Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 135, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 27, 2023, 4:39 PM EDT for Hunterdon County, Mercer County, New Jersey; Bucks County, Montgomery County, Philadelphia County, Pennsylvania. It was in force for 51 min. 6 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 27, 2023, 4:39 PM EDT (20:39 UTC)
- Expired
- Jun 27, 2023, 5:30 PM EDT
- In force
- 51 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, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 20:38 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 27, 4:43 PM EDT | TSTM WND DMG | 1 W Lower Southampton T, PA | Corrects previous tstm wnd dmg report from 1 W Lower Southampton Twp. Report of a utility poll down on PA-132 between Buck Road and Sycamore Drive. Corrected time to estimate from radar. |
| Jun 27, 4:43 PM EDT | TSTM WND DMG | 1 W Lower Southampton T, PA | Corrects previous tstm wnd dmg report from 1 W Lower Southampton Twp. Report of a utility poll down on PA-132 between Buck Road and Sycamore Drive. Corrected time to estimate from radar. |
| Jun 27, 4:46 PM EDT | TSTM WND DMG | 1 Wnw Lower Southampton, PA | Power lines down on PA-132. Time estimated from radar. |
| Jun 27, 4:46 PM EDT | TSTM WND DMG | 1 Wnw Lower Southampton, PA | Power lines down on PA-132. Time estimated from radar. |
| Jun 27, 4:46 PM EDT | TSTM WND DMG | 2 Wnw Lower Southampton, PA | Down power lines on PA-132. Time estimated from radar. |
| Jun 27, 4:46 PM EDT | TSTM WND DMG | 2 Wnw Lower Southampton, PA | Down power lines on PA-132. Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 8.7 hours before the alert went out and 193 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
- 17 J/kg
- Mixed-layer CIN
- -243 J/kg
- Mixed-layer LCL
- 793 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
923
WUUS51 KPHI 272039
SVRPHI
NJC019-021-PAC017-091-101-272130-
/O.NEW.KPHI.SV.W.0135.230627T2039Z-230627T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
439 PM EDT Tue Jun 27 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
South central Hunterdon County in northwestern New Jersey...
West central Mercer County in central New Jersey...
East central Montgomery County in southeastern Pennsylvania...
Central Bucks County in southeastern Pennsylvania...
Northeastern Philadelphia County in southeastern Pennsylvania...
* Until 530 PM EDT.
* At 439 PM EDT, severe thunderstorms were located along a line
extending from near Doylestown to Ivyland to near Wissinoming,
moving northeast at 25 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...
Philadelphia, Trenton, Bensalem, Ewing, Doylestown, Byram, Hatboro,
Jenkintown, Chalfont, Rockledge, New Hope, Yardley, Newtown,
Dublin, Tullytown, Abington, Langhorne, Bryn Athyn, Ivyland and
Stockton.
This includes the following highways...
Pennsylvania Turnpike between mile markers 342 and 357.
Interstate 95 in Pennsylvania near mile marker 40.
Interstate 295 in New Jersey near mile marker 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 4049 7496 4036 7487 4017 7478 3999 7513
4015 7515 4035 7525
TIME...MOT...LOC 2039Z 219DEG 24KT 4034 7516 4021 7509 4005 7508
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS3 follow-up statements
287
WWUS51 KPHI 272054
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
454 PM EDT Tue Jun 27 2023
NJC019-021-PAC017-091-101-272130-
/O.CON.KPHI.SV.W.0135.000000T0000Z-230627T2130Z/
Hunterdon NJ-Mercer NJ-Montgomery PA-Bucks PA-Philadelphia PA-
454 PM EDT Tue Jun 27 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR SOUTH CENTRAL HUNTERDON...WEST CENTRAL MERCER...EAST CENTRAL
MONTGOMERY...CENTRAL BUCKS AND NORTHEASTERN PHILADELPHIA COUNTIES...
At 454 PM EDT, severe thunderstorms were located along a line
extending from Gardenville to Richboro to Northeast Philadelphia,
moving northeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Philadelphia, Trenton, Bensalem, Ewing, Doylestown, Byram, New Hope,
Yardley, Newtown, Dublin, Tullytown, Langhorne, Bryn Athyn, Ivyland,
Stockton, Washington Crossing, Feasterville-Trevose, Northeast
Philadelphia, Feasterville and Lumberville.
This includes the following highways...
Pennsylvania Turnpike between mile markers 345 and 356.
Interstate 95 in Pennsylvania near mile marker 40.
Interstate 295 in New Jersey near mile marker 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.
&&
LAT...LON 4003 7506 4020 7509 4035 7525 4049 7496
4036 7487 4017 7478
TIME...MOT...LOC 2054Z 239DEG 16KT 4036 7514 4024 7501 4008 7499
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS974
WWUS51 KPHI 272111
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
511 PM EDT Tue Jun 27 2023
NJC019-PAC091-272120-
/O.CAN.KPHI.SV.W.0135.000000T0000Z-230627T2130Z/
Hunterdon NJ-Montgomery PA-
511 PM EDT Tue Jun 27 2023
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL HUNTERDON AND
EAST 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.
LAT...LON 4006 7500 4012 7504 4014 7502 4017 7507
4018 7508 4030 7484 4028 7483 4017 7478
TIME...MOT...LOC 2110Z 247DEG 14KT 4013 7495
$$
NJC021-PAC017-101-272130-
/O.CON.KPHI.SV.W.0135.000000T0000Z-230627T2130Z/
Mercer NJ-Bucks PA-Philadelphia PA-
511 PM EDT Tue Jun 27 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR WEST CENTRAL MERCER...SOUTHEASTERN BUCKS AND NORTHEASTERN
PHILADELPHIA COUNTIES...
At 510 PM EDT, a severe thunderstorm was located over Bensalem, or 11
miles southwest of Trenton, moving northeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Philadelphia, Trenton, Bensalem, Ewing, Yardley, Newtown, Tullytown,
Langhorne, Feasterville-Trevose, Langhorn, Levittown, Feasterville,
Woodside, Northeast Philadelphia, Richboro, Penndel, Langhorne Manor,
Hulmeville, Churchville and Woodbourne.
This includes the following highways...
Pennsylvania Turnpike between mile markers 347 and 356.
Interstate 95 in Pennsylvania near mile marker 40.
Interstate 295 in New Jersey between mile markers 75 and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4006 7500 4012 7504 4014 7502 4017 7507
4018 7508 4030 7484 4028 7483 4017 7478
TIME...MOT...LOC 2110Z 247DEG 14KT 4013 7495
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS782
WWUS51 KPHI 272124
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
524 PM EDT Tue Jun 27 2023
NJC021-PAC017-101-272134-
/O.EXP.KPHI.SV.W.0135.000000T0000Z-230627T2130Z/
Mercer NJ-Bucks PA-Philadelphia PA-
524 PM EDT Tue Jun 27 2023
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MERCER...
SOUTHEASTERN BUCKS AND NORTHEASTERN PHILADELPHIA COUNTIES WILL EXPIRE
AT 530 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
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 4006 7500 4012 7504 4014 7502 4017 7507
4018 7508 4030 7484 4028 7483 4017 7478
TIME...MOT...LOC 2124Z 219DEG 24KT 4020 7488
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 8:42 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 48 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, 9:30 PM EDT | Flash Flood Warning | PHI | Warren | 3 hr |
| 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, 9:51 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 54 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, 10:33 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 42 min |
| Jun 26, 10:41 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 84 min |
| Jun 26, 10:54 PM EDT | Areal Flood Advisory | PHI | Camden, Gloucester, Salem | 3 hr |
| Jun 26, 11:07 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Hunterdon, Mercer, Middlesex, Monmouth and 1 more | 53 min |
| Jun 26, 11:27 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Somerset | 3 hr |
| Jun 26, 11:35 PM EDT | Flash Flood Warning | PHI | Mercer | 6 hr |
| Jun 26, 11:42 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 33 min |
| Jun 27, 12:00 AM EDT | Areal Flood Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 7 hr |
| 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, 3:02 AM EDT | Flood Watch | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more | 46 min |
| Jun 27, 3:48 AM EDT | Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more | 17 hr |
| 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, 4:24 PM EDT | Areal Flood Advisory | PHI | Warren | 3 hr |
| Jun 27, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 42 min |
| Jun 27, 4:36 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 26 min |
| Jun 27, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Warren | 44 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, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 38 min |
| 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 |
| Jun 27, 5:49 PM EDT | Special Weather Statement | PHI | Camden | 26 min |
| Jun 27, 5:52 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 3 hr |
| Jun 27, 5:52 PM EDT | Special Weather Statement | PHI | Burlington | 38 min |
| Jun 27, 5:57 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Cumberland, Gloucester, Mercer, Salem | 3 hr |
| Jun 27, 6:08 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 25 min |
| Jun 27, 6:12 PM EDT | Special Weather Statement | PHI | Middlesex, Morris, Somerset | 33 min |
| Jun 27, 6:15 PM EDT | Special Weather Statement | PHI | Warren | 45 min |
| Jun 27, 6:35 PM EDT | Special Weather Statement | PHI | Burlington | 25 min |
| Jun 27, 6:40 PM EDT | Special Marine Warning | PHI | 36 min | |
| Jun 27, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 44 min |
| Jun 27, 6:49 PM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Jun 27, 6:52 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more | 3 hr |
| Jun 27, 7:03 PM EDT | Special Weather Statement | PHI | Sussex | 27 min |
| Jun 27, 7:30 PM EDT | Special Weather Statement | PHI | Sussex | 30 min |
| Jun 27, 7:56 PM EDT | Special Weather Statement | PHI | Atlantic | 34 min |
| 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, 9:47 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 43 min |
| Jun 26, 9:58 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 47 min |
| 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, 3:26 AM EDT | River Flood Warning | PHI | Delaware | 4 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 |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2023Severe Thunderstorm Warnings in New Jersey, 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.