Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 72, NWS Philadelphia/Mount Holly

June 16, 20235 counties in Pennsylvania; 4 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 16, 2023, 11:58 AM EDT for 5 counties in Pennsylvania; 4 counties in New Jersey. It was in force for 47 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 16, 2023, 11:58 AM EDT (15:58 UTC)
Expired: Jun 16, 2023, 12:45 PM EDT
In force: 47 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Burlington County, NJ, Camden County, NJ, Hunterdon County, NJ, Mercer County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 15:58 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 16, 12:09 PM EDT	TSTM WND DMG	Norristown, PA	Report from mPING: 1-inch tree limbs broken; Shingles blown off.
Jun 16, 12:09 PM EDT	TSTM WND DMG	Norristown, PA	Report from mPING: 1-inch tree limbs broken; Shingles blown off.
Jun 16, 12:19 PM EDT	HAIL 0.75	1 Ese Shawmont, PA	Report from mPING: Dime (0.75 in.).
Jun 16, 12:19 PM EDT	HAIL 0.75	1 Ese Shawmont, PA	Report from mPING: Dime (0.75 in.).

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 16, 11:06 AM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 4.0 hours before the alert went out and 216 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 5 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1418 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

592 
WUUS51 KPHI 161558
SVRPHI
NJC005-007-019-021-PAC017-029-045-091-101-161645-
/O.NEW.KPHI.SV.W.0072.230616T1558Z-230616T1645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1158 AM EDT Fri Jun 16 2023

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  South central Hunterdon County in northwestern New Jersey...
  Northwestern Camden County in southern New Jersey...
  Southwestern Mercer County in central New Jersey...
  Northwestern Burlington County in southern New Jersey...
  Montgomery County in southeastern Pennsylvania...
  Bucks County in southeastern Pennsylvania...
  Northeastern Chester County in southeastern Pennsylvania...
  Philadelphia County in southeastern Pennsylvania...
  Delaware County in southeastern Pennsylvania...

* Until 1245 PM EDT.

* At 1157 AM EDT, severe thunderstorms were located along a line
  extending from Green Lane to near Conshohocken to near Penns Grove,
  moving east at 45 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, Camden, Gloucester City, Bensalem, Ewing,
  Norristown, Chester, Willingboro, Phoenixville, Lansdale, West
  Norriton, East Norriton, Florence, Yeadon, Burlington, Bristol,
  Quakertown, Perkasie and Doylestown.

This includes the following highways...
 New Jersey Turnpike between exits 4 and 5, and near exit 6A.	
 Pennsylvania Turnpike between mile markers 324 and 359.
 Northeast Extension between mile markers 21 and 42.
 Interstate 95 in Pennsylvania between mile markers 1 and 40.
 Interstate 76 in Pennsylvania between mile markers 327 and 351.
 Interstate 76 in New Jersey between mile markers 2 and 3.
 Interstate 295 in New Jersey between mile markers 37 and 50, and
between mile markers 75 and 76.
 Interstate 676 in Pennsylvania between mile markers 0 and 1.
 Interstate 676 in New Jersey between mile markers 0 and 4.
 Interstate 476 in Pennsylvania between mile markers 0 and 19.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3996 7482 3982 7546 3984 7551 4004 7544
      4033 7563 4038 7558 4053 7502 4019 7475
TIME...MOT...LOC 1557Z 254DEG 38KT 4031 7545 4007 7535 3977 7546 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MLB

3 follow-up statements

420 
WWUS51 KPHI 161620
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1220 PM EDT Fri Jun 16 2023

PAC029-161629-
/O.CAN.KPHI.SV.W.0072.000000T0000Z-230616T1645Z/
Chester PA-
1220 PM EDT Fri Jun 16 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN 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 600 PM EDT for
southern, central and northwestern New Jersey...and southeastern
Pennsylvania.

LAT...LON 4001 7481 3997 7482 3988 7530 4012 7528
      4041 7545 4053 7502 4019 7475
TIME...MOT...LOC 1619Z 245DEG 42KT 4039 7522 4015 7513 3985 7524 

$$

NJC005-007-019-021-PAC017-045-091-101-161645-
/O.CON.KPHI.SV.W.0072.000000T0000Z-230616T1645Z/
Hunterdon NJ-Camden NJ-Mercer NJ-Burlington NJ-Montgomery PA-
Bucks PA-Philadelphia PA-Delaware PA-
1220 PM EDT Fri Jun 16 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT
FOR SOUTH CENTRAL HUNTERDON...NORTHWESTERN CAMDEN...SOUTHWESTERN
MERCER...NORTHWESTERN BURLINGTON...EASTERN MONTGOMERY...BUCKS...
PHILADELPHIA AND EAST CENTRAL DELAWARE COUNTIES...

At 1219 PM EDT, severe thunderstorms were located along a line
extending from Dublin to Willow Grove to Paulsboro, moving northeast
at 50 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Philadelphia, Trenton, Camden, Bensalem, Ewing, Willingboro,
Lansdale, Florence, Yeadon, Burlington, Bristol, Quakertown,
Perkasie, Doylestown, Byram, Riverside, Palmyra, Hatboro, Souderton
and Folcroft.

This includes the following highways...
 New Jersey Turnpike exit 5 and near exit 6A.
 Pennsylvania Turnpike between mile markers 334 and 359.
 Northeast Extension between mile markers 22 and 42.
 Interstate 95 in Pennsylvania between mile markers 19 and 40.
 Interstate 76 in Pennsylvania between mile markers 334 and 350.
 Interstate 295 in New Jersey between mile markers 39 and 50, and
between mile markers 75 and 76.
 Interstate 676 in Pennsylvania between mile markers 0 and 1.
 Interstate 676 in New Jersey between mile markers 2 and 4.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4001 7481 3997 7482 3988 7530 4012 7528
      4041 7545 4053 7502 4019 7475
TIME...MOT...LOC 1619Z 245DEG 42KT 4039 7522 4015 7513 3985 7524 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MLB

824 
WWUS51 KPHI 161629
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1229 PM EDT Fri Jun 16 2023

NJC005-007-019-021-PAC017-045-091-101-161645-
/O.CON.KPHI.SV.W.0072.000000T0000Z-230616T1645Z/
Hunterdon NJ-Camden NJ-Mercer NJ-Burlington NJ-Montgomery PA-
Bucks PA-Philadelphia PA-Delaware PA-
1229 PM EDT Fri Jun 16 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT
FOR SOUTHERN HUNTERDON...NORTHWESTERN CAMDEN...SOUTHWESTERN MERCER...
NORTHWESTERN BURLINGTON...SOUTHEASTERN MONTGOMERY...SOUTHEASTERN
BUCKS...PHILADELPHIA AND EAST CENTRAL DELAWARE COUNTIES...

At 1228 PM EDT, severe thunderstorms were located along a line
extending from Pipersville to near Feasterville to Westville, moving
east at 45 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Philadelphia, Trenton, Camden, Bensalem, Ewing, Willingboro,
Florence, Yeadon, Burlington, Bristol, Doylestown, Riverside,
Palmyra, Hatboro, Folcroft, Jenkintown, Chalfont, East Lansdowne,
Beverly and Rockledge.

This includes the following highways...
 New Jersey Turnpike exit 5 and near exit 6A.
 Pennsylvania Turnpike between mile markers 339 and 359.
 Interstate 95 in Pennsylvania between mile markers 19 and 40.
 Interstate 76 in Pennsylvania between mile markers 338 and 350.
 Interstate 295 in New Jersey between mile markers 39 and 50, and
between mile markers 75 and 76.
 Interstate 676 in Pennsylvania between mile markers 0 and 1.
 Interstate 676 in New Jersey between mile markers 2 and 4.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4001 7481 3997 7482 3988 7530 4013 7520
      4031 7529 4038 7490 4019 7475
TIME...MOT...LOC 1628Z 254DEG 38KT 4041 7511 4017 7502 3987 7513 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MLB

318 
WWUS51 KPHI 161643
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1243 PM EDT Fri Jun 16 2023

NJC005-007-019-021-PAC017-045-091-101-161652-
/O.EXP.KPHI.SV.W.0072.000000T0000Z-230616T1645Z/
Hunterdon NJ-Camden NJ-Mercer NJ-Burlington NJ-Montgomery PA-
Bucks PA-Philadelphia PA-Delaware PA-
1243 PM EDT Fri Jun 16 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN HUNTERDON...
NORTHWESTERN CAMDEN...SOUTHWESTERN MERCER...NORTHWESTERN
BURLINGTON...SOUTHEASTERN MONTGOMERY...SOUTHEASTERN BUCKS...
PHILADELPHIA AND EAST CENTRAL DELAWARE COUNTIES WILL EXPIRE AT 1245
PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 600 PM EDT for
southern, 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.

Remember, a Severe Thunderstorm Warning still remains in effect for
Mercer, Burlington, and Bucks counties until 1:30 PM EDT.

LAT...LON 4001 7481 3997 7482 3988 7530 4013 7520
      4031 7529 4038 7490 4019 7475
TIME...MOT...LOC 1642Z 254DEG 38KT 4045 7494 4021 7485 3991 7496 

$$

MLB

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 10:26 AM EDT	Special Weather Statement	PHI	Chester	34 min
Jun 16, 10:48 AM EDT	Severe Thunderstorm Warning	PHI	Chester	42 min
Jun 16, 11:02 AM EDT	Special Weather Statement	PHI	Delaware	28 min
Jun 16, 11:10 AM EDT	Tornado Warning	PHI	Berks, Chester	35 min
Jun 16, 11:20 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	40 min
Jun 16, 11:33 AM EDT	Tornado Warning	PHI	Chester, Delaware, Montgomery	27 min
Jun 16, 11:46 AM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	59 min
Jun 16, 12:41 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	49 min
Jun 16, 12:46 PM EDT	Areal Flood Advisory	PHI	Bucks, Delaware, Montgomery, Philadelphia	3 hr
Jun 16, 12:49 PM EDT	Flash Flood Warning	PHI	Bucks, Philadelphia	3 hr
Jun 16, 10:39 AM EDT	Special Weather Statement	PHI	Cape May	36 min
Jun 16, 11:01 AM EDT	Special Marine Warning	PHI		44 min
Jun 16, 11:04 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May	41 min
Jun 16, 11:43 AM EDT	Special Marine Warning	PHI		62 min
Jun 16, 11:54 AM EDT	Special Marine Warning	PHI		66 min
Jun 16, 12:25 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more	65 min
Jun 16, 12:30 PM EDT	Special Marine Warning	PHI		90 min
Jun 16, 12:55 PM EDT	Tornado Warning	PHI	Burlington, Ocean	35 min
Jun 16, 1:13 PM EDT	Special Marine Warning	PHI		2 hr
Jun 16, 1:15 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Mercer, Middlesex and 2 more	60 min
Jun 16, 1:29 PM EDT	Special Marine Warning	PHI		2 hr
Jun 16, 2:53 PM EDT	Special Marine Warning	PHI		67 min
Jun 16, 3:54 PM EDT	Special Marine Warning	PHI		66 min
Jun 16, 5:07 PM EDT	Special Marine Warning	PHI		53 min
Jun 16, 6:01 PM EDT	Special Marine Warning	PHI		59 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2023 Severe Thunderstorm Warnings in New Jersey, 2023 Every 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.