Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 18, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 31, 2022, 10:23 PM EDT for 5 counties in Pennsylvania; Hunterdon County, Mercer County, Somerset County, New Jersey. It was in force for 25 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
- Mar 31, 2022, 10:23 PM EDT (02:23 UTC)
- Expired
- Mar 31, 2022, 10:48 PM EDT
- In force
- 25 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Mercer County, NJ, Somerset County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 02:23 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 |
|---|---|---|---|
| Mar 31, 4:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.4 hours before the alert went out and 246 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
- 4 J/kg
- Mixed-layer CIN
- -379 J/kg
- Mixed-layer LCL
- 445 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 393 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
375
WUUS51 KPHI 010223
SVRPHI
NJC019-021-035-PAC017-029-045-091-101-010315-
/O.NEW.KPHI.SV.W.0018.220401T0223Z-220401T0315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1023 PM EDT Thu Mar 31 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...
Southeastern Montgomery County in southeastern Pennsylvania...
Southeastern Bucks County in southeastern Pennsylvania...
Southeastern Chester County in southeastern Pennsylvania...
Philadelphia County in southeastern Pennsylvania...
Delaware County in southeastern Pennsylvania...
* Until 1115 PM EDT.
* At 1022 PM EDT, severe thunderstorms were located along a line
extending from near New Hope to Elam, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Philadelphia, Trenton, Bensalem, Ewing, Norristown, Chester, East
Norriton, Princeton, Yeadon, Westtown, Conshohocken, Hatboro,
Folcroft, Ambler, Swarthmore, Kennett Square, Jenkintown, Narberth,
East Lansdowne and Pennington.
This includes the following highways...
Pennsylvania Turnpike between mile markers 329 and 357.
Northeast Extension between mile markers 21 and 22.
Interstate 95 in Pennsylvania between mile markers 5 and 14, and
between mile markers 22 and 40.
Interstate 76 in Pennsylvania between mile markers 328 and 348.
Interstate 295 in New Jersey between mile markers 69 and 76.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 476 in Pennsylvania between mile markers 0 and 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to damaging winds, frequent cloud to ground lightning is
occurring with some of these storms. Move indoors immediately.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4016 7480 3996 7513 3986 7525 3983 7572
4044 7490 4048 7457
TIME...MOT...LOC 0222Z 254DEG 32KT 4034 7490 3986 7557
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse2 follow-up statements
247
WWUS51 KPHI 010242
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1042 PM EDT Thu Mar 31 2022
PAC029-010251-
/O.CAN.KPHI.SV.W.0018.000000T0000Z-220401T0315Z/
Chester PA-
1042 PM EDT Thu Mar 31 2022
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHESTER COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until midnight EDT for
central, northern and northwestern New Jersey...and southeastern
Pennsylvania.
LAT...LON 4016 7480 3996 7513 3993 7530 3992 7552
4044 7490 4048 7457
TIME...MOT...LOC 0241Z 245DEG 40KT 4045 7463 3997 7530
$$
NJC019-021-035-PAC017-045-091-101-010315-
/O.CON.KPHI.SV.W.0018.000000T0000Z-220401T0315Z/
Hunterdon NJ-Mercer NJ-Somerset NJ-Montgomery PA-Bucks PA-
Philadelphia PA-Delaware PA-
1042 PM EDT Thu Mar 31 2022
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT
FOR SOUTHEASTERN HUNTERDON...NORTHWESTERN MERCER...SOUTHWESTERN
SOMERSET...SOUTHEASTERN MONTGOMERY...SOUTHEASTERN BUCKS...
PHILADELPHIA AND CENTRAL DELAWARE COUNTIES...
At 1041 PM EDT, severe thunderstorms were located along a line
extending from Belle Mead to Drexel Hill, moving northeast at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Philadelphia, Trenton, Bensalem, Ewing, Princeton, Yeadon,
Conshohocken, Hatboro, Ambler, Jenkintown, Narberth, East Lansdowne,
Pennington, Rockledge, New Hope, Yardley, Newtown, Hopewell,
Tullytown and Abington.
This includes the following highways...
Pennsylvania Turnpike between mile markers 333 and 357.
Interstate 95 in Pennsylvania between mile markers 22 and 40.
Interstate 76 in Pennsylvania between mile markers 331 and 344.
Interstate 295 in New Jersey between mile markers 69 and 76.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 476 in Pennsylvania between mile markers 5 and 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4016 7480 3996 7513 3993 7530 3992 7552
4044 7490 4048 7457
TIME...MOT...LOC 0241Z 245DEG 40KT 4045 7463 3997 7530
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse911
WWUS51 KPHI 010248
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1048 PM EDT Thu Mar 31 2022
NJC019-021-035-PAC017-045-091-101-010258-
/O.CAN.KPHI.SV.W.0018.000000T0000Z-220401T0315Z/
Hunterdon NJ-Mercer NJ-Somerset NJ-Montgomery PA-Bucks PA-
Philadelphia PA-Delaware PA-
1048 PM EDT Thu Mar 31 2022
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HUNTERDON...
NORTHWESTERN MERCER...SOUTHWESTERN SOMERSET...SOUTHEASTERN
MONTGOMERY...SOUTHEASTERN BUCKS...PHILADELPHIA AND CENTRAL DELAWARE
COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until midnight EDT for
central, northern and northwestern New Jersey...and southeastern
Pennsylvania.
LAT...LON 4016 7480 3996 7513 3993 7530 3992 7552
4044 7490 4048 7457
TIME...MOT...LOC 0246Z 254DEG 32KT 4046 7457 3998 7524
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 8:04 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe, Northampton | 41 min |
| Mar 31, 8:14 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Northampton | 46 min |
| Mar 31, 8:40 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Northampton | 50 min |
| Mar 31, 8:47 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery | 58 min |
| Mar 31, 9:12 PM EDT | Flash Flood Warning | PHI | Lehigh, Northampton | 2 hr |
| Mar 31, 9:36 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Northampton, Philadelphia | 54 min |
| Mar 31, 9:49 PM EDT | Tornado Warning | PHI | Bucks | 16 min |
| Mar 31, 10:21 PM EDT | Areal Flood Advisory | PHI | Bucks, Chester, Delaware, Montgomery | 61 min |
| Mar 31, 8:05 PM EDT | Special Marine Warning | PHI | 55 min | |
| Mar 31, 8:41 PM EDT | Special Marine Warning | PHI | 64 min | |
| Mar 31, 9:27 PM EDT | Special Marine Warning | PHI | 41 min | |
| Mar 31, 11:46 PM EDT | Coastal Flood Statement | PHI | Ocean | 2 hr |
| Apr 1, 2:01 AM EDT | Gale Warning | PHI | 20 hr | |
| Apr 1, 4:26 PM EDT | Special Marine Warning | PHI | 49 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2022Severe Thunderstorm Warnings in New Jersey, 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.