Alert archive / New Jersey / Tornado Warnings in 2023

Tornado Warning 15, NWS Philadelphia/Mount Holly

June 26, 2023Hunterdon County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this tornado warning at Jun 26, 2023, 3:17 PM EDT for Hunterdon County, Somerset County, New Jersey. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 26, 2023, 3:17 PM EDT (19:17 UTC)
Expired
Jun 26, 2023, 3:45 PM EDT
In force
28 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Hunterdon County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 73 km from the middle of the area, began a volume at 19:20 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 26, 1:11 PM EDTSevere Thunderstorm WatchSPC11 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.3 hours before the alert went out and 167 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2023-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 369 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2023-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
369 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
807 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

010 
WFUS51 KPHI 261917
TORPHI
NJC019-035-261945-
/O.NEW.KPHI.TO.W.0015.230626T1917Z-230626T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
317 PM EDT Mon Jun 26 2023

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  Eastern Hunterdon County in northwestern New Jersey...
  Northwestern Somerset County in northern New Jersey...

* Until 345 PM EDT.
    
* At 317 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Flemington, or 12 miles west of Somerville, moving
  northeast at 25 mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Somerville, Bridgewater, Flemington, Lebanon, Cloverhill, White
  House Station and Raritan.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 21 and 31.
 Interstate 287 in New Jersey between mile markers 16 and 21.

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 4043 7484 4049 7495 4073 7478 4060 7456
TIME...MOT...LOC 1917Z 219DEG 22KT 4051 7483 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

MJL
2 follow-up statements
784 
WWUS51 KPHI 261928 RRA
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
328 PM EDT Mon Jun 26 2023

NJC019-035-261945-
/O.CON.KPHI.TO.W.0015.000000T0000Z-230626T1945Z/
Hunterdon NJ-Somerset NJ-
328 PM EDT Mon Jun 26 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR
NORTHEASTERN HUNTERDON AND NORTHWESTERN SOMERSET COUNTIES...
    
At 328 PM EDT, a severe thunderstorm capable of producing a tornado
was located near White House Station, or 8 miles west of Somerville,
moving northeast at 25 mph.

HAZARD...Tornado and quarter size hail.

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...
Somerville, Bridgewater, Flemington, Lebanon, Cloverhill, White House
Station and Raritan.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 21 and 31.
 Interstate 287 in New Jersey between mile markers 16 and 21.

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 4048 7478 4053 7492 4073 7478 4060 7456
TIME...MOT...LOC 1928Z 219DEG 22KT 4056 7477 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

MJL
860 
WWUS51 KPHI 261942
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
342 PM EDT Mon Jun 26 2023

NJC019-035-261951-
/O.EXP.KPHI.TO.W.0015.000000T0000Z-230626T1945Z/
Hunterdon NJ-Somerset NJ-
342 PM EDT Mon Jun 26 2023

...THE TORNADO WARNING FOR NORTHEASTERN HUNTERDON AND NORTHWESTERN
SOMERSET COUNTIES WILL EXPIRE AT 345 PM EDT...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.  

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern and northwestern New Jersey.

Remember, a Severe Thunderstorm Warning still remains in effect for 
northeastern Hunterdon and northwestern Somerset counties until 430 
PM EDT

LAT...LON 4048 7478 4053 7492 4073 7478 4060 7456
TIME...MOT...LOC 1941Z 219DEG 22KT 4061 7471 

$$

MJL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 3:19 AM EDTSmall Craft AdvisoryPHI63 hr
Jun 26, 3:33 AM EDTFlood WatchPHIHunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more23 hr
Jun 26, 9:18 AM EDTSevere Thunderstorm WarningPHIWarren42 min
Jun 26, 9:47 AM EDTSevere Thunderstorm WarningPHIMorris, Sussex, Warren43 min
Jun 26, 10:16 AM EDTSpecial Weather StatementPHICamden14 min
Jun 26, 10:43 AM EDTSpecial Weather StatementPHISussex32 min
Jun 26, 11:18 AM EDTSpecial Weather StatementPHISussex27 min
Jun 26, 11:53 AM EDTSpecial Weather StatementPHIMiddlesex22 min
Jun 26, 11:57 AM EDTSevere Thunderstorm WarningPHISussex18 min
Jun 26, 12:22 PM EDTSpecial Weather StatementPHIMiddlesex38 min
Jun 26, 2:02 PM EDTSpecial Weather StatementPHIHunterdon28 min
Jun 26, 2:32 PM EDTSpecial Marine WarningPHI43 min
Jun 26, 2:40 PM EDTSpecial Weather StatementPHIHunterdon35 min
Jun 26, 2:49 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Somerset, Warren41 min
Jun 26, 2:54 PM EDTAreal Flood AdvisoryPHIHunterdon95 min
Jun 26, 2:58 PM EDTSevere Thunderstorm WarningPHISussex, Warren47 min
Jun 26, 3:01 PM EDTSpecial Weather StatementPHICumberland29 min
Jun 26, 3:02 PM EDTTornado WarningPHIWarren28 min
Jun 26, 3:04 PM EDTSevere Thunderstorm WarningPHIMorris, Somerset41 min
Jun 26, 3:21 PM EDTSpecial Weather StatementPHICamden24 min
Jun 26, 3:28 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden32 min
Jun 26, 3:40 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Somerset, Sussex50 min
Jun 26, 3:45 PM EDTSpecial Weather StatementPHIBurlington30 min
Jun 26, 3:48 PM EDTSevere Thunderstorm WarningPHIBurlington42 min
Jun 26, 3:56 PM EDTAreal Flood AdvisoryPHISussex, Warren2 hr
Jun 26, 3:59 PM EDTSpecial Weather StatementPHISussex, Warren46 min
Jun 26, 4:14 PM EDTSpecial Weather StatementPHIMercer31 min
Jun 26, 4:16 PM EDTAreal Flood AdvisoryPHIMorris, Somerset101 min
Jun 26, 4:24 PM EDTSpecial Weather StatementPHIBurlington36 min
Jun 26, 4:50 PM EDTAreal Flood AdvisoryPHIWarren73 min
Jun 26, 4:50 PM EDTSpecial Marine WarningPHI40 min
Jun 26, 5:01 PM EDTAreal Flood AdvisoryPHIMorris56 min
Jun 26, 5:09 PM EDTSevere Thunderstorm WarningPHICumberland, Salem25 min
Jun 26, 5:09 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Morris, Somerset39 min
Jun 26, 5:22 PM EDTSpecial Marine WarningPHI23 min
Jun 26, 5:55 PM EDTFlash Flood WarningPHIHunterdon, Morris, Somerset, Sussex6 hr
Jun 26, 6:00 PM EDTAreal Flood AdvisoryPHIWarren4 hr
Jun 26, 6:03 PM EDTFlash Flood WarningPHIWarren6 hr
Jun 26, 6:08 PM EDTSpecial Weather StatementPHIHunterdon37 min
Jun 26, 6:15 PM EDTSpecial Weather StatementPHISalem30 min
Jun 26, 6:16 PM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Sussex, Warren51 min
Jun 26, 6:55 PM EDTSpecial Weather StatementPHIHunterdon35 min
Jun 26, 7:07 PM EDTFlash Flood WarningPHIHunterdon, Morris, Sussex, Warren5 hr

Nearby

Tornado Warnings in New Jersey, 2023Every tornado warning in 2023Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.