Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 8, NWS Philadelphia/Mount Holly

February 7, 20209 counties in New Jersey; Bucks County, Montgomery County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 7, 2020, 10:14 AM EST for 9 counties in New Jersey; Bucks County, Montgomery County, Philadelphia County, Pennsylvania. It was in force for 61 min. 31 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: Feb 7, 2020, 10:14 AM EST (15:14 UTC)
Expired: Feb 7, 2020, 11:15 AM EST
In force: 61 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Bucks County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 39 km from the middle of the area, began a volume at 15:15 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
Feb 7, 10:16 AM EST	TSTM WND DMG	1 Ne Sharon Hill, PA	DOWNED TREES ON VEHICLES NEAR POPLAR STREET AND WOODLAND TERRACE. TIME ESTIMATED FROM RADAR.
Feb 7, 10:16 AM EST	TSTM WND DMG	Sharon Hill, PA	DOWNED TREE NEAR ACADEMY PARK HIGH SCHOOL. TIME ESTIMATED FROM RADAR.
Feb 7, 10:17 AM EST	TSTM WND GST 49	Philadelphia Internatio, PA	KPHL ASOS.
Feb 7, 10:18 AM EST	TSTM WND DMG	1 Nnw Philadelphia Inte, PA	DOWNED POWER LINES FROM STRONG WINDS NEAR PROVINCE ISLAND. TIME ESTIMATED FROM RADAR.
Feb 7, 10:18 AM EST	TSTM WND DMG	1 W Horsham Twp, PA	DOWNED TREE NEAR THE INTERSECTION OF CEDAR HILL ROAD AND STONGS LANE. TIME ESTIMATED FROM RADAR.
Feb 7, 10:18 AM EST	TSTM WND DMG	3 Wsw Malaga, NJ	DOWNED TREES AND WIRES NEAR CROW POND ROAD. TIME ESTIMATED FROM RADAR.
Feb 7, 10:20 AM EST	TSTM WND DMG	1 Nnw Mantua, NJ	UPROOTED TREE ON THE NEW JERSEY TURNPIKE. TIME ESTIMATED FROM RADAR.
Feb 7, 10:20 AM EST	TSTM WND DMG	1 Nw Mantua, NJ	DOWNED TREE ON NEW JERSEY TURNPIKE SOUTHBOUND NORTH OF INTERCHANGE 2. TIME ESTIMATED FROM RADAR.
Feb 7, 10:26 AM EST	TSTM WND DMG	1 Wsw Summerdale, PA	DOWNED POWER LINES FROM STRONG WINDS NEAR WHITAKER AVENUE. TIME ESTIMATED FROM RADAR.
Feb 7, 10:26 AM EST	TSTM WND DMG	Buckingham Twp, PA	SEVERAL REPORTS OF POWER OUTAGES IN BUCKINGHAM, PINEVILLE, AND LAHASKA AREAS. TIME ESTIMATED FROM RADAR.
Feb 7, 10:28 AM EST	TSTM WND DMG	1 E Abington, PA	DOWNED TREE BLOCKING THE ROAD NEAR THE INTERSECTION OF HUNTINGDON ROAD AND EDMUND ROAD.
Feb 7, 10:28 AM EST	TSTM WND DMG	Gloucester City, NJ	DOWNED TREES AND POWER LINES FROM STRONG WINDS. TIME ESTIMATED FROM RADAR.
Feb 7, 10:30 AM EST	TSTM WND DMG	Newtown, PA	TREE DOWN IN NEWTOWN. TIME ESTIMATED FROM RADAR.
Feb 7, 10:32 AM EST	TSTM WND DMG	Somerton, PA	SEVERAL REPORTS OF POWER LINES DOWN NEAR SOMERTON, BUSTLETON, AND HUNTINGDON VALLEY. TIME ESTIMATED FROM RADAR.
Feb 7, 10:34 AM EST	TSTM WND DMG	1 Ssw West Haddonfield, NJ	DOWNED TREE ON WIRES NEAR KNOLL TOP LANE. TIME ESTIMATED FROM RADAR.
Feb 7, 10:35 AM EST	TSTM WND DMG	1 S Moorestown, NJ	TRAFFIC SIGNAL DOWN ON NJ-38 WESTBOUND EAST OF FELLOWSHIP RD. TIME ESTIMATED FROM RADAR.
Feb 7, 10:38 AM EST	TSTM WND DMG	1 Nw Medford Twp., NJ	REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN; SHINGLES BLOWN OFF.
Feb 7, 10:38 AM EST	TSTM WND DMG	1 Se Lambertville, NJ	DOWNED TREE AND WIRES NEAR LINCOLN AVENUE AND STUDDIFORD STREET. TIME ESTIMATED FROM RADAR.
Feb 7, 10:39 AM EST	TSTM WND GST 52	2 E Burlington, NJ	TIME ESTIMATED FROM RADAR.
Feb 7, 10:40 AM EST	TSTM WND DMG	1 S Moorestown, NJ	DOWNED TRAFFIC SIGNAL FROM STRONG WINDS. TIME ESTIMATED FROM RADAR.
Feb 7, 10:40 AM EST	TSTM WND DMG	2 Nw Wrightstown, NJ	DOWNED TREE ON NJ-68 SOUTHBOUND. ALL LANES CLOSED AND DETOURED. TIME ESTIMATED FROM RADAR.
Feb 7, 10:40 AM EST	TSTM WND DMG	Croydon, PA	A FEW REPORTS OF POWER LINES DOWN FROM STRONG WINDS IN THE CROYDON AREA. TIME ESTIMATED FROM RADAR.
Feb 7, 10:40 AM EST	TSTM WND GST 61	2 Sw Rancocas, NJ	NJWXNET SENSOR.
Feb 7, 10:42 AM EST	TSTM WND DMG	2 Wnw Columbus, NJ	DOWNED TREE ON I-295 SOUTHBOUND NORTH OF EXIT 52. TIME ESTIMATED FROM RADAR.
Feb 7, 10:42 AM EST	TSTM WND GST 64	Mercer County Airport, NJ	KTTN ASOS.
Feb 7, 10:43 AM EST	TSTM WND DMG	2 N Pennington, NJ	DOWNED TREE ON NJ 31 BOTH DIRECTIONS NORTH OF CR-612. ALL LANES CLOSED AND DETOURED. TIME ESTIMATED FROM RADAR.
Feb 7, 10:48 AM EST	TSTM WND DMG	1 Ssw Yardville, NJ	DOWNED TREE LIMBS FROM STRONG WINDS. MPING REPORT. TIME ESTIMATED FROM RADAR.
Feb 7, 10:54 AM EST	TSTM WND DMG	2 W North Princeton, NJ	GREAT ROAD CLOSED BETWEEN STUART ROAD AND PRINCETON DAY SCHOOL FROM A POLE AND WIRES DOWN. TIME ESTIMATED FROM RADAR.
Feb 7, 10:56 AM EST	TSTM WND DMG	1 Sse Rocky Hill, NJ	DOWNED TREES AND WIRES NEAR WINDROW DRIVE. TIME ESTIMATED FROM RADAR.
Feb 7, 11:02 AM EST	TSTM WND DMG	2 N Kendall Park, NJ	DOWNED TREE ON WIRES FROM STRONG WINDS. TIME ESTIMATED FROM RADAR.
Feb 7, 11:10 AM EST	TSTM WND DMG	2 Wsw Holmdel, NJ	DOWNED TREE AND WIRES ON NJ 34 NORTHBOUND SOUTH OF CR 520. ALL LANES CLOSED. 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, 3.2 hours before the alert went out and 192 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 469 m above ground
0-6 km bulk shear: 105 kt
0-1 km storm-relative helicity: 650 m²/s²
0-3 km storm-relative helicity: 811 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

185 
WUUS51 KPHI 071514
SVRPHI
NJC005-007-015-021-023-025-029-033-035-PAC017-091-101-071615-
/O.NEW.KPHI.SV.W.0008.200207T1514Z-200207T1615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1014 AM EST Fri Feb 7 2020

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Salem County in southern New Jersey...
  Northwestern Ocean County in southern New Jersey...
  Camden County in southern New Jersey...
  Mercer County in central New Jersey...
  Gloucester County in southern New Jersey...
  Burlington County in southern New Jersey...
  Southern Somerset County in northern New Jersey...
  Central Monmouth County in central New Jersey...
  Middlesex County in northern New Jersey...
  Southeastern Montgomery County in southeastern Pennsylvania...
  Southeastern Bucks County in southeastern Pennsylvania...
  Philadelphia County in southeastern Pennsylvania...

* Until 1115 AM EST.

* At 1013 AM EST, severe thunderstorms were located along a line
  extending from near Ambler to Darby Township to near Quinton,
  moving northeast at 55 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Philadelphia, Trenton, Camden, New Brunswick, Perth Amboy,
  Gloucester City, Somerset, Edison, Cherry Hill, Old Bridge,
  Bensalem, Jackson, East Brunswick, Evesham, South Brunswick,
  Sayreville, Mount Laurel, North Brunswick, Marlboro and Manalapan.

This includes the following highways...
 Atlantic City Expressway between mile markers 30 and 44.
 Garden State Parkway between mile markers 116 and 134.
 Interstate 195 in New Jersey between mile markers 0 and 27.
 Interstate 287 in New Jersey between mile markers 0 and 12.
 Interstate 295 in New Jersey between mile markers 9 and 76.
 Interstate 95 in Pennsylvania between mile markers 13 and 40.
 New Jersey Turnpike between exits 1 and 13.
 Interstate 476 in Pennsylvania between mile markers 18 and 19.
 Pennsylvania Turnpike between exits 333 and 353.
 Northeast Extension near exit A20.
 Interstate 676 in New Jersey between mile markers 0 and 4.
 Interstate 676 in Pennsylvania between mile markers 0 and 1.
 Interstate 76 in New Jersey between mile markers 0 and 3.
 Interstate 76 in Pennsylvania between mile markers 332 and 351.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 3971 7463 3973 7474 3963 7485 3952 7518
      3956 7524 3940 7552 3985 7535 3987 7521
      3988 7526 4002 7532 4023 7529 4038 7495
      4035 7486 4046 7476 4060 7443 4060 7421
      4050 7428 4045 7417 4024 7416
TIME...MOT...LOC 1513Z 246DEG 47KT 4021 7521 3990 7524 3951 7539 

HAIL...0.75IN
WIND...70MPH
 
$$

Staarmann

2 follow-up statements

445 
WWUS51 KPHI 071555
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1055 AM EST Fri Feb 7 2020

NJC015-033-PAC091-101-071604-
/O.CAN.KPHI.SV.W.0008.000000T0000Z-200207T1615Z/
Salem NJ-Gloucester NJ-Montgomery PA-Philadelphia PA-
1055 AM EST Fri Feb 7 2020

...THE SEVERE THUNDERSTORM WARNING FOR SALEM...GLOUCESTER...
SOUTHEASTERN MONTGOMERY AND PHILADELPHIA COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3971 7463 3973 7474 3971 7482 3990 7480
      4023 7478 4035 7478 4047 7472 4060 7443
      4060 7421 4050 7428 4045 7417 4024 7416
TIME...MOT...LOC 1554Z 246DEG 47KT 4042 7457 4012 7461 3973 7476 

$$

NJC005-007-021-023-025-029-035-PAC017-071615-
/O.CON.KPHI.SV.W.0008.000000T0000Z-200207T1615Z/
Ocean NJ-Camden NJ-Mercer NJ-Burlington NJ-Somerset NJ-Monmouth NJ-
Middlesex NJ-Bucks PA-
1055 AM EST Fri Feb 7 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EST
FOR NORTHWESTERN OCEAN...EAST CENTRAL CAMDEN...MERCER...CENTRAL
BURLINGTON...SOUTHERN SOMERSET...CENTRAL MONMOUTH...MIDDLESEX AND
EASTERN BUCKS COUNTIES...

At 1054 AM EST, severe thunderstorms were located along a line
extending from Kendall Park to near Crosswicks to near Atsion, moving
northeast at 55 mph.

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

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Trenton, New Brunswick, Perth Amboy, Somerset, Edison, Old Bridge,
Jackson, East Brunswick, South Brunswick, Sayreville, North
Brunswick, Marlboro, Manalapan, Ewing, Medford, Carteret, Holmdel,
Middlesex, Princeton and Mount Holly.

This includes the following highways...
 Garden State Parkway between mile markers 116 and 134.
 Interstate 195 in New Jersey between mile markers 0 and 27.
 Interstate 287 in New Jersey between mile markers 0 and 12.
 Interstate 295 in New Jersey between mile markers 51 and 72.
 New Jersey Turnpike near exit 6, and between exits 7 and 13.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 3971 7463 3973 7474 3971 7482 3990 7480
      4023 7478 4035 7478 4047 7472 4060 7443
      4060 7421 4050 7428 4045 7417 4024 7416
TIME...MOT...LOC 1554Z 246DEG 47KT 4042 7457 4012 7461 3973 7476 

HAIL...0.75IN
WIND...70MPH
 
$$

NC

369 
WWUS51 KPHI 071613
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1113 AM EST Fri Feb 7 2020

NJC005-007-021-023-025-029-035-PAC017-071622-
/O.EXP.KPHI.SV.W.0008.000000T0000Z-200207T1615Z/
Ocean NJ-Camden NJ-Mercer NJ-Burlington NJ-Somerset NJ-Monmouth NJ-
Middlesex NJ-Bucks PA-
1113 AM EST Fri Feb 7 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OCEAN...EAST
CENTRAL CAMDEN...MERCER...CENTRAL BURLINGTON...SOUTHERN SOMERSET...
CENTRAL MONMOUTH...MIDDLESEX AND EASTERN BUCKS COUNTIES WILL EXPIRE
AT 1115 AM EST...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

Remember, a Severe Thunderstorm Warning still remains in effect for
portions of Monmouth and Middlesex counties until 1145 AM.

LAT...LON 3971 7463 3973 7474 3971 7482 3990 7480
      4023 7478 4035 7478 4047 7472 4060 7443
      4060 7421 4050 7428 4045 7417 4024 7416
TIME...MOT...LOC 1612Z 246DEG 47KT 4051 7430 4021 7435 3982 7450 

$$

NC

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 6, 8:13 PM EST	Storm Warning	PHI		21 hr
Feb 6, 8:24 PM EST	High Wind Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean	21 hr
Feb 7, 8:03 AM EST	Coastal Flood Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Salem	11 hr
Feb 7, 8:18 AM EST	Coastal Flood Statement	PHI	Ocean	11 hr
Feb 7, 9:36 AM EST	Severe Thunderstorm Warning	PHI	Gloucester, Salem	39 min
Feb 7, 9:39 AM EST	Tornado Warning	PHI	Gloucester, Salem	36 min
Feb 7, 9:43 AM EST	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	62 min
Feb 7, 10:10 AM EST	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more	65 min
Feb 7, 10:43 AM EST	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren	47 min
Feb 7, 11:01 AM EST	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth, Ocean	44 min
Feb 7, 3:27 PM EST	Gale Warning	PHI		9 hr
Feb 7, 6:53 PM EST	Low Water Advisory	PHI		9 hr
Feb 7, 4:00 AM EST	Winter Weather Advisory	PHI	Carbon, Monroe	14 hr
Feb 7, 8:52 AM EST	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	53 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2020 Severe Thunderstorm Warnings in Pennsylvania, 2020 Every severe thunderstorm warning in 2020

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.