Alert archive / New Jersey / Tornado Warnings in 2023

Tornado Warning 6, NWS Philadelphia/Mount Holly

April 1, 2023Philadelphia County, Pennsylvania; Burlington County, Camden County, New Jersey

NWS Philadelphia/Mount Holly issued this tornado warning at Apr 1, 2023, 6:57 PM EDT for Philadelphia County, Pennsylvania; Burlington County, Camden County, New Jersey. It was in force for 33 min. 14 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: Apr 1, 2023, 6:57 PM EDT (22:57 UTC)
Expired: Apr 1, 2023, 7:30 PM EDT
In force: 33 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Burlington County, NJ, Camden County, NJ, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 36 km from the middle of the area, began a volume at 22:57 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
Apr 1, 6:59 PM EDT	TORNADO	1 Ese Riverton, NJ	SURVEY SUMMARY: A TORNADO FORMED ALONG A LINE OF THUNDERSTORMS AND MADE INITIAL TOUCHDOWN IN CINNAMINSON, NJ, NEAR THE INTERSECTION OF RIVERTON ROAD AND WOODSIDE LANE WHERE MULTIPLE TREES WERE SNAPPED AND UPROOTED. IT THEN TRAVELED EAST-SOUTHEAST TOWARDS CINNA
Apr 1, 7:04 PM EDT	TSTM WND DMG	2 S Rancocas, NJ	A FEW SMALL TREES UPROOTED AND SECTIONS OF VINYL FENCING BLOWN OUT. LIKELY FROM THE RFD OF THE UPSTREAM TORNADO. TIME ESTIMATED FROM RADAR.
Apr 1, 7:05 PM EDT	TSTM WND DMG	1 E New Albany, NJ	LARGE AMOUNT OF TREE DAMAGE FROM RIVERTON COUNTRY CLUB ALONG A STRAIGHT LINE TO PARRY ROAD, TENBY CHASE DRIVE, AND HAINES MILL ROAD IN DELRAN. TORNADO POSSIBLE. TIME ESTIMATED VIA RADAR.
Apr 1, 7:05 PM EDT	TSTM WND GST 60	Moorestown, NJ
Apr 1, 7:08 PM EDT	TSTM WND DMG	1 E New Albany, NJ	PICTURES OF TREES AND FENCES DOWNED. TIME ESTIMATED VIA RADAR.
Apr 1, 7:11 PM EDT	HAIL 0.5	Fellowship, NJ	REPORT FROM MPING: HALF-INCH (0.50 IN.).
Apr 1, 7:12 PM EDT	TSTM WND DMG	1 Ne Cinnaminson, NJ	LARGE AMOUNT OF TREES DOWN IN THE NEIGHBORHOOD AROUND LOCUST LANE. TIME ESTIMATED VIA RADAR.
Apr 1, 7:12 PM EDT	TSTM WND DMG	Cinnaminson, NJ	TREES BLOCKING RIVERTON ROAD. TIME ESTIMATED VIA RADAR.
Apr 1, 7:16 PM EDT	HAIL 0.5	1 E Lawndale, PA
Apr 1, 7:18 PM EDT	TSTM WND DMG	1 Nne Ellisburg, NJ	TREES DOWNED ON SPRINGDALE ROAD NEAR CHURCH ROAD AND ROUTE 70.
Apr 1, 7:20 PM EDT	HAIL 0.25	2 S Jacobstown, NJ
Apr 1, 7:21 PM EDT	HAIL 0.5	1 E Lumberton Twp, NJ	REPORT FROM MPING: HALF-INCH (0.50 IN.).
Apr 1, 7:23 PM EDT	HAIL 0.5	1 Sw Vincentown, NJ	REPORT FROM MPING: HALF-INCH (0.50 IN.).
Apr 1, 7:26 PM EDT	HAIL 0.75	2 Se Eastampton Twp, NJ	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
Apr 1, 5:30 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.0 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.

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: 2079 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 321 m²/s²
0-3 km storm-relative helicity: 332 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

757 
WFUS51 KPHI 012257
TORPHI
NJC005-007-PAC101-012330-
/O.NEW.KPHI.TO.W.0006.230401T2257Z-230401T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
657 PM EDT Sat Apr 1 2023

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  North central Camden County in southern New Jersey...
  Central Burlington County in southern New Jersey...
  East central Philadelphia County in southeastern Pennsylvania...

* Until 730 PM EDT.
    
* At 657 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Palmyra, or near Philadelphia, moving southeast at
  50 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Philadelphia, Mount Laurel, Willingboro, Medford, Lumberton,
  Burlington, Mount Holly, Riverside, Palmyra, Tabernacle, Shamong,
  Beverly, Pemberton, Wrightstown, Wissinoming, Ramblewood, Cherry
  Hill Mall, Tacony, Marlton and Leisuretowne.

This includes the following highways...
 New Jersey Turnpike between exits 4 and 5.
 Interstate 95 in Pennsylvania between mile markers 26 and 33.
 Interstate 295 in New Jersey between mile markers 36 and 49.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3976 7468 3998 7509 4007 7506 4007 7498
      4005 7497 4007 7494 4005 7453 4004 7453
TIME...MOT...LOC 2257Z 293DEG 45KT 4000 7500 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Staarmann

2 follow-up statements

692 
WWUS51 KPHI 012303
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
703 PM EDT Sat Apr 1 2023

NJC007-PAC101-012313-
/O.CAN.KPHI.TO.W.0006.000000T0000Z-230401T2330Z/
Camden NJ-Philadelphia PA-
703 PM EDT Sat Apr 1 2023

...THE TORNADO WARNING FOR NORTH CENTRAL CAMDEN AND EAST CENTRAL
PHILADELPHIA COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened. 
moved out of the warned area. Therefore, the warning has been 
cancelled.

A Tornado Watch remains in effect until 1000 PM EDT for southern New
Jersey...and southeastern Pennsylvania.

LAT...LON 3984 7464 3991 7495 3993 7498 3994 7498
      3995 7501 4005 7497 4007 7494 4005 7455
      4005 7453
TIME...MOT...LOC 2303Z 283DEG 49KT 4000 7490 

$$

NJC005-012330-
/O.CON.KPHI.TO.W.0006.000000T0000Z-230401T2330Z/
Burlington NJ-
703 PM EDT Sat Apr 1 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR NORTHERN
BURLINGTON COUNTY...

At 703 PM EDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Willingboro, or 11 miles east of Camden, moving east at 55 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Mount Laurel, Willingboro, Medford, Lumberton, Burlington, Mount
Holly, Riverside, Beverly, Pemberton, Wrightstown, Ramblewood,
Leisuretowne, Jacksonville, Jobstown, Browns Mills, Marlton, Cherry
Hill Mall, Maple Shade, Edgewater Park and Delanco.

This includes the following highways...
 New Jersey Turnpike between exits 4 and 5.
 Interstate 295 in New Jersey between mile markers 37 and 49.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3984 7464 3991 7495 3993 7498 3994 7498
      3995 7501 4005 7497 4007 7494 4005 7455
      4005 7453
TIME...MOT...LOC 2303Z 283DEG 49KT 4000 7490 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Staarmann

346 
WWUS51 KPHI 012316
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
716 PM EDT Sat Apr 1 2023

NJC005-012330-
/O.CON.KPHI.TO.W.0006.000000T0000Z-230401T2330Z/
Burlington NJ-
716 PM EDT Sat Apr 1 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR CENTRAL
BURLINGTON COUNTY...

At 716 PM EDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Leisuretowne, or 20 miles south of Trenton, moving east at 50 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Medford, Pemberton, Wrightstown, Jobstown, Leisuretowne, Browns
Mills, Pemberton Heights, Fort Dix, McGuire AFB and New Egypt.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.

&&

LAT...LON 3988 7484 4006 7470 4005 7455 4005 7453
      3984 7464
TIME...MOT...LOC 2316Z 292DEG 44KT 3994 7471 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 5:27 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Northampton	48 min
Apr 1, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	67 min
Apr 1, 6:04 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	56 min
Apr 1, 6:33 PM EDT	Tornado Warning	PHI	Chester	27 min
Apr 1, 6:37 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	53 min
Apr 1, 6:39 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Chester, Delaware	51 min
Apr 1, 6:45 PM EDT	Tornado Warning	PHI	Bucks	30 min
Apr 1, 7:11 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Philadelphia	64 min
Apr 1, 6:18 PM EDT	Special Marine Warning	PHI		87 min
Apr 1, 6:18 PM EDT	Special Weather Statement	PHI	Morris	42 min
Apr 1, 6:31 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	44 min
Apr 1, 7:05 PM EDT	Special Marine Warning	PHI		55 min
Apr 1, 7:07 PM EDT	Tornado Warning	PHI	Burlington, Mercer, Monmouth, Ocean	38 min
Apr 1, 7:24 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Atlantic, Cape May, Cumberland, Gloucester, Salem	51 min
Apr 1, 7:26 PM EDT	Special Marine Warning	PHI		64 min
Apr 1, 7:27 PM EDT	Special Marine Warning	PHI		93 min
Apr 1, 7:31 PM EDT	Tornado Warning	PHI	Monmouth, Ocean	29 min
Apr 1, 7:33 PM EDT	Tornado Warning	PHI	Burlington, Ocean	27 min
Apr 1, 7:47 PM EDT	Special Marine Warning	PHI		88 min
Apr 1, 7:52 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean	38 min

Nearby

Tornado Warnings in New Jersey, 2023 Tornado Warnings in Pennsylvania, 2023 Every tornado warning in 2023 Tornadoes 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.