Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 111, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 26, 2023, 8:42 PM EDT for Bucks County, Pennsylvania; 4 counties in New Jersey. It was in force for 48 min. 4 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
- Jun 26, 2023, 8:42 PM EDT (00:42 UTC)
- Expired
- Jun 26, 2023, 9:30 PM EDT
- In force
- 48 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, Middlesex County, NJ, Somerset County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 56 km from the middle of the area, began a volume at 00:45 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 |
|---|---|---|---|
| Jun 26, 8:54 PM EDT | TSTM WND DMG | Newtown Twp, PA | Reports of downed wires on Route 417. Time estimated via radar. |
| Jun 26, 8:54 PM EDT | TSTM WND DMG | Newtown Twp, PA | Reports of downed wires on Route 417. Time estimated via radar. |
| Jun 26, 9:00 PM EDT | TSTM WND DMG | 1 Sse Newtown, PA | Reports of trees down blocking roadway in the Langhore/Middletown area. Time estimated via radar. |
| Jun 26, 9:00 PM EDT | TSTM WND DMG | 1 Sse Newtown, PA | Reports of trees down blocking roadway in the Langhore/Middletown area. Time estimated via radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 26, 1:11 PM EDT | Severe Thunderstorm Watch | SPC | 11 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.7 hours before the alert went out and 177 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
- 482 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 987 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 134 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
The text
As transmitted.
273
WUUS51 KPHI 270042
SVRPHI
NJC019-021-023-035-PAC017-270130-
/O.NEW.KPHI.SV.W.0111.230627T0042Z-230627T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
842 PM EDT Mon Jun 26 2023
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...
West central Middlesex County in northern New Jersey...
Central Bucks County in southeastern Pennsylvania...
* Until 930 PM EDT.
* At 842 PM EDT, a severe thunderstorm was located over Richboro, or
14 miles west of Trenton, moving northeast 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...
Trenton, South Brunswick, Ewing, Princeton, Doylestown, Flemington,
Pennington, New Hope, Yardley, Newtown, Hopewell, Langhorne,
Ivyland, Rocky Hill, Stockton, Washington Crossing, Skillman,
Feasterville-Trevose, Flagtown and Kingston.
This includes the following highways...
Pennsylvania Turnpike between mile markers 347 and 349.
Interstate 295 in New Jersey between mile markers 69 and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4039 7450 4014 7501 4016 7505 4026 7518
4060 7480
TIME...MOT...LOC 0042Z 226DEG 30KT 4025 7503
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS3 follow-up statements
779
WWUS51 KPHI 270059
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
859 PM EDT Mon Jun 26 2023
NJC023-270109-
/O.CAN.KPHI.SV.W.0111.000000T0000Z-230627T0130Z/
Middlesex NJ-
859 PM EDT Mon Jun 26 2023
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MIDDLESEX COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
central, northern and northwestern New Jersey...and southeastern
Pennsylvania.
LAT...LON 4015 7499 4033 7510 4053 7480 4033 7462
TIME...MOT...LOC 0059Z 237DEG 17KT 4026 7495
$$
NJC019-021-035-PAC017-270130-
/O.CON.KPHI.SV.W.0111.000000T0000Z-230627T0130Z/
Hunterdon NJ-Mercer NJ-Somerset NJ-Bucks PA-
859 PM EDT Mon Jun 26 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SOUTHEASTERN HUNTERDON...NORTHWESTERN MERCER...SOUTHWESTERN
SOMERSET AND SOUTHEASTERN BUCKS COUNTIES...
At 859 PM EDT, a severe thunderstorm was located over Newtown, or 10
miles west of Trenton, moving northeast at 20 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...
Trenton, Ewing, Princeton, Pennington, New Hope, Yardley, Newtown,
Hopewell, Langhorne, Stockton, Washington Crossing, Skillman,
Feasterville-Trevose, Feasterville, Woodside, Richboro, Cloverhill,
Lawrenceville, Lambertville and Churchville.
This includes Interstate 295 in New Jersey between mile markers 69
and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4015 7499 4033 7510 4053 7480 4033 7462
TIME...MOT...LOC 0059Z 237DEG 17KT 4026 7495
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS555
WWUS51 KPHI 270112
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
912 PM EDT Mon Jun 26 2023
NJC035-270121-
/O.CAN.KPHI.SV.W.0111.000000T0000Z-230627T0130Z/
Somerset NJ-
912 PM EDT Mon Jun 26 2023
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SOMERSET COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
central, northern and northwestern New Jersey...and southeastern
Pennsylvania.
LAT...LON 4022 7483 4019 7490 4019 7492 4029 7504
4049 7485 4032 7465
TIME...MOT...LOC 0111Z 227DEG 14KT 4028 7490
$$
NJC019-021-PAC017-270130-
/O.CON.KPHI.SV.W.0111.000000T0000Z-230627T0130Z/
Hunterdon NJ-Mercer NJ-Bucks PA-
912 PM EDT Mon Jun 26 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SOUTHEASTERN HUNTERDON...NORTHWESTERN MERCER AND EAST CENTRAL
BUCKS COUNTIES...
At 911 PM EDT, a severe thunderstorm was located over Washington
Crossing, or 7 miles northwest of Trenton, moving northeast at 15
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...
Trenton, Ewing, Pennington, New Hope, Yardley, Newtown, Hopewell,
Washington Crossing, Lawrenceville, Woodside, Lambertville,
Woodbourne and Newtown Grant.
This includes Interstate 295 in New Jersey between mile markers 69
and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4022 7483 4019 7490 4019 7492 4029 7504
4049 7485 4032 7465
TIME...MOT...LOC 0111Z 227DEG 14KT 4028 7490
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS287
WWUS51 KPHI 270120
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
920 PM EDT Mon Jun 26 2023
NJC019-021-PAC017-270130-
/O.EXP.KPHI.SV.W.0111.000000T0000Z-230627T0130Z/
Hunterdon NJ-Mercer NJ-Bucks PA-
920 PM EDT Mon Jun 26 2023
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HUNTERDON...
NORTHWESTERN MERCER AND EAST CENTRAL BUCKS COUNTIES WILL EXPIRE AT
930 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
central, northern and northwestern New Jersey...and southeastern
Pennsylvania.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 4022 7483 4019 7490 4019 7492 4029 7504
4049 7485 4032 7465
TIME...MOT...LOC 0120Z 226DEG 30KT 4033 7483
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 8:27 PM EDT | Special Weather Statement | PHI | Chester | 33 min |
| Jun 26, 8:33 PM EDT | Special Weather Statement | PHI | Philadelphia | 27 min |
| Jun 26, 8:36 PM EDT | Special Weather Statement | PHI | Bucks | 24 min |
| Jun 26, 8:40 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 31 min |
| Jun 26, 9:18 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 42 min |
| Jun 26, 9:30 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 3 hr |
| Jun 26, 9:47 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 43 min |
| Jun 26, 9:51 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Philadelphia | 54 min |
| Jun 26, 9:58 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 47 min |
| Jun 26, 10:33 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 42 min |
| Jun 26, 10:54 PM EDT | Areal Flood Advisory | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 3 hr |
| Jun 26, 11:07 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 53 min |
| Jun 26, 11:27 PM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery, Philadelphia | 3 hr |
| Jun 26, 11:35 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 6 hr |
| Jun 27, 12:00 AM EDT | Areal Flood Warning | PHI | Bucks, Lehigh, Monroe, Northampton | 7 hr |
| Jun 27, 12:51 AM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 4 hr |
| Jun 27, 1:23 AM EDT | Special Weather Statement | PHI | Montgomery | 37 min |
| Jun 27, 2:23 AM EDT | River Flood Warning | PHI | Chester | 6 hr |
| Jun 27, 2:29 AM EDT | Special Weather Statement | PHI | Delaware | 31 min |
| Jun 27, 3:01 AM EDT | Special Weather Statement | PHI | Delaware, Montgomery, Philadelphia | 29 min |
| Jun 27, 3:02 AM EDT | Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 46 min |
| Jun 27, 3:26 AM EDT | River Flood Warning | PHI | Delaware | 4 hr |
| Jun 27, 3:48 AM EDT | Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 17 hr |
| Jun 27, 3:54 AM EDT | River Flood Warning | PHI | Chester, Delaware | 5 hr |
| Jun 27, 6:14 AM EDT | Areal Flood Warning | PHI | Montgomery, Philadelphia | 3 hr |
| Jun 27, 6:16 AM EDT | Areal Flood Warning | PHI | Chester, Delaware | 3 hr |
| Jun 27, 10:08 AM EDT | River Flood Warning | PHI | Chester, Delaware | 109 min |
| Jun 27, 12:45 PM EDT | Special Weather Statement | PHI | Berks | 30 min |
| Jun 27, 2:13 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 47 min |
| Jun 27, 2:18 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 22 min |
| Jun 27, 2:21 PM EDT | Special Weather Statement | PHI | Berks | 24 min |
| Jun 27, 2:42 PM EDT | Areal Flood Advisory | PHI | Berks | 3 hr |
| Jun 27, 2:57 PM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Jun 27, 3:07 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 38 min |
| Jun 27, 3:25 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 19 min |
| Jun 27, 3:33 PM EDT | Special Weather Statement | PHI | Delaware | 27 min |
| Jun 27, 3:57 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 48 min |
| Jun 27, 4:06 PM EDT | Special Weather Statement | PHI | Northampton | 24 min |
| Jun 27, 4:24 PM EDT | Areal Flood Advisory | PHI | Northampton | 3 hr |
| Jun 27, 4:30 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 32 min |
| Jun 27, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 42 min |
| Jun 27, 4:39 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 51 min |
| Jun 27, 4:58 PM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery, Philadelphia | 3 hr |
| Jun 27, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 44 min |
| Jun 27, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 38 min |
| Jun 27, 5:43 PM EDT | Special Weather Statement | PHI | Monroe, Northampton | 32 min |
| Jun 27, 5:44 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 5 hr |
| Jun 27, 5:52 PM EDT | Areal Flood Advisory | PHI | Northampton | 3 hr |
| Jun 27, 5:57 PM EDT | Areal Flood Advisory | PHI | Bucks, Delaware, Philadelphia | 3 hr |
| Jun 27, 6:15 PM EDT | Special Weather Statement | PHI | Northampton | 45 min |
| Jun 26, 8:56 PM EDT | Areal Flood Advisory | PHI | Sussex | 38 min |
| Jun 26, 8:56 PM EDT | Special Weather Statement | PHI | Warren | 34 min |
| Jun 26, 9:21 PM EDT | Special Weather Statement | PHI | Mercer | 24 min |
| Jun 26, 9:31 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 44 min |
| Jun 26, 9:34 PM EDT | Flash Flood Warning | PHI | Sussex | 2 hr |
| Jun 26, 9:46 PM EDT | Special Marine Warning | PHI | 59 min | |
| Jun 26, 10:07 PM EDT | Special Weather Statement | PHI | Middlesex, Morris | 23 min |
| Jun 26, 10:26 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 16 min |
| Jun 26, 10:41 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 84 min |
| Jun 26, 11:42 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 33 min |
| Jun 27, 12:12 AM EDT | Special Weather Statement | PHI | Monmouth | 33 min |
| Jun 27, 12:16 AM EDT | Special Marine Warning | PHI | 44 min | |
| Jun 27, 1:26 AM EDT | Special Marine Warning | PHI | 49 min | |
| Jun 27, 2:00 AM EDT | Special Marine Warning | PHI | 45 min | |
| Jun 27, 4:04 AM EDT | River Flood Warning | PHI | Morris | 22 hr |
| Jun 27, 11:16 AM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 3 hr |
| Jun 27, 11:42 AM EDT | Areal Flood Advisory | PHI | Monmouth | 2 hr |
| Jun 27, 3:05 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 40 min |
| Jun 27, 3:06 PM EDT | Special Marine Warning | PHI | 54 min | |
| Jun 27, 3:32 PM EDT | Areal Flood Advisory | PHI | Cumberland, Salem | 3 hr |
| Jun 27, 3:38 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 52 min |
| Jun 27, 3:41 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 22 min |
| Jun 27, 3:52 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jun 27, 4:21 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 39 min |
| Jun 27, 4:36 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 26 min |
| Jun 27, 5:05 PM EDT | Special Marine Warning | PHI | 25 min | |
| Jun 27, 5:17 PM EDT | Flash Flood Warning | PHI | Salem | 4 hr |
| Jun 27, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 32 min |
| Jun 27, 5:40 PM EDT | Special Weather Statement | PHI | Hunterdon, Somerset | 35 min |
| Jun 27, 5:45 PM EDT | Special Weather Statement | PHI | Warren | 45 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2023Severe Thunderstorm Warnings in Pennsylvania, 2023Every severe thunderstorm warning in 2023
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.