Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 67, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Aug 12, 2021, 5:04 PM EDT for 4 counties in New York. It was in force for 22 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
- Aug 12, 2021, 5:04 PM EDT (21:04 UTC)
- Expired
- Aug 12, 2021, 5:26 PM EDT
- In force
- 22 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Orange County, NY, Putnam County, NY, Rockland County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 91 km from the middle of the area, began a volume at 21:06 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 |
|---|---|---|---|
| Aug 12, 5:14 PM EDT | TSTM WND DMG | 1 Nnw Buckberg, NY | TREES DOWN ACROSS ROAD IN BEAR MOUNTAIN STATE PARK. |
| Aug 12, 5:14 PM EDT | TSTM WND DMG | 3 Ssw Fort Montgomery, NY | TREES DOWN ACROSS ROAD IN BEAR MOUNTAIN STATE PARK. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.1 hours before the alert went out and 91 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
- 278 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 1400 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -82 m²/s²
- 0-3 km storm-relative helicity
- -47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
066
WUUS51 KOKX 122104
SVROKX
NYC071-079-087-119-122145-
/O.NEW.KOKX.SV.W.0067.210812T2104Z-210812T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
504 PM EDT Thu Aug 12 2021
The National Weather Service in Upton NY has issued a
* Severe Thunderstorm Warning for...
Northern Westchester County in southeastern New York...
Southeastern Orange County in southeastern New York...
Western Putnam County in southeastern New York...
Rockland County in southeastern New York...
* Until 545 PM EDT.
* At 504 PM EDT, a severe thunderstorm was located near Peekskill,
moving east at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* This severe thunderstorm will be near...
Peekskill and Haverstraw around 515 PM EDT.
Ossining around 525 PM EDT.
Yorktown Heights around 535 PM EDT.
Mount Kisco around 540 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4135 7355 4134 7355 4112 7377 4121 7420
4137 7411
TIME...MOT...LOC 2104Z 279DEG 23KT 4128 7403
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$1 follow-up statement
220
WWUS51 KOKX 122126
SVSOKX
Severe Weather Statement
National Weather Service New York NY
526 PM EDT Thu Aug 12 2021
NYC071-079-087-119-122136-
/O.CAN.KOKX.SV.W.0067.000000T0000Z-210812T2145Z/
Westchester NY-Orange NY-Putnam NY-Rockland NY-
526 PM EDT Thu Aug 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WESTCHESTER...
SOUTHEASTERN ORANGE...WESTERN PUTNAM AND ROCKLAND COUNTIES IS
CANCELLED...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.
LAT...LON 4135 7355 4134 7355 4112 7377 4121 7420
4137 7411
TIME...MOT...LOC 2125Z 279DEG 23KT 4126 7384
$$The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 8:32 PM EDT | Special Weather Statement | OKX | Westchester | 28 min |
| Aug 11, 8:39 PM EDT | Areal Flood Advisory | OKX | Kings, New York, Queens, Richmond | 2 hr |
| Aug 11, 9:00 PM EDT | Special Marine Warning | OKX | 30 min | |
| Aug 11, 9:01 PM EDT | Special Weather Statement | OKX | Kings, New York, Richmond | 29 min |
| Aug 11, 9:25 PM EDT | Special Weather Statement | OKX | Kings, Queens | 35 min |
| Aug 11, 9:27 PM EDT | Special Marine Warning | OKX | 33 min | |
| Aug 12, 4:07 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Rockland | 41 min |
| Aug 12, 4:21 PM EDT | Special Weather Statement | OKX | Dutchess | 24 min |
| Aug 12, 4:39 PM EDT | Special Weather Statement | OKX | Bronx, New York | 51 min |
| Aug 12, 4:45 PM EDT | Special Marine Warning | OKX | 90 min | |
| Aug 12, 4:53 PM EDT | Special Weather Statement | OKX | Rockland | 52 min |
| Aug 12, 5:20 PM EDT | Special Weather Statement | OKX | Nassau | 40 min |
| Aug 12, 5:53 PM EDT | Special Weather Statement | OKX | Suffolk | 52 min |
Nearby
Severe Thunderstorm Warnings in New York, 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.