Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 38, NWS New York, NY

July 6, 20218 counties in New York; Greater Bridgeport Planning Region, Connecticut; Bergen County, Hudson County, Union County, New Jersey

NWS New York, NY issued this severe thunderstorm warning at Jul 6, 2021, 6:28 PM EDT for 8 counties in New York; Greater Bridgeport Planning Region, Connecticut; Bergen County, Hudson County, Union County, New Jersey. It was in force for 47 min. 12 reports 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 6, 2021, 6:28 PM EDT (22:28 UTC)
Expired: Jul 6, 2021, 7:15 PM EDT
In force: 47 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Greater Bridgeport Planning Region, CT, Bergen County, NJ, Hudson County, NJ, Union County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Queens County, NY, Richmond County, NY, Suffolk County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 75 km from the middle of the area, began a volume at 22:29 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 6, 6:30 PM EDT	TSTM WND GST 58	Midtown Manhattan, NY	58 MPH AT THE MIDTOWN MANHATTAN NEW YORK STATE MESONET.
Jul 6, 6:31 PM EDT	TSTM WND DMG	1 S Bayside, NY	TREE DOWN BLOCKING ROAD ON 32ND AVENUE NORTH OF BELL BOULEVARD.
Jul 6, 6:31 PM EDT	TSTM WND DMG	1 S Bayside, NY	TREE DOWN ON 213TH STREET NORTH OF 32ND AVE.
Jul 6, 6:35 PM EDT	TSTM WND GST 61	2 Nw Jamaica, NY	61 MPH AT KEW GARDEN HILLS NEW YORK STATE MESONET.
Jul 6, 6:37 PM EDT	MARINE TSTM WIND 44	1 Ene Bayonne, NJ	MESONET STATION XBYO BAYONNE.
Jul 6, 6:40 PM EDT	TSTM WND DMG	1 N Ozone Park, NY	TREE DOWN ON THE JACKIE ROBINSON PARKWAY NEAT EXIT 4. ROAD IS CLOSED AND FIRE DEPARTMENT IS ON SCENE.
Jul 6, 6:41 PM EDT	MARINE TSTM WIND 67	2 N Glen Cove, NY	MESONET STATION XBAY BAYVILLE.
Jul 6, 6:42 PM EDT	MARINE TSTM WIND 54	2 Nne Bayside, NY	54 MPH AT KINGS POINT.
Jul 6, 6:45 PM EDT	TSTM WND DMG	1 Wsw Ozone Park, NY	TREE DOWN ON 95TH AVE.
Jul 6, 6:45 PM EDT	MARINE TSTM WIND 39	3 Se Coney Island, NY	MESONET STATION XBRZ BREEZY POINT.
Jul 6, 6:55 PM EDT	TSTM WND DMG	1 Ssw Uniondale, NY	TREE DOWN ON SOUTHERN STATE PARKWAY WESTBOUND BETWEEN EXIT 21 - NASSAU ROAD AND EXIT 20 N - BALDWIN ROAD. RIGHT LANE AND SHOULDER BLOCKED.
Jul 6, 7:05 PM EDT	MARINE TSTM WIND 43	1 Se Amityville, NY	MESONET STATION XHCK GREAT SOUTH BAY.

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 6, 1:32 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.5 hours before the alert went out and 75 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: 230 J/kg
Mixed-layer CIN: -195 J/kg
Mixed-layer LCL: 1202 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

419 
WUUS51 KOKX 062228
SVROKX
CTC001-NJC003-017-039-NYC005-047-059-061-081-085-103-119-062315-
/O.NEW.KOKX.SV.W.0038.210706T2228Z-210706T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
628 PM EDT Tue Jul 6 2021

The National Weather Service in Upton NY has issued a

* Severe Thunderstorm Warning for...
  Southern Fairfield County in southern Connecticut...
  Hudson County in northeastern New Jersey...
  Southeastern Union County in northeastern New Jersey...
  Southeastern Bergen County in northeastern New Jersey...
  Southern Westchester County in southeastern New York...
  Queens County in southeastern New York...
  Richmond County in southeastern New York...
  Bronx County in southeastern New York...
  Western Suffolk County in southeastern New York...
  Kings County in southeastern New York...
  New York (Manhattan) County in southeastern New York...
  Nassau County in southeastern New York...

* Until 715 PM EDT.

* At 626 PM EDT, severe thunderstorms were located along a line
  extending from near Dobbs Ferry to Flushing to Huguenot, moving
  southeast at 60 mph.

  HAZARD...70 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Jamaica and New Rochelle around 630 PM EDT.
  Valley Stream and Port Chester around 635 PM EDT.
  Long Beach and Glen Cove around 640 PM EDT.
  Levittown and Freeport around 645 PM EDT.
  Plainview and Massapequa around 650 PM EDT.
  Huntington Station and Lindenhurst around 655 PM EDT.
  Brentwood and Commack around 700 PM EDT.
  Islip and Hauppauge around 705 PM EDT.
  Centereach and Ronkonkoma around 710 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

These storms have a history of producing wind damage across 
northeast New Jersey. SEEK SHELTER NOW inside a sturdy structure and 
stay away from windows! 
&&

LAT...LON 4049 7428 4050 7426 4059 7421 4061 7435
      4069 7421 4068 7413 4074 7413 4082 7401
      4114 7381 4104 7341 4097 7365 4086 7375
      4096 7349 4094 7303 4071 7306 4067 7326
      4068 7307 4066 7307 4061 7325
TIME...MOT...LOC 2226Z 293DEG 50KT 4101 7383 4076 7385 4055 7418 

HAIL...<.75IN
WIND...60MPH
 
$$

NV

1 follow-up statement

430 
WWUS51 KOKX 062312
SVSOKX

Severe Weather Statement
National Weather Service New York NY
712 PM EDT Tue Jul 6 2021

CTC001-NJC003-017-039-NYC005-047-059-061-081-085-103-119-062321-
/O.EXP.KOKX.SV.W.0038.000000T0000Z-210706T2315Z/
Fairfield CT-Hudson NJ-Union NJ-Bergen NJ-Westchester NY-Queens NY-
Richmond NY-Bronx NY-Suffolk NY-Kings NY-New York (Manhattan) NY-
Nassau NY-
712 PM EDT Tue Jul 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN FAIRFIELD...HUDSON...
SOUTHEASTERN UNION...SOUTHEASTERN BERGEN...SOUTHERN WESTCHESTER...
QUEENS...RICHMOND...BRONX...WESTERN SUFFOLK...KINGS...NEW YORK
(MANHATTAN) AND NASSAU COUNTIES WILL EXPIRE AT 715 PM EDT...
    
The storms which prompted the warning are exiting the warned area. 
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southern Connecticut...northeastern New Jersey...and southeastern New
York.

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

LAT...LON 4049 7428 4050 7426 4059 7421 4061 7435
      4069 7421 4068 7413 4074 7413 4082 7401
      4114 7381 4104 7341 4097 7365 4086 7375
      4096 7349 4094 7303 4071 7306 4067 7326
      4068 7307 4066 7307 4061 7325
TIME...MOT...LOC 2311Z 293DEG 50KT 4077 7310 4052 7312 4031 7346 

$$

NV

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 4:10 PM EDT	Special Weather Statement	OKX	Dutchess	50 min
Jul 6, 4:43 PM EDT	Special Weather Statement	OKX	Orange	47 min
Jul 6, 5:08 PM EDT	Severe Thunderstorm Warning	OKX	Putnam	32 min
Jul 6, 5:15 PM EDT	Special Weather Statement	OKX	Orange	45 min
Jul 6, 5:49 PM EDT	Severe Thunderstorm Warning	OKX	Westchester	56 min
Jul 6, 5:53 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Kings, New York, Orange, Queens, Richmond and 2 more	37 min
Jul 6, 5:56 PM EDT	Special Marine Warning	OKX		94 min
Jul 6, 5:58 PM EDT	Special Marine Warning	OKX		92 min
Jul 6, 6:24 PM EDT	Special Marine Warning	OKX		2 hr
Jul 6, 6:37 PM EDT	Special Weather Statement	OKX	Suffolk	38 min
Jul 6, 6:58 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	47 min
Jul 6, 7:07 PM EDT	Special Marine Warning	OKX		98 min
Jul 6, 7:36 PM EDT	Areal Flood Advisory	OKX	Suffolk	114 min
Jul 6, 4:54 PM EDT	Special Weather Statement	OKX		51 min
Jul 6, 5:35 PM EDT	Severe Thunderstorm Warning	OKX	Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region	40 min
Jul 6, 6:32 PM EDT	Severe Thunderstorm Warning	OKX	Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	27 min
Jul 6, 6:48 PM EDT	Areal Flood Advisory	OKX	Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	3 hr

Nearby

Severe Thunderstorm Warnings in New York, 2021 Severe Thunderstorm Warnings in New Jersey, 2021 Severe Thunderstorm Warnings in Connecticut, 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.