Alert archive / New Jersey / Tornado Warnings in 2023

Tornado Warning 5, NWS Philadelphia/Mount Holly

April 1, 2023Burlington County, Mercer County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this tornado warning at Apr 1, 2023, 6:45 PM EDT for Burlington County, Mercer County, New Jersey; Bucks County, Pennsylvania. It was in force for 30 min. 9 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, 6:45 PM EDT (22:45 UTC)
Expired: Apr 1, 2023, 7:15 PM EDT
In force: 30 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Burlington County, NJ, Mercer County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 52 km from the middle of the area, began a volume at 22:44 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, 6:46 PM EDT	TORNADO	1 S Wrightstown Twp, PA	SEVERAL TREES WERE UPROOTED AND SNAPPED ON THE SOUTH SIDE OF WRIGHTSTOWN TOWNSHIP. AS THE TORNADO PROGRESSED SOUTHEAST NEAR SWAMP ROAD ADDITIONAL TREE DAMAGE OCCURRED IN RESIDENTIAL AREAS AS WELL AS ON THE BUCKS COUNTY COMMUNITY COLLEGE CAMPUS. THE MAXIMUM EST
Apr 1, 6:51 PM EDT	TSTM WND DMG	Langhorne, PA	PICTURES OF TREES AND FENCING DOWN IN LANGHORNE, PA. TIME ESTIMATED VIA RADAR.
Apr 1, 6:54 PM EDT	HAIL 1	Lower Makefield Twp, PA	PICTURE OF QUARTER SIZED HAIL IN LOWER MAKEFIELD TOWNSHIP. TIME ESTIMATED VIA RADAR.
Apr 1, 6:54 PM EDT	HAIL 1	Morrisville, PA	QUARTER SIZED HAIL PICTURES FROM TRAINED SPOTTER.
Apr 1, 6:58 PM EDT	TSTM WND DMG	2 Nne Ewing, NJ	REPORT OF LARGE TREE DOWN BLOCKING THE OFFRAMP ON I-295 TO ROUTE 31. TIME ESTIMATED VIA RADAR.
Apr 1, 7:01 PM EDT	HAIL 0.5	1 N Yardley, NJ	REPORT FROM MPING: HALF-INCH (0.50 IN.).
Apr 1, 7:06 PM EDT	TSTM WND DMG	2 Ese Trenton, NJ	PICTURES OF LARGE TREES DOWNED ON LALOR STREET IN HAMILTON, NJ. TIME ESTIMATED VIA RADAR.
Apr 1, 7:06 PM EDT	HAIL 1	Mercerville, NJ	TIME ESTIMATED VIA RADAR.
Apr 1, 7:10 PM EDT	HAIL 1	Ewing, NJ	QUARTER SIZED HAIL IN EWING FROM TRAINED SPOTTER. TIME GIVEN IN REPORT.

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, 10.8 hours before the alert went out and 182 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.

081 
WFUS51 KPHI 012245
TORPHI
NJC005-021-PAC017-012315-
/O.NEW.KPHI.TO.W.0005.230401T2245Z-230401T2315Z/

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

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  Central Mercer County in central New Jersey...
  North central Burlington County in southern New Jersey...
  Southeastern Bucks County in southeastern Pennsylvania...

* Until 715 PM EDT.

* At 643 PM EDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located over
  Richboro, or 13 miles west of Trenton, moving east at 40 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...
  Trenton, Ewing, Princeton, Bordentown, Pennington, Yardley,
  Newtown, Tullytown, Langhorne, Ivyland, Washington Crossing,
  Woodside, Richboro, White Horse, Mercerville-Hamilton Square,
  Langhorn, Levittown, Lawrenceville, Florence-Roebling and
  Morrisville.

This includes the following highways...
 New Jersey Turnpike between exits 7 and 7A.
 Interstate 195 in New Jersey between mile markers 0 and 2.
 Interstate 295 in New Jersey between mile markers 55 and 76.

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 4010 7469 4019 7510 4035 7507 4035 7494
      4034 7494 4035 7485 4035 7464
TIME...MOT...LOC 2243Z 278DEG 33KT 4026 7502 

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

$$

Staarmann

2 follow-up statements

480 
WWUS51 KPHI 012250
SVSPHI

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

NJC005-021-PAC017-012315-
/O.CON.KPHI.TO.W.0005.000000T0000Z-230401T2315Z/
Mercer NJ-Burlington NJ-Bucks PA-
650 PM EDT Sat Apr 1 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM EDT FOR CENTRAL
MERCER...NORTH CENTRAL BURLINGTON AND SOUTHEASTERN BUCKS COUNTIES...

At 650 PM EDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Newtown, or 9 miles west of Trenton, moving east at 40 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...
Trenton, Ewing, Princeton, Bordentown, Pennington, Yardley, Newtown,
Tullytown, Langhorne, Washington Crossing, Woodside, Richboro, White
Horse, Mercerville-Hamilton Square, Langhorn, Levittown,
Lawrenceville, Florence-Roebling, Morrisville and Penndel.

This includes the following highways...
 New Jersey Turnpike between exits 7 and 7A.
 Interstate 195 in New Jersey between mile markers 0 and 2.
 Interstate 295 in New Jersey between mile markers 55 and 76.

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 4018 7504 4035 7501 4035 7494 4034 7494
      4035 7485 4035 7464 4010 7469
TIME...MOT...LOC 2250Z 278DEG 33KT 4025 7493 

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

$$

Staarmann

545 
WWUS51 KPHI 012304
SVSPHI

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

NJC005-021-PAC017-012315-
/O.CON.KPHI.TO.W.0005.000000T0000Z-230401T2315Z/
Mercer NJ-Burlington NJ-Bucks PA-
704 PM EDT Sat Apr 1 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM EDT FOR SOUTH
CENTRAL MERCER...NORTH CENTRAL BURLINGTON AND SOUTHEASTERN BUCKS
COUNTIES...

At 704 PM EDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
White Horse, or near Trenton, moving east at 40 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...
Trenton, Ewing, Bordentown, Tullytown, Mercerville-Hamilton Square,
White Horse, Levittown, Florence-Roebling, Morrisville, Fieldsboro,
Fairless Hills and Yardville-Groveville.

This includes the following highways...
 New Jersey Turnpike between exits 7 and 7A.
 Interstate 195 in New Jersey between mile markers 0 and 2.
 Interstate 295 in New Jersey between mile markers 55 and 66.

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 4014 7487 4027 7478 4027 7466 4010 7469
TIME...MOT...LOC 2304Z 280DEG 35KT 4017 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, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Warren	67 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, 6:37 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth	53 min
Apr 1, 6:39 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Cumberland, Gloucester, Salem	51 min
Apr 1, 6:57 PM EDT	Tornado Warning	PHI	Burlington, Camden	33 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, 7:11 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Atlantic, Burlington, Camden, Gloucester, Mercer, Middlesex and 2 more	64 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
Apr 1, 5:27 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Northampton	48 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

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.