Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 56, NWS New York, NY

July 17, 2021Essex County, Hudson County, Union County, New Jersey; Kings County, New York County, Richmond County, New York

NWS New York, NY issued this severe thunderstorm warning at Jul 17, 2021, 3:18 PM EDT for Essex County, Hudson County, Union County, New Jersey; Kings County, New York County, Richmond County, New York. 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: Jul 17, 2021, 3:18 PM EDT (19:18 UTC)
Expired: Jul 17, 2021, 4:00 PM EDT
In force: 42 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Essex County, NJ, Hudson County, NJ, Union County, NJ, Kings County, NY, New York County, NY, Richmond County, NY

The radar

The Philadelphia radar (KDIX), 77 km from the middle of the area, began a volume at 19:18 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
Jul 17, 3:48 PM EDT	MARINE TSTM WIND 43	2 Nw Westerleigh, NY

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
Jul 17, 1:13 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.3 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: 1203 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1054 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

258 
WUUS51 KOKX 171918
SVROKX
NJC013-017-039-NYC047-061-085-172000-
/O.NEW.KOKX.SV.W.0056.210717T1918Z-210717T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
318 PM EDT Sat Jul 17 2021

The National Weather Service in Upton NY has issued a

* Severe Thunderstorm Warning for...
  Hudson County in northeastern New Jersey...
  Union County in northeastern New Jersey...
  Southeastern Essex County in northeastern New Jersey...
  Richmond County in southeastern New York...
  Kings County in southeastern New York...
  New York (Manhattan) County in southeastern New York...

* Until 400 PM EDT.

* At 318 PM EDT, severe thunderstorms were located along a line
  extending from near Linden to Carteret to Sayreville, moving east
  at 20 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Severe thunderstorms will be near...
  Elizabeth around 325 PM EDT.
  Newark, Harrison, Todt Hill, Port Richmond and Oakwood around 335 
  PM EDT.
  Bayonne around 340 PM EDT.
  The Verrazano Narrows Bridge, Huguenot, Kearny and Tompkinsville 
  around 345 PM EDT.
  Jersey City and Bay Ridge around 350 PM EDT.
  Hoboken, Coney Island, Union City, Battery Park and Bensonhurst 
  around 355 PM EDT.
  Flatbush, Lower East Side, East Village, SoHo, Brooklyn Heights 
  and Park Slope around 400 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4050 7426 4052 7425 4055 7425 4056 7422
      4059 7421 4060 7422 4059 7429 4061 7430
      4061 7432 4071 7436 4077 7410 4076 7409
      4077 7409 4079 7401 4063 7393 4056 7400
      4060 7403 4053 7410 4050 7423
TIME...MOT...LOC 1918Z 258DEG 17KT 4066 7425 4059 7422 4047 7433 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

Goodman

1 follow-up statement

964 
WWUS51 KOKX 171941
SVSOKX

Severe Weather Statement
National Weather Service New York NY
341 PM EDT Sat Jul 17 2021

NJC013-017-039-NYC047-061-085-172000-
/O.CON.KOKX.SV.W.0056.000000T0000Z-210717T2000Z/
Hudson NJ-Union NJ-Essex NJ-Richmond NY-Kings NY-
New York (Manhattan) NY-
341 PM EDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR HUDSON...EASTERN UNION...SOUTHEASTERN ESSEX...RICHMOND...KINGS
AND NEW YORK (MANHATTAN) COUNTIES...

At 341 PM EDT, severe thunderstorms were located along a line
extending from Newark to near The Verrazano Narrows Bridge to
Tottenville, moving east at 25 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

These severe storms will be near...
  Bayonne, Harrison, The Verrazano Narrows Bridge and Tompkinsville 
  around 345 PM EDT.
  Jersey City, Linden, Bay Ridge, Kearny and Bensonhurst around 350 
  PM EDT.
  Hoboken, Battery Park and Park Slope around 355 PM EDT.
  Flatbush, Lower East Side, Union City, East Village, SoHo and 
  Brooklyn Heights around 400 PM EDT.
  Coney Island around 415 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4052 7425 4055 7425 4056 7422 4059 7421
      4060 7422 4060 7424 4073 7427 4077 7411
      4076 7409 4077 7408 4079 7401 4063 7393
      4056 7400 4060 7403 4053 7410 4050 7422
      4050 7426
TIME...MOT...LOC 1941Z 248DEG 23KT 4070 7416 4060 7408 4050 7424 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

Goodman

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 1:13 PM EDT	Special Weather Statement	OKX	Hudson	32 min
Jul 17, 1:55 PM EDT	Special Weather Statement	OKX	Hudson	50 min
Jul 17, 2:01 PM EDT	Severe Thunderstorm Warning	OKX	Bergen, Essex, Hudson, Union	44 min
Jul 17, 2:10 PM EDT	Areal Flood Advisory	OKX	Bergen, Essex, Hudson, Union	95 min
Jul 17, 2:20 PM EDT	Flash Flood Warning	OKX	Bergen, Essex, Hudson, Union	3 hr
Jul 17, 2:42 PM EDT	Severe Thunderstorm Warning	OKX	Bergen, Essex, Hudson, Union	33 min
Jul 17, 2:49 PM EDT	Special Weather Statement	OKX	Union	41 min
Jul 17, 2:50 PM EDT	Special Weather Statement	OKX	Bergen, Passaic	55 min
Jul 17, 3:00 PM EDT	Areal Flood Advisory	OKX	Bergen, Essex, Passaic, Union	113 min
Jul 17, 3:24 PM EDT	Flash Flood Warning	OKX	Union	80 min
Jul 17, 6:40 PM EDT	Special Weather Statement	OKX	Union	50 min
Jul 17, 6:41 PM EDT	Areal Flood Advisory	OKX	Essex, Union	94 min
Jul 17, 7:23 PM EDT	Areal Flood Advisory	OKX	Bergen, Passaic	112 min
Jul 17, 1:48 PM EDT	Special Marine Warning	OKX		22 min
Jul 17, 1:51 PM EDT	Severe Thunderstorm Warning	OKX	Kings, Queens	24 min
Jul 17, 3:10 PM EDT	Tornado Warning	OKX	Richmond	19 min
Jul 17, 3:20 PM EDT	Special Marine Warning	OKX		55 min
Jul 17, 3:25 PM EDT	Special Weather Statement	OKX	Putnam	50 min
Jul 17, 3:54 PM EDT	Severe Thunderstorm Warning	OKX	Richmond	16 min
Jul 17, 3:59 PM EDT	Special Weather Statement	OKX	Rockland	46 min
Jul 17, 4:49 PM EDT	Special Weather Statement	OKX	Orange	26 min
Jul 17, 5:02 PM EDT	Areal Flood Advisory	OKX	Orange	88 min
Jul 17, 6:54 PM EDT	Special Weather Statement	OKX	Orange	51 min
Jul 17, 7:05 PM EDT	Special Weather Statement	OKX	Putnam	40 min
Jul 17, 7:06 PM EDT	Areal Flood Advisory	OKX	Orange	84 min
Jul 17, 7:40 PM EDT	Special Weather Statement	OKX	Rockland	50 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2021 Severe Thunderstorm Warnings in New York, 2021 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.