Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 18, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jun 8, 2021, 2:07 PM EDT for Putnam County, Westchester County, New York. It was in force for 38 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
- Jun 8, 2021, 2:07 PM EDT (18:07 UTC)
- Expired
- Jun 8, 2021, 2:45 PM EDT
- In force
- 38 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Putnam County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 101 km from the middle of the area, began a volume at 18:07 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 nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.1 hours before the alert went out and 101 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
- 740 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
317
WUUS51 KOKX 081807
SVROKX
NYC079-119-081845-
/O.NEW.KOKX.SV.W.0018.210608T1807Z-210608T1845Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
207 PM EDT Tue Jun 8 2021
The National Weather Service in Upton NY has issued a
* Severe Thunderstorm Warning for...
Northern Westchester County in southeastern New York...
Putnam County in southeastern New York...
* Until 245 PM EDT.
* At 207 PM EDT, a severe thunderstorm was located near Peekskill,
moving northeast at 20 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.
* Locations impacted include...
Peekskill, Mahopac, Lake Carmel, Brewster, Carmel, Fahnestock State
Park, Jefferson Valley and Putnam Valley.
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 is occurring 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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4136 7358 4124 7393 4128 7395 4129 7394
4130 7395 4134 7397 4135 7396 4137 7396
4140 7395 4140 7396 4141 7396 4151 7368
TIME...MOT...LOC 1807Z 241DEG 15KT 4136 7386
HAIL...1.00IN
WIND...60MPH
$$
JC1 follow-up statement
995
WWUS51 KOKX 081843
SVSOKX
Severe Weather Statement
National Weather Service New York NY
243 PM EDT Tue Jun 8 2021
NYC079-119-081853-
/O.EXP.KOKX.SV.W.0018.000000T0000Z-210608T1845Z/
Westchester NY-Putnam NY-
243 PM EDT Tue Jun 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WESTCHESTER AND
PUTNAM COUNTIES WILL EXPIRE AT 245 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 4136 7358 4124 7393 4128 7395 4129 7394
4130 7395 4134 7397 4135 7396 4137 7396
4140 7395 4140 7396 4141 7396 4151 7368
TIME...MOT...LOC 1843Z 241DEG 15KT 4143 7369
$$
JCThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 12:04 AM EDT | Marine Dense Fog Advisory | OKX | 9 hr | |
| Jun 8, 12:24 PM EDT | Areal Flood Advisory | OKX | Orange | 3 hr |
| Jun 8, 12:49 PM EDT | Special Weather Statement | OKX | Orange | 41 min |
| Jun 8, 1:07 PM EDT | Flash Flood Warning | OKX | Orange | 3 hr |
| Jun 8, 1:28 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 62 min |
| Jun 8, 2:02 PM EDT | Areal Flood Advisory | OKX | Orange | 118 min |
| Jun 8, 2:26 PM EDT | Special Weather Statement | OKX | Putnam, Rockland, Westchester | 49 min |
| Jun 8, 2:40 PM EDT | Severe Thunderstorm Warning | OKX | Rockland, Westchester | 35 min |
| Jun 8, 3:06 PM EDT | Areal Flood Advisory | OKX | Rockland, Westchester | 114 min |
| Jun 8, 3:10 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Rockland, Westchester | 50 min |
| Jun 8, 3:28 PM EDT | Special Marine Warning | OKX | 62 min | |
| Jun 8, 3:29 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, New York, Queens, Richmond | 46 min |
| Jun 8, 3:30 PM EDT | Flash Flood Warning | OKX | Rockland, Westchester | 3 hr |
| Jun 8, 3:49 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Richmond | 2 hr |
| Jun 8, 4:10 PM EDT | Special Marine Warning | OKX | 43 min | |
| Jun 8, 4:15 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Richmond | 43 min |
| Jun 8, 4:30 PM EDT | Special Marine Warning | OKX | 45 min | |
| Jun 8, 4:31 PM EDT | Flash Flood Warning | OKX | Nassau, Queens | 56 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.