Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 36, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jul 6, 2021, 5:49 PM EDT for Westchester County, New York; Greater Bridgeport Planning Region, Connecticut. It was in force for 56 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, 5:49 PM EDT (21:49 UTC)
- Expired
- Jul 6, 2021, 6:45 PM EDT
- In force
- 56 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Greater Bridgeport Planning Region, CT, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 68 km from the middle of the area, began a volume at 21:53 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, 5:55 PM EDT | TSTM WND DMG | Yorktown Heights, NY | POLICE REPORT TREES AND WIRES DOWN ALL OVER TOWN. |
| Jul 6, 6:12 PM EDT | TSTM WND DMG | 3 Ene Yorktown Heights, NY | DOWNED TREE ON NY 35 WESTBOUND AT COBBLING ROCK DRIVE. |
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, 9.8 hours before the alert went out and 68 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.
- 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
The text
As transmitted.
286
WUUS51 KOKX 062149
SVROKX
CTC001-NYC119-062245-
/O.NEW.KOKX.SV.W.0036.210706T2149Z-210706T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
549 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...
Northern Westchester County in southeastern New York...
* Until 645 PM EDT.
* At 549 PM EDT, a severe thunderstorm was located over Yorktown
Heights, or near Mount Kisco, moving east at 40 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...
Bedford around 600 PM EDT.
Greenwich around 605 PM EDT.
Stamford around 610 PM EDT.
New Canaan and Darien around 615 PM EDT.
Norwalk and Weston around 620 PM EDT.
Westport around 625 PM EDT.
Bridgeport and Fairfield around 630 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
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 4126 7320 4111 7325 4112 7330 4105 7338
4104 7341 4116 7391 4119 7392 4133 7387
4134 7382 4135 7374
TIME...MOT...LOC 2149Z 286DEG 34KT 4125 7378
HAIL...1.00IN
WIND...60MPH
$$
DS3 follow-up statements
685
WWUS51 KOKX 062211
SVSOKX
Severe Weather Statement
National Weather Service New York NY
611 PM EDT Tue Jul 6 2021
CTC001-NYC119-062245-
/O.CON.KOKX.SV.W.0036.000000T0000Z-210706T2245Z/
Fairfield CT-Westchester NY-
611 PM EDT Tue Jul 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHERN FAIRFIELD AND NORTHERN WESTCHESTER COUNTIES...
At 611 PM EDT, a severe thunderstorm was located near New Canaan,
moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and power lines.
This severe storm will be near...
Norwalk and Darien around 615 PM EDT.
Weston around 620 PM EDT.
Westport around 625 PM EDT.
Bridgeport and Fairfield around 630 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Upton NY.
&&
LAT...LON 4126 7320 4111 7325 4112 7330 4109 7334
4105 7338 4104 7341 4116 7391 4127 7380
4132 7369
TIME...MOT...LOC 2211Z 286DEG 34KT 4119 7351
HAIL...1.00IN
WIND...60MPH
$$
DS407
WWUS51 KOKX 062222
SVSOKX
Severe Weather Statement
National Weather Service New York NY
622 PM EDT Tue Jul 6 2021
NYC119-062231-
/O.CAN.KOKX.SV.W.0036.000000T0000Z-210706T2245Z/
Westchester NY-
622 PM EDT Tue Jul 6 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WESTCHESTER COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southern Connecticut...and southeastern New York.
LAT...LON 4126 7320 4111 7325 4112 7330 4109 7334
4105 7338 4104 7341 4111 7370 4119 7352
4121 7348 4122 7349 4129 7341
TIME...MOT...LOC 2221Z 286DEG 34KT 4116 7338
$$
CTC001-062245-
/O.CON.KOKX.SV.W.0036.000000T0000Z-210706T2245Z/
Fairfield CT-
622 PM EDT Tue Jul 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHERN FAIRFIELD COUNTY...
At 621 PM EDT, a severe thunderstorm was located over Wilton, or near
Norwalk, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and power lines.
This severe storm will be near...
Westport around 625 PM EDT.
Bridgeport and Fairfield around 630 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Upton NY.
&&
LAT...LON 4126 7320 4111 7325 4112 7330 4109 7334
4105 7338 4104 7341 4111 7370 4119 7352
4121 7348 4122 7349 4129 7341
TIME...MOT...LOC 2221Z 286DEG 34KT 4116 7338
HAIL...1.00IN
WIND...60MPH
$$
DS211
WWUS51 KOKX 062237
SVSOKX
Severe Weather Statement
National Weather Service New York NY
637 PM EDT Tue Jul 6 2021
CTC001-062247-
/O.EXP.KOKX.SV.W.0036.000000T0000Z-210706T2245Z/
Fairfield CT-
637 PM EDT Tue Jul 6 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN FAIRFIELD COUNTY WILL
EXPIRE AT 645 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
southern Connecticut...and southeastern New York.
LAT...LON 4126 7320 4111 7325 4112 7330 4109 7334
4105 7338 4104 7341 4111 7370 4119 7352
4121 7348 4122 7349 4129 7341
TIME...MOT...LOC 2237Z 286DEG 34KT 4112 7321
$$
DSThe 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, 5:53 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, 6:28 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Richmond and 2 more | 47 min |
| 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, 2021Severe Thunderstorm Warnings in Connecticut, 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.