Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 53, NWS New York, NY

July 17, 2021Kings County, Queens County, New York

NWS New York, NY issued this severe thunderstorm warning at Jul 17, 2021, 1:51 PM EDT for Kings County, Queens County, New York. It was in force for 24 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 17, 2021, 1:51 PM EDT (17:51 UTC)
Expired: Jul 17, 2021, 2:15 PM EDT
In force: 24 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kings County, NY, Queens County, NY

The radar

The Philadelphia radar (KDIX), 83 km from the middle of the area, began a volume at 17:51 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 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, 5.9 hours before the alert went out and 92 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.

986 
WUUS51 KOKX 171751
SVROKX
NYC047-081-171815-
/O.NEW.KOKX.SV.W.0053.210717T1751Z-210717T1815Z/

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

The National Weather Service in Upton NY has issued a

* Severe Thunderstorm Warning for...
  Queens County in southeastern New York...
  Kings County in southeastern New York...

* Until 215 PM EDT.

* At 150 PM EDT, a severe thunderstorm was located near Oakwood, or
  near Sandy Hook, moving northeast at 25 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor hail damage to vehicles is possible. Expect wind 
           damage to trees and power lines.

* This severe thunderstorm will be near...
  Coney Island around 205 PM EDT.
  Sheepshead Bay and Bensonhurst around 210 PM EDT.
  Flatbush, Rockaway Beach, Crown Heights, Canarsie and Howard Beach 
  around 215 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 are likely with this storm. 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 4053 7394 4056 7395 4056 7401 4058 7401
      4060 7403 4072 7391 4059 7374 4059 7375
      4058 7373 4057 7375 4053 7393
TIME...MOT...LOC 1750Z 230DEG 21KT 4051 7405 

HAIL...1.00IN
WIND...60MPH
 
$$

Goodman

1 follow-up statement

442 
WWUS51 KOKX 171808
SVSOKX

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

NYC047-081-171817-
/O.EXP.KOKX.SV.W.0053.000000T0000Z-210717T1815Z/
Queens NY-Kings NY-
208 PM EDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR QUEENS AND KINGS COUNTIES WILL
EXPIRE AT 215 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty 
winds up to 40 mph and heavy rain are still possible with this 
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
southeastern New York.

LAT...LON 4053 7394 4056 7395 4056 7401 4058 7401
      4060 7403 4072 7391 4059 7374 4059 7375
      4058 7373 4057 7375 4053 7393
TIME...MOT...LOC 1807Z 224DEG 19KT 4055 7399 

$$

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	New York	32 min
Jul 17, 1:48 PM EDT	Special Marine Warning	OKX		22 min
Jul 17, 2:01 PM EDT	Severe Thunderstorm Warning	OKX	New York	44 min
Jul 17, 2:42 PM EDT	Severe Thunderstorm Warning	OKX	New York	33 min
Jul 17, 2:49 PM EDT	Special Weather Statement	OKX	Richmond	41 min
Jul 17, 3:10 PM EDT	Tornado Warning	OKX	Richmond	19 min
Jul 17, 3:18 PM EDT	Severe Thunderstorm Warning	OKX	Kings, New York, Richmond	42 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 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.