Alert archive / New Jersey / Tornado Warnings in 2021

Tornado Warning 5, NWS New York, NY

July 29, 2021Essex County, New Jersey

NWS New York, NY issued this tornado warning at Jul 29, 2021, 5:59 PM EDT for Essex County, New Jersey. It was in force for 9 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: Jul 29, 2021, 5:59 PM EDT (21:59 UTC)
Expired: Jul 29, 2021, 6:08 PM EDT
In force: 9 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Essex County, NJ

The radar

The Philadelphia radar (KDIX), 100 km from the middle of the area, began a volume at 22:02 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 12:00Z, 10.0 hours before the alert went out and 114 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: 54 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 823 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

387 
WFUS51 KOKX 292159
TOROKX
NJC013-292230-
/O.NEW.KOKX.TO.W.0005.210729T2159Z-210729T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New York NY
559 PM EDT Thu Jul 29 2021

The National Weather Service in Upton NY has issued a

* Tornado Warning for...
  Northeastern Essex County in northeastern New Jersey...

* Until 630 PM EDT.
    
* At 559 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Caldwell, moving northeast at 20 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...
  Bloomfield around 610 PM EDT.

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 or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Upton NY.

&&

LAT...LON 4082 7430 4088 7423 4086 7420 4085 7419
      4084 7416 4083 7414 4082 7416 4079 7425
TIME...MOT...LOC 2159Z 236DEG 8KT 4083 7424 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

DS

1 follow-up statement

076 
WWUS51 KOKX 292208
SVSOKX

Severe Weather Statement
National Weather Service New York NY
608 PM EDT Thu Jul 29 2021

NJC013-292218-
/O.CAN.KOKX.TO.W.0005.000000T0000Z-210729T2230Z/
Essex NJ-
608 PM EDT Thu Jul 29 2021

...THE TORNADO WARNING FOR NORTHEASTERN ESSEX COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore, the warning has been cancelled.

LAT...LON 4082 7430 4088 7423 4086 7420 4085 7419
      4084 7416 4083 7414 4082 7416 4079 7425
TIME...MOT...LOC 2207Z 236DEG 8KT 4084 7422 

$$

DS

The office that day

Everything else NWS New York, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 29, 4:59 PM EDT	Special Weather Statement	OKX	Essex	46 min
Jul 29, 5:36 PM EDT	Tornado Warning	OKX	Essex	24 min
Jul 29, 5:44 PM EDT	Areal Flood Advisory	OKX	Essex	63 min
Jul 29, 6:47 PM EDT	Flash Flood Warning	OKX	Essex	3 hr
Jul 29, 7:15 PM EDT	Areal Flood Advisory	OKX	Bergen, Hudson, Passaic	2 hr

Nearby

Tornado Warnings in New Jersey, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.