Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 3, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Apr 21, 2021, 2:10 PM EDT for Putnam County, New York; Greater Bridgeport Planning Region, Connecticut. It was in force for 50 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
- Apr 21, 2021, 2:10 PM EDT (18:10 UTC)
- Expired
- Apr 21, 2021, 3:00 PM EDT
- In force
- 50 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, Putnam County, NY
The radar
The Brookhaven radar (KOKX), 92 km from the middle of the area, began a volume at 18:11 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 |
|---|---|---|---|
| Apr 21, 12:28 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.2 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1427 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 206 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
650
WUUS51 KOKX 211810
SVROKX
CTC001-NYC079-211900-
/O.NEW.KOKX.SV.W.0003.210421T1810Z-210421T1900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
210 PM EDT Wed Apr 21 2021
The National Weather Service in Upton NY has issued a
* Severe Thunderstorm Warning for...
North central Fairfield County in southern Connecticut...
Putnam County in southeastern New York...
* Until 300 PM EDT.
* At 209 PM EDT, a severe thunderstorm was located over Cold Spring,
moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* This severe thunderstorm will be near...
Fahnestock State Park around 220 PM EDT.
Lake Carmel and Carmel around 230 PM EDT.
Brewster around 235 PM EDT.
New Fairfield around 240 PM EDT.
Danbury and Brookfield around 250 PM EDT.
Newtown around 255 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4164 7350 4150 7344 4151 7339 4148 7336
4147 7330 4145 7330 4145 7328 4144 7327
4134 7396 4140 7395 4140 7396 4144 7398
4149 7393 4153 7353 4165 7352 4166 7349
TIME...MOT...LOC 1809Z 255DEG 39KT 4144 7399
HAIL...<.75IN
WIND...60MPH
$$1 follow-up statement
219
WWUS51 KOKX 211842
SVSOKX
Severe Weather Statement
National Weather Service New York NY
242 PM EDT Wed Apr 21 2021
CTC001-NYC079-211900-
/O.CON.KOKX.SV.W.0003.000000T0000Z-210421T1900Z/
Fairfield CT-Putnam NY-
242 PM EDT Wed Apr 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR NORTH CENTRAL FAIRFIELD AND EASTERN PUTNAM COUNTIES...
At 242 PM EDT, a severe thunderstorm was located over Carmel, or near
Lake Carmel, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
This severe storm will be near...
Lake Carmel around 245 PM EDT.
Brewster around 250 PM EDT.
New Fairfield around 300 PM EDT.
Brookfield around 310 PM EDT.
Danbury and Bethel around 315 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4136 7379 4150 7381 4150 7379 4153 7353
4156 7353 4157 7347 4150 7344 4151 7339
4142 7338
TIME...MOT...LOC 1842Z 264DEG 25KT 4143 7371
HAIL...<.75IN
WIND...60MPH
$$The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 8:48 PM EDT | Freeze Watch | OKX | Orange, Putnam | 7 hr |
| Apr 21, 3:41 AM EDT | Freeze Warning | OKX | Orange, Putnam, Rockland, Westchester | 29 hr |
| Apr 21, 10:58 AM EDT | Special Weather Statement | OKX | Nassau | 47 min |
| Apr 21, 12:52 PM EDT | Special Weather Statement | OKX | Suffolk | 23 min |
| Apr 21, 1:23 PM EDT | Special Weather Statement | OKX | Orange, Rockland | 67 min |
| Apr 21, 1:41 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Rockland | 64 min |
| Apr 21, 2:05 PM EDT | Special Weather Statement | OKX | Bronx, Kings, Nassau, New York, Putnam, Queens and 2 more | 85 min |
| Apr 21, 2:12 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Nassau, New York, Queens, Westchester | 48 min |
| Apr 21, 2:14 PM EDT | Special Marine Warning | OKX | 61 min | |
| Apr 21, 2:28 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 47 min |
| Apr 21, 2:34 PM EDT | Special Marine Warning | OKX | 86 min | |
| Apr 21, 2:53 PM EDT | Severe Thunderstorm Warning | OKX | Putnam, Westchester | 67 min |
| Apr 21, 3:07 PM EDT | Special Marine Warning | OKX | 113 min | |
| Apr 21, 3:17 PM EDT | Severe Thunderstorm Warning | OKX | Nassau, Suffolk | 19 min |
| Apr 21, 12:59 PM EDT | Special Weather Statement | OKX | 46 min | |
| Apr 21, 4:02 PM EDT | Special Weather Statement | OKX | 58 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.