Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 41, NWS New York, NY

July 6, 2021Kings County, Richmond County, New York; Union County, New Jersey

NWS New York, NY issued this severe thunderstorm warning at Jul 6, 2021, 9:00 PM EDT for Kings County, Richmond County, New York; Union County, New Jersey. It was in force for 60 min. 2 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, 9:00 PM EDT (01:00 UTC)
Expired
Jul 6, 2021, 10:00 PM EDT
In force
60 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Union County, NJ, Kings County, NY, Richmond County, NY

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 01:01 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

TimeReportWhereRemark
Jul 6, 9:45 PM EDTTSTM WND DMGWestfield, NJTREES AND WIRES DOWN IN WESTFIELD.
Jul 6, 10:10 PM EDTTSTM WND DMGRoselle Park, NJTREES AND WIRES REPORTED DOWN IN ROSELLE.

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.

IssuedProductOfficeLasted
Jul 6, 1:32 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 1.0 hours before the alert went out and 119 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-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2021-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1647 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2021-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1647 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
876 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.3

Open this sounding in Storm Lab

The text

As transmitted.

295 
WUUS51 KOKX 070100
SVROKX
NJC039-NYC047-085-070200-
/O.NEW.KOKX.SV.W.0041.210707T0100Z-210707T0200Z/

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

The National Weather Service in Upton NY has issued a

* Severe Thunderstorm Warning for...
  Union County in northeastern New Jersey...
  Richmond County in southeastern New York...
  Kings County in southeastern New York...

* Until 1000 PM EDT.

* At 900 PM EDT, severe thunderstorms were located along a line
  extending from Union to near East Brunswick, moving southeast 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.

* Severe thunderstorms will be near...
  Elizabeth and Linden around 915 PM EDT.
  Port Richmond around 925 PM EDT.
  Todt Hill and Huguenot around 930 PM EDT.
  Tompkinsville and Oakwood around 935 PM EDT.
  The Verrazano Narrows Bridge and Bay Ridge around 940 PM EDT.
  Coney Island around 945 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4050 7426 4051 7426 4055 7425 4056 7421
      4060 7421 4061 7431 4059 7446 4067 7440
      4065 7445 4067 7446 4074 7437 4067 7414
      4064 7416 4065 7409 4057 7390 4056 7401
      4060 7404 4053 7410 4050 7423
TIME...MOT...LOC 0100Z 298DEG 21KT 4070 7431 4043 7437 

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

NV

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 8:28 PM EDTSpecial Marine WarningOKX47 min
Jul 6, 9:02 PM EDTSpecial Marine WarningOKX43 min
Jul 6, 9:06 PM EDTAreal Flood AdvisoryOKXKings, Richmond114 min
Jul 6, 9:11 PM EDTSpecial Weather StatementOKXNew York, Queens49 min
Jul 6, 9:58 PM EDTSpecial Marine WarningOKX32 min
Jul 6, 10:02 PM EDTSevere Thunderstorm WarningOKXKings, Richmond43 min
Jul 7, 4:28 PM EDTFlash Flood WatchOKXBronx, Kings, Nassau, New York, Orange, Putnam and 5 more44 hr
Jul 7, 5:43 PM EDTTropical Storm WatchOKXNassau, Suffolk12 hr
Jul 7, 7:14 PM EDTSpecial Marine WarningOKX61 min
Jul 6, 8:07 PM EDTSpecial Weather StatementOKXUnion38 min

Nearby

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