Alert archive / New Jersey / Tornado Warnings in 2018

Tornado Warning 10, NWS Philadelphia/Mount Holly

November 2, 20184 counties in New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this tornado warning at Nov 2, 2018, 11:49 PM EDT for 4 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 26 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: Nov 2, 2018, 11:49 PM EDT (03:49 UTC)
Expired: Nov 3, 2018, 12:15 AM EDT
In force: 26 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Somerset County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 03:51 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 3.8 hours before the alert went out and 165 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: 141 J/kg
Mixed-layer CIN: -110 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 210 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

808 
WFUS51 KPHI 030349
TORPHI
NJC019-021-023-035-PAC017-030430-
/O.NEW.KPHI.TO.W.0010.181103T0349Z-181103T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
1149 PM EDT FRI NOV 2 2018

The National Weather Service in Mount Holly NJ has issued a

* Tornado Warning for...
  Southeastern Hunterdon County in northwestern New Jersey...
  Northwestern Mercer County in central New Jersey...
  Somerset County in northern New Jersey...
  North central Middlesex County in northern New Jersey...
  Central Bucks County in southeastern Pennsylvania...

* Until 1230 AM EDT.
    
* At 1149 PM EDT, a severe thunderstorm capable of producing a
  tornado was located over Gardenville, or 20 miles northwest of
  Trenton, moving northeast at 35 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.

* This dangerous storm will be near...
  Byram and Lumberville around 1155 PM EDT.
  New Hope, Stockton and Erwinna around 1200 AM EDT.
  Sergeantsville around 1205 AM EDT.
  Sand Brook around 1210 AM EDT.
  Flemington around 1215 AM EDT.
  Cloverhill around 1220 AM EDT.
  Belle Mead around 1225 AM EDT.
  Somerville, Bridgewater, Manville, Flagtown and White House 
  Station around 1230 AM EDT.

Other locations impacted by this tornadic thunderstorm include South
Bound Brook, Raritan, Lambertville and Bernardsville.

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 4053 7446 4025 7511 4040 7524 4073 7470
      4074 7465
TIME...MOT...LOC 0349Z 236DEG 32KT 4037 7510 

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

$$

SFJ

2 follow-up statements

012 
WWUS51 KPHI 030407
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1207 AM EDT SAT NOV 3 2018

PAC017-030416-
/O.CAN.KPHI.TO.W.0010.000000T0000Z-181103T0430Z/
Bucks PA-
1207 AM EDT SAT NOV 3 2018

...THE TORNADO WARNING FOR CENTRAL BUCKS COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 4053 7446 4034 7491 4049 7507 4050 7507
      4052 7505 4073 7470 4074 7465
TIME...MOT...LOC 0406Z 236DEG 32KT 4046 7493 

$$

NJC019-021-023-035-030430-
/O.CON.KPHI.TO.W.0010.000000T0000Z-181103T0430Z/
Hunterdon NJ-Mercer NJ-Somerset NJ-Middlesex NJ-
1207 AM EDT SAT NOV 3 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT FOR
SOUTHEASTERN HUNTERDON...NORTHWESTERN MERCER...SOMERSET AND NORTH
CENTRAL MIDDLESEX COUNTIES...
    
At 1206 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Sergeantsville, or 18 miles southwest of Somerville,
moving northeast at 35 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...
Somerville, Somerset, Bridgewater, Middlesex, Bound Brook, Manville,
Flemington, Peapack And Gladstone, Frenchtown, Lebanon, Far Hills,
Stockton, Millstone, Flagtown, Belle Mead, Martinsville,
Sergeantsville, Cloverhill, White House Station and Sand Brook.

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 4053 7446 4034 7491 4049 7507 4050 7507
      4052 7505 4073 7470 4074 7465
TIME...MOT...LOC 0406Z 236DEG 32KT 4046 7493 

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

$$

SFJ

133 
WWUS51 KPHI 030415
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1215 AM EDT SAT NOV 3 2018

NJC019-021-023-035-030425-
/O.CAN.KPHI.TO.W.0010.000000T0000Z-181103T0430Z/
Hunterdon NJ-Mercer NJ-Somerset NJ-Middlesex NJ-
1215 AM EDT SAT NOV 3 2018

...THE TORNADO WARNING FOR SOUTHEASTERN HUNTERDON...NORTHWESTERN
MERCER...SOMERSET AND NORTH CENTRAL MIDDLESEX COUNTIES IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this storm.

LAT...LON 4053 7446 4034 7491 4049 7507 4050 7507
      4052 7505 4073 7470 4074 7465
TIME...MOT...LOC 0413Z 236DEG 32KT 4051 7484 

$$

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 2, 8:22 PM EDT	Areal Flood Advisory	PHI	Warren	4 hr
Nov 2, 9:26 PM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	4 hr
Nov 2, 9:28 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Warren	4 hr
Nov 2, 10:45 PM EDT	Areal Flood Warning	PHI	Hunterdon, Warren	13 hr
Nov 2, 10:53 PM EDT	Flash Flood Warning	PHI	Hunterdon, Warren	4 hr
Nov 2, 10:53 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	67 min
Nov 2, 11:13 PM EDT	Special Marine Warning	PHI		62 min
Nov 2, 11:43 PM EDT	Special Weather Statement	PHI	Cumberland	32 min
Nov 2, 11:53 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Morris, Somerset	4 hr
Nov 3, 12:09 AM EDT	Special Marine Warning	PHI		66 min
Nov 3, 12:13 AM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	62 min
Nov 3, 12:18 AM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Somerset, Warren	27 min
Nov 3, 12:20 AM EDT	Areal Flood Advisory	PHI	Warren	4 hr
Nov 3, 1:00 AM EDT	Special Weather Statement	PHI	Camden, Hunterdon, Mercer, Middlesex, Morris, Somerset	60 min
Nov 3, 1:06 AM EDT	Special Marine Warning	PHI		54 min
Nov 3, 1:29 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Sussex, Warren	4 hr
Nov 3, 1:29 AM EDT	Special Marine Warning	PHI		91 min
Nov 3, 1:41 AM EDT	Areal Flood Advisory	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset	4 hr
Nov 3, 2:00 AM EDT	River Flood Warning	PHI	Morris, Passaic	37 hr
Nov 3, 2:34 AM EDT	Areal Flood Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	15 hr
Nov 3, 3:15 AM EDT	River Flood Warning	PHI	Hunterdon, Somerset	4 hr
Nov 3, 11:44 AM EDT	Areal Flood Warning	PHI	Hunterdon, Warren	8 hr
Nov 3, 5:19 PM EDT	Areal Flood Warning	PHI	Morris, Sussex, Warren	22 hr
Nov 3, 5:54 PM EDT	Small Craft Advisory	PHI		12 hr
Nov 2, 9:48 PM EDT	Special Weather Statement	PHI	Berks, Chester	27 min
Nov 2, 10:09 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	51 min
Nov 2, 10:32 PM EDT	Tornado Warning	PHI	Berks, Chester, Montgomery	28 min
Nov 2, 10:36 PM EDT	Special Weather Statement	PHI	Northampton	24 min
Nov 2, 10:47 PM EDT	Tornado Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	43 min
Nov 2, 11:23 PM EDT	Tornado Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	24 min
Nov 2, 11:25 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr
Nov 2, 11:53 PM EDT	Special Weather Statement	PHI	Delaware, Philadelphia	37 min
Nov 3, 1:03 AM EDT	River Flood Warning	PHI	Lehigh	5 hr
Nov 3, 2:03 AM EDT	River Flood Warning	PHI	Chester	6 hr
Nov 3, 2:40 AM EDT	River Flood Warning	PHI	Montgomery	10 hr
Nov 3, 2:40 AM EDT	River Flood Warning	PHI	Chester, Montgomery, Philadelphia	15 hr
Nov 3, 3:21 AM EDT	Areal Flood Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr
Nov 3, 5:00 AM EDT	River Flood Warning	PHI	Chester, Delaware	6 hr
Nov 3, 7:01 AM EDT	Areal Flood Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	5 hr

Nearby

Tornado Warnings in New Jersey, 2018 Tornado Warnings in Pennsylvania, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.