Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 174, NWS Philadelphia/Mount Holly

June 29, 20195 counties in New Jersey; 4 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 29, 2019, 4:28 PM EDT for 5 counties in New Jersey; 4 counties in Pennsylvania. It was in force for 47 min. 21 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 29, 2019, 4:28 PM EDT (20:28 UTC)
Expired: Jun 29, 2019, 5:15 PM EDT
In force: 47 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ, Bucks County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 46 km from the middle of the area, began a volume at 20:28 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 29, 4:28 PM EDT	TSTM WND DMG	1 Sse Lower Moreland Tw, PA	LARGE TREE BLOWN DOWN BLOCKING STAHL ROAD NEAR WELSH ROAD. TIME ESTIMATED FROM RADAR.
Jun 29, 4:30 PM EDT	TSTM WND DMG	1 Sw Rockledge, PA	DOWNED TREE NEAR THE INTERSECTION OF CHANCELLOR AVENUE AND NORTHWOOD AVENUE. TIME ESTIMATED FROM RADAR.
Jun 29, 4:30 PM EDT	TSTM WND DMG	Tacony, PA	REPORTS OF DOWNED TREES IN THE AREA. TIME ESTIMATED FROM RADAR.
Jun 29, 4:32 PM EDT	TSTM WND DMG	1 Ene Pilesgrove Twp, NJ	MPING REPORT OF TREE LIMBS DOWN AND PROPERTY DAMAGE FROM THUNDERSTORM WINDS AT THIS LOCATION. TIME ESTIMATED FROM RADAR.
Jun 29, 4:32 PM EDT	TSTM WND DMG	Northeast Philadelphia, PA	SOCIAL MEDIA PHOTOS OF SEVERAL TREES DOWN IN THE NORTHEAST PHILADELPHIA AREA. TIME ESTIMATED FROM RADAR.
Jun 29, 4:32 PM EDT	HAIL 0.7	Mount Holly, NJ	DIME SIZE HAIL REPORTED IN DOWNTOWN MOUNT HOLLY. TIME ESTIMATED FROM RADAR.
Jun 29, 4:34 PM EDT	TSTM WND DMG	1 Nw Mount Holly, NJ	MULTIPLE PHOTOS AND REPORTS OF POWER LINES DOWN. TIME ESTIMATED FROM RADAR.
Jun 29, 4:34 PM EDT	TSTM WND DMG	Mount Holly, NJ	TREES AND LARGE TREE LIMBS DOWN. TIME ESTIMATED FROM RADAR.
Jun 29, 4:34 PM EDT	HAIL 0.75	Mount Holly, NJ	TIME ESTIMATED FROM RADAR.
Jun 29, 4:40 PM EDT	TSTM WND DMG	2 Wsw Morrisville, PA	DOWNED TREE SEVERELY DAMAGED AN APARTMENT BUILDING. TIME ESTIMATED FROM RADAR.
Jun 29, 4:41 PM EDT	HAIL 0.25	Cherry Hill, NJ	LASTED FOR 10 MINUTES.
Jun 29, 4:42 PM EDT	NON-TSTM WND DMG	1 Nw Langhorne, PA	SEVERAL TREES AND POWER LINES DOWN. WINDS BLEW DOWN A PARTY TENT. TIME ESTIMATED FROM RADAR.
Jun 29, 4:43 PM EDT	TSTM WND DMG	1 Sse Bensalem, PA	MPING REPORT OF TREE LIMBS DOWN AND PROPERTY DAMAGE FROM THUNDERSTORM WINDS. TIME ESTIMATED FROM RADAR.
Jun 29, 4:43 PM EDT	TSTM WND DMG	Tacony, PA	TREE DOWN ON A TRUCK AND APARTMENT. TIME ESTIMATED FROM RADAR.
Jun 29, 4:45 PM EDT	TSTM WND DMG	1 Ssw Philadelphia, PA	TREES AND POWER LINES DOWN BETWEEN WASHINGTON AND CHRISTIAN STREETS. TIME ESTIMATED FROM RADAR.
Jun 29, 4:46 PM EDT	TSTM WND DMG	Shiloh, NJ	DOWNED TREE AT A RESIDENCE. TIME ESTIMATED FROM RADAR.
Jun 29, 4:48 PM EDT	TSTM WND DMG	Morrisville, PA	TREES DOWN. TIME ESTIMATED FROM RADAR.
Jun 29, 4:50 PM EDT	HAIL 0.75	1 W Mount Laurel, NJ
Jun 29, 4:57 PM EDT	TSTM WND DMG	Jacksonville, NJ	A TREE FELL ONTO A HOUSE IN MOUNT HOLLY. TIME ESTIMATED FROM RADAR.
Jun 29, 5:00 PM EDT	TSTM WND DMG	2 S Monroe Twp, NJ	MPING REPORT OF TREES AND POWER LINES DOWN AT THIS LOCATION. TIME ESTIMATED FROM RADAR.
Jun 29, 5:15 PM EDT	MARINE TSTM WIND 43	Fortescue, NJ

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 29, 12:08 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.5 hours before the alert went out and 205 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: 1180 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1077 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

484 
WUUS51 KPHI 292028
SVRPHI
NJC005-007-011-015-033-PAC017-045-091-101-292115-
/O.NEW.KPHI.SV.W.0174.190629T2028Z-190629T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
428 PM EDT Sat Jun 29 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Cumberland County in southern New Jersey...
  Salem County in southern New Jersey...
  Camden County in southern New Jersey...
  Gloucester County in southern New Jersey...
  Northwestern Burlington County in southern New Jersey...
  Southeastern Montgomery County in southeastern Pennsylvania...
  Southeastern Bucks County in southeastern Pennsylvania...
  Philadelphia County in southeastern Pennsylvania...
  Southeastern Delaware County in southeastern Pennsylvania...

* Until 515 PM EDT.

* At 427 PM EDT, severe thunderstorms were located along a line
  extending from Willow Grove to near Hancocks Bridge, moving
  southeast at 40 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Philadelphia, Trenton, Camden, Vineland, Millville, Bridgeton,
  Gloucester City, Cherry Hill, Bensalem, Evesham, Mount Laurel,
  Ewing, Chester, Willingboro, Deptford, Voorhees, Medford, West
  Deptford, Glassboro and Lindenwold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms are producing large hail. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows!

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across southeast Pennsylvania and northern Delaware and 
will move into the warned area quickly. SEEK SHELTER NOW inside a 
sturdy structure and stay away from windows! 

In addition to large hail and damaging winds, frequent cloud to 
ground lightning is occurring with these storms. Move indoors 
immediately. Remember, if you can hear thunder, you are close enough 
to be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3958 7491 3952 7499 3949 7495 3915 7513
      3944 7551 3982 7538 4041 7505 4039 7496
      4033 7494 4030 7487 4024 7483 4022 7477
      4015 7472 4019 7470 4014 7461
TIME...MOT...LOC 2027Z 293DEG 33KT 4015 7509 3947 7546 

HAIL...1.00IN
WIND...70MPH
 
$$

CMS

2 follow-up statements

609 
WWUS51 KPHI 292052
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
452 PM EDT Sat Jun 29 2019

PAC045-091-292102-
/O.CAN.KPHI.SV.W.0174.000000T0000Z-190629T2115Z/
Montgomery PA-Delaware PA-
452 PM EDT Sat Jun 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONTGOMERY AND
SOUTHEASTERN DELAWARE COUNTIES 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 700 PM EDT for
southern and central New Jersey...and southeastern Pennsylvania.

LAT...LON 3958 7491 3952 7499 3949 7495 3915 7513
      3944 7551 3986 7524 3990 7513 3996 7513
      4002 7501 4008 7496 4012 7497 4020 7512
      4033 7494 4022 7477 4015 7472 4019 7470
      4013 7461
TIME...MOT...LOC 2052Z 293DEG 33KT 4007 7484 3939 7521 

$$

NJC005-007-011-015-033-PAC017-101-292115-
/O.CON.KPHI.SV.W.0174.000000T0000Z-190629T2115Z/
Cumberland NJ-Salem NJ-Camden NJ-Gloucester NJ-Burlington NJ-
Bucks PA-Philadelphia PA-
452 PM EDT Sat Jun 29 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR CUMBERLAND...SALEM...CAMDEN...GLOUCESTER...NORTHWESTERN
BURLINGTON...SOUTHEASTERN BUCKS AND CENTRAL PHILADELPHIA COUNTIES...

At 452 PM EDT, severe thunderstorms were located along a line
extending from Burlington to Fairton, moving southeast at 40 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Trenton, Camden, Vineland, Millville, Bridgeton, Gloucester City, 
Cherry Hill, Bensalem, Evesham, Mount Laurel, Ewing, Willingboro, 
Deptford, Voorhees, Medford, West Deptford, Glassboro, Lindenwold 
and Lumberton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3958 7491 3952 7499 3949 7495 3915 7513
      3944 7551 3986 7524 3990 7513 3996 7513
      4002 7501 4008 7496 4012 7497 4020 7512
      4033 7494 4022 7477 4015 7472 4019 7470
      4013 7461
TIME...MOT...LOC 2052Z 293DEG 33KT 4007 7484 3939 7521 

HAIL...0.75IN
WIND...60MPH
 
$$

CMS

618 
WWUS51 KPHI 292110 RRA
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
510 PM EDT Sat Jun 29 2019

NJC005-007-011-015-033-PAC017-101-292119-
/O.EXP.KPHI.SV.W.0174.000000T0000Z-190629T2115Z/
Cumberland NJ-Salem NJ-Camden NJ-Gloucester NJ-Burlington NJ-
Bucks PA-Philadelphia PA-
510 PM EDT Sat Jun 29 2019

...THE SEVERE THUNDERSTORM WARNING FOR CUMBERLAND...SALEM...CAMDEN...
GLOUCESTER...NORTHWESTERN BURLINGTON...SOUTHEASTERN BUCKS AND CENTRAL
PHILADELPHIA COUNTIES WILL EXPIRE AT 515 PM EDT...
    
The storms which prompted the warning have moved out of the area.
However, a new severe thunderstorm warning is in effect for 
Cumberland County.

A severe thunderstorm watch remains in effect until 700 PM EDT for
southern and central 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 3958 7491 3952 7499 3949 7495 3915 7513
      3944 7551 3986 7524 3990 7513 3996 7513
      4002 7501 4008 7496 4012 7497 4020 7512
      4033 7494 4022 7477 4015 7472 4019 7470
      4013 7461
TIME...MOT...LOC 2109Z 293DEG 33KT 4001 7466 3933 7503 

$$

CMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 8:08 PM EDT	Special Weather Statement	PHI	Burlington	37 min
Jun 29, 1:35 PM EDT	Special Weather Statement	PHI	Camden	25 min
Jun 29, 1:54 PM EDT	Special Weather Statement	PHI	Burlington	36 min
Jun 29, 2:31 PM EDT	Special Weather Statement	PHI	Gloucester	29 min
Jun 29, 3:09 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Gloucester	37 min
Jun 29, 3:10 PM EDT	Special Marine Warning	PHI		50 min
Jun 29, 3:14 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	46 min
Jun 29, 3:17 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	43 min
Jun 29, 3:18 PM EDT	Special Marine Warning	PHI		57 min
Jun 29, 3:19 PM EDT	Special Weather Statement	PHI	Ocean	26 min
Jun 29, 3:24 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	36 min
Jun 29, 3:25 PM EDT	Special Weather Statement	PHI	Burlington	35 min
Jun 29, 3:31 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	44 min
Jun 29, 3:45 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	45 min
Jun 29, 3:55 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	50 min
Jun 29, 3:56 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	49 min
Jun 29, 3:59 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	46 min
Jun 29, 4:00 PM EDT	Flash Flood Warning	PHI	Gloucester, Salem	3 hr
Jun 29, 4:01 PM EDT	Flash Flood Warning	PHI	Sussex, Warren	3 hr
Jun 29, 4:05 PM EDT	Special Marine Warning	PHI		55 min
Jun 29, 4:06 PM EDT	Special Marine Warning	PHI		54 min
Jun 29, 4:11 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	49 min
Jun 29, 4:15 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Ocean	30 min
Jun 29, 4:16 PM EDT	Special Marine Warning	PHI		18 min
Jun 29, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	27 min
Jun 29, 4:25 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	50 min
Jun 29, 4:26 PM EDT	Special Marine Warning	PHI		49 min
Jun 29, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset, Sussex, Warren	48 min
Jun 29, 4:39 PM EDT	Special Marine Warning	PHI		96 min
Jun 29, 4:41 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	3 hr
Jun 29, 4:44 PM EDT	Areal Flood Advisory	PHI	Burlington, Ocean	3 hr
Jun 29, 4:52 PM EDT	Special Marine Warning	PHI		34 min
Jun 29, 4:53 PM EDT	Severe Thunderstorm Warning	PHI	Morris	22 min
Jun 29, 4:55 PM EDT	Special Weather Statement	PHI	Ocean	35 min
Jun 29, 5:03 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Morris, Somerset	27 min
Jun 29, 5:05 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Monmouth, Ocean	40 min
Jun 29, 5:08 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	67 min
Jun 29, 5:19 PM EDT	Special Marine Warning	PHI		116 min
Jun 29, 5:29 PM EDT	Special Marine Warning	PHI		109 min
Jun 29, 5:32 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	43 min
Jun 29, 5:43 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Cape May, Monmouth, Ocean	32 min
Jun 29, 2:27 PM EDT	Severe Thunderstorm Warning	PHI	Berks	63 min
Jun 29, 2:46 PM EDT	Special Weather Statement	PHI	Chester	29 min
Jun 29, 3:06 PM EDT	Special Weather Statement	PHI	Chester	24 min
Jun 29, 3:09 PM EDT	Severe Thunderstorm Warning	PHI	Chester	51 min
Jun 29, 3:20 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	55 min
Jun 29, 3:27 PM EDT	Severe Thunderstorm Warning	PHI	Chester	53 min
Jun 29, 3:45 PM EDT	Flash Flood Warning	PHI	Chester	3 hr
Jun 29, 3:52 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	53 min
Jun 29, 4:17 PM EDT	Areal Flood Advisory	PHI	Berks, Lehigh, Northampton	3 hr
Jun 29, 7:10 PM EDT	Special Weather Statement	PHI	Berks	35 min
Jun 29, 7:16 PM EDT	Special Weather Statement	PHI	Lebanon	29 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2019 Severe Thunderstorm Warnings in Pennsylvania, 2019 Every severe thunderstorm warning in 2019

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.