
NORTH CENTRAL MONTGOMERY COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 PM EDT for central and
northwestern New Jersey...and southeastern Pennsylvania.
LAT...LON 4027 7522 4044 7530 4052 7508 4059 7488
4035 7477
TIME...MOT...LOC 1922Z 251DEG 28KT 4038 7518
$$
NJC019-021-PAC017-201945-
/O.CON.KPHI.SV.W.0041.000000T0000Z-220520T1945Z/
Hunterdon NJ-Mercer NJ-Bucks PA-
323 PM EDT Fri May 20 2022
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR SOUTHEASTERN HUNTERDON...NORTHWESTERN MERCER AND CENTRAL BUCKS
COUNTIES...
At 322 PM EDT, a severe thunderstorm was located over Dublin, or 20
miles south of Easton, moving east at 35 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...
Doylestown, Byram, Bedminster, Flemington, Chalfont, Tinicum, New
Hope, Dublin, Frenchtown, Stockton, Ottsville, Sergeantsville,
Pipersville, Erwinna, Gardenville, Lumberville, Sand Brook,
Lambertville, New Britain and Brittany Farms-Highlands.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 700 PM EDT for central and
northwestern New Jersey...and southeastern Pennsylvania.
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.
&&
LAT...LON 4027 7522 4044 7530 4052 7508 4059 7488
4035 7477
TIME...MOT...LOC 1922Z 251DEG 28KT 4038 7518
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS242
WWUS51 KPHI 201934
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
334 PM EDT Fri May 20 2022
NJC019-021-PAC017-201943-
/O.CAN.KPHI.SV.W.0041.000000T0000Z-220520T1945Z/
Hunterdon NJ-Mercer NJ-Bucks PA-
334 PM EDT Fri May 20 2022
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HUNTERDON...
NORTHWESTERN MERCER AND CENTRAL BUCKS COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 PM EDT for central and
northwestern New Jersey...and southeastern Pennsylvania.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 4027 7522 4044 7530 4052 7508 4059 7488
4035 7477
TIME...MOT...LOC 1932Z 251DEG 31KT 4041 7505
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 3:15 AM EDT | Heat Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 59 hr |
| May 20, 1:45 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 45 min |
| May 20, 2:22 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery | 53 min |
| May 20, 2:27 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 48 min |
| May 20, 2:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 45 min |
| May 20, 2:53 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Montgomery | 52 min |
| May 20, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 31 min |
| May 20, 3:10 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery | 50 min |
| May 20, 3:25 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 50 min |
| May 20, 3:28 PM EDT | Special Weather Statement | PHI | Philadelphia | 32 min |
| May 20, 3:37 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 53 min |
| May 20, 3:41 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Montgomery, Northampton | 49 min |
| May 20, 3:52 PM EDT | Areal Flood Advisory | PHI | Bucks, Chester, Delaware, Lehigh, Montgomery, Philadelphia | 3 hr |
| May 20, 3:55 PM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more | 3 hr |
| May 20, 4:26 PM EDT | Areal Flood Advisory | PHI | Bucks, Philadelphia | 3 hr |
| May 20, 5:37 PM EDT | Areal Flood Warning | PHI | Bucks, Montgomery | 68 min |
| May 20, 12:30 PM EDT | Marine Dense Fog Advisory | PHI | 6 hr | |
| May 20, 3:48 PM EDT | Special Weather Statement | PHI | Monmouth | 27 min |
| May 20, 4:11 PM EDT | Special Weather Statement | PHI | Sussex | 34 min |
| May 20, 4:32 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex | 28 min |
| May 20, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Ocean | 42 min |
| May 20, 4:56 PM EDT | Special Weather Statement | PHI | Middlesex, Monmouth | 49 min |
| May 20, 5:11 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Ocean | 64 min |
| May 20, 5:15 PM EDT | Special Marine Warning | PHI | 45 min | |
| May 20, 5:20 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 27 min |
| May 20, 5:51 PM EDT | Special Marine Warning | PHI | 32 min | |
| May 20, 5:54 PM EDT | Severe Thunderstorm Warning | PHI | Ocean | 28 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2022Severe Thunderstorm Warnings in Pennsylvania, 2022Every severe thunderstorm warning in 2022
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.