Alert archive / New Jersey / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 13, NWS Philadelphia/Mount Holly

February 24, 2016Bucks County, Pennsylvania; 7 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 24, 2016, 11:03 PM EST for Bucks County, Pennsylvania; 7 counties in New Jersey. It was in force for 42 min. 1 report 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 24, 2016, 11:03 PM EST (04:03 UTC)
Expired: Feb 24, 2016, 11:45 PM EST
In force: 42 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Burlington County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 77 km from the middle of the area, began a volume at 04:06 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 24, 11:15 PM EST	TSTM WND DMG	Princeton, NJ	WIRES AND TREES DOWN...TIME ESTIMATED FROM RADAR

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
Feb 24, 3:20 PM EST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 4.1 hours before the alert went out and 129 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: 38 J/kg
Mixed-layer CIN: -81 J/kg
Mixed-layer LCL: 479 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 529 m²/s²
0-3 km storm-relative helicity: 504 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

739 
WUUS51 KPHI 250403
SVRPHI
NJC005-019-021-023-025-027-035-PAC017-250445-
/O.NEW.KPHI.SV.W.0013.160225T0403Z-160225T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1103 PM EST WED FEB 24 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MERCER COUNTY IN CENTRAL NEW JERSEY...
  SOUTHEASTERN HUNTERDON COUNTY IN NORTHWESTERN NEW JERSEY...
  WESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  SOUTHEASTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  EAST CENTRAL BUCKS COUNTY IN SOUTHEASTERN PENNSYLVANIA...

* UNTIL 1145 PM EST

* AT 1103 PM EST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED OVER TRENTON...AND MOVING NORTHEAST AT 100 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TRENTON...NEW BRUNSWICK...PERTH AMBOY...MORRISTOWN...SOMERVILLE...
  SOMERSET...EDISON...OLD BRIDGE...EAST BRUNSWICK...BRIDGEWATER...
  SOUTH BRUNSWICK...SAYREVILLE...NORTH BRUNSWICK...EWING...
  CARTERET...MADISON...MIDDLESEX...PRINCETON...FLORHAM PARK AND EAST
  HANOVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. ALTHOUGH A TORNADO IS
NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EST FOR NEW JERSEY.

LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
      4046 7424 4008 7470 4023 7497 4099 7434
      4100 7430 4090 7427 4091 7433 4083 7433
      4076 7438 4075 7436 4067 7446 4065 7440
      4060 7446 4060 7421
TIME...MOT...LOC 0403Z 215DEG 85KT 4025 7476 

$$
PO

2 follow-up statements

448 
WWUS51 KPHI 250436
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1136 PM EST WED FEB 24 2016

NJC005-019-021-025-PAC017-250446-
/O.CAN.KPHI.SV.W.0013.000000T0000Z-160225T0445Z/
MERCER NJ-HUNTERDON NJ-MONMOUTH NJ-BURLINGTON NJ-BUCKS PA-
1136 PM EST WED FEB 24 2016

...THE SEVERE THUNDERSTORM WARNING FOR MERCER...SOUTHEASTERN
HUNTERDON...WESTERN MONMOUTH...NORTH CENTRAL BURLINGTON AND EAST
CENTRAL BUCKS COUNTIES IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
      4046 7424 4040 7432 4059 7462 4099 7434
      4100 7430 4090 7427 4091 7433 4083 7433
      4076 7438 4075 7436 4067 7446 4065 7440
      4060 7446 4060 7421
TIME...MOT...LOC 0436Z 215DEG 85KT 4089 7417 

$$

NJC023-027-035-250445-
/O.CON.KPHI.SV.W.0013.000000T0000Z-160225T0445Z/
SOMERSET NJ-MORRIS NJ-MIDDLESEX NJ-
1136 PM EST WED FEB 24 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EST
FOR NORTHEASTERN SOMERSET...SOUTHEASTERN MORRIS AND NORTHEASTERN
MIDDLESEX COUNTIES...

AT 1136 PM EST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
WAS LOCATED OVER PATERSON...MOVING NORTHEAST AT 100 MPH.

LOCATIONS IMPACTED INCLUDE...
NEW BRUNSWICK...PERTH AMBOY...MORRISTOWN...SOMERVILLE...SOMERSET...
EDISON...OLD BRIDGE...EAST BRUNSWICK...SAYREVILLE...CARTERET...
MADISON...MIDDLESEX...FLORHAM PARK...EAST HANOVER...LINCOLN PARK...
BOUND BROOK...CHATHAM...BOONTON...RIVERDALE AND SOCIETY HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. ALTHOUGH A
TORNADO IS NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY
AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM EST FOR NORTHERN NEW
JERSEY.

LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
      4046 7424 4040 7432 4059 7462 4099 7434
      4100 7430 4090 7427 4091 7433 4083 7433
      4076 7438 4075 7436 4067 7446 4065 7440
      4060 7446 4060 7421
TIME...MOT...LOC 0436Z 215DEG 85KT 4089 7417 

$$

PO

505 
WWUS51 KPHI 250439
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1139 PM EST WED FEB 24 2016

NJC023-027-035-250448-
/O.EXP.KPHI.SV.W.0013.000000T0000Z-160225T0445Z/
SOMERSET NJ-MORRIS NJ-MIDDLESEX NJ-
1139 PM EST WED FEB 24 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SOMERSET...
SOUTHEASTERN MORRIS AND NORTHEASTERN MIDDLESEX COUNTIES WILL EXPIRE
AT 1145 PM EST...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
      4046 7424 4040 7432 4059 7462 4099 7434
      4100 7430 4090 7427 4091 7433 4083 7433
      4076 7438 4075 7436 4067 7446 4065 7440
      4060 7446 4060 7421
TIME...MOT...LOC 0437Z 215DEG 85KT 4089 7417 

$$

GORSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 7:12 PM EST	Severe Thunderstorm Warning	PHI	Chester, Delaware	33 min
Feb 24, 7:21 PM EST	Areal Flood Advisory	PHI	Chester	4 hr
Feb 24, 7:35 PM EST	Areal Flood Advisory	PHI	Carbon, Monroe	6 hr
Feb 24, 7:39 PM EST	Severe Thunderstorm Warning	PHI	Berks, Chester	36 min
Feb 24, 8:13 PM EST	Special Weather Statement	PHI	Chester, Montgomery	62 min
Feb 24, 8:23 PM EST	Special Weather Statement	PHI	Lehigh, Monroe, Northampton	67 min
Feb 24, 8:42 PM EST	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Lehigh, Monroe, Montgomery and 2 more	4 hr
Feb 24, 8:47 PM EST	Severe Thunderstorm Warning	PHI	Chester	43 min
Feb 24, 9:18 PM EST	Areal Flood Advisory	PHI	Bucks	4 hr
Feb 24, 9:40 PM EST	Severe Thunderstorm Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	35 min
Feb 24, 9:44 PM EST	Areal Flood Warning	PHI	Berks, Chester, Montgomery	10 hr
Feb 24, 9:55 PM EST	Flash Flood Warning	PHI	Bucks, Lehigh, Monroe, Northampton	4 hr
Feb 24, 10:05 PM EST	Flash Flood Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr
Feb 24, 10:11 PM EST	River Flood Warning	PHI	Chester	20 hr
Feb 24, 10:32 PM EST	Flash Flood Warning	PHI	Bucks	4 hr
Feb 25, 12:19 AM EST	River Flood Warning	PHI	Montgomery	14 hr
Feb 25, 12:28 AM EST	River Flood Warning	PHI	Chester, Delaware	18 hr
Feb 25, 12:37 AM EST	River Flood Warning	PHI	Chester, Montgomery, Philadelphia	28 hr
Feb 25, 1:55 AM EST	Areal Flood Warning	PHI	Bucks, Lehigh, Monroe, Northampton	6 hr
Feb 25, 2:04 AM EST	Areal Flood Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	4 hr
Feb 25, 2:07 AM EST	River Flood Warning	PHI	Berks, Montgomery	8 hr
Feb 25, 2:22 AM EST	Areal Flood Warning	PHI	Bucks	8 hr
Feb 25, 7:41 AM EST	Areal Flood Warning	PHI	Berks, Chester, Montgomery	6 hr
Feb 25, 7:51 AM EST	Areal Flood Warning	PHI	Bucks, Lehigh, Monroe, Northampton	6 hr
Feb 24, 7:10 PM EST	Flash Flood Warning	PHI	Mercer, Middlesex, Monmouth, Somerset	3 hr
Feb 24, 8:48 PM EST	Areal Flood Advisory	PHI	Cumberland, Gloucester, Salem	4 hr
Feb 24, 9:02 PM EST	Special Marine Warning	PHI		58 min
Feb 24, 9:24 PM EST	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more	4 hr
Feb 24, 10:06 PM EST	Special Weather Statement	PHI	Sussex	39 min
Feb 24, 10:19 PM EST	Special Marine Warning	PHI		56 min
Feb 24, 10:26 PM EST	Special Weather Statement	PHI	Sussex	34 min
Feb 24, 10:36 PM EST	Special Weather Statement	PHI	Atlantic, Ocean	39 min
Feb 24, 10:49 PM EST	Areal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Monmouth, Ocean	4 hr
Feb 24, 10:51 PM EST	Special Weather Statement	PHI	Mercer, Middlesex, Morris, Somerset	54 min
Feb 24, 11:11 PM EST	Special Weather Statement	PHI	Monmouth, Ocean	64 min
Feb 24, 11:22 PM EST	Special Marine Warning	PHI		53 min
Feb 24, 11:25 PM EST	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	15 min
Feb 25, 12:04 AM EST	Special Weather Statement	PHI	Atlantic, Monmouth, Ocean	56 min
Feb 25, 2:26 AM EST	River Flood Warning	PHI	Somerset	33 hr
Feb 25, 2:31 AM EST	River Flood Warning	PHI	Morris, Passaic	31 hr
Feb 25, 10:02 AM EST	River Flood Warning	PHI	Morris	25 hr
Feb 25, 10:13 AM EST	Areal Flood Warning	PHI	Somerset	6 hr
Feb 25, 12:37 PM EST	Areal Flood Warning	PHI	Sussex, Warren	8 hr
Feb 25, 3:28 PM EST	Areal Flood Warning	PHI	Somerset	14 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2016 Severe Thunderstorm Warnings in Pennsylvania, 2016 Every severe thunderstorm warning in 2016

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.