Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 19, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jun 8, 2021, 2:40 PM EDT for Bergen County, New Jersey; Rockland County, Westchester County, New York. It was in force for 35 min. 1 report 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
- Jun 8, 2021, 2:40 PM EDT (18:40 UTC)
- Expired
- Jun 8, 2021, 3:15 PM EDT
- In force
- 35 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bergen County, NJ, Rockland County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 87 km from the middle of the area, began a volume at 18:44 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 |
|---|---|---|---|
| Jun 8, 3:09 PM EDT | TSTM WND DMG | Tappan, NY | LARGE BRANCHES REPORTED DOWN. |
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, 6.7 hours before the alert went out and 87 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.
387
WUUS51 KOKX 081840
SVROKX
NJC003-NYC087-119-081915-
/O.NEW.KOKX.SV.W.0019.210608T1840Z-210608T1915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
240 PM EDT Tue Jun 8 2021
The National Weather Service in Upton NY has issued a
* Severe Thunderstorm Warning for...
Northeastern Bergen County in northeastern New Jersey...
Northern Westchester County in southeastern New York...
Rockland County in southeastern New York...
* Until 315 PM EDT.
* At 236 PM EDT, an area of severe thunderstorms was located in the
area, moving northeast at 15 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Ossining, Haverstraw, Tarrytown, Dobbs Ferry, Nyack, Tappan, Pearl
River, Norwood, Hawthorne, Orangeburg, Upper Nyack, Yorktown
Heights, Westwood, Hillsdale and River Vale.
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 4102 7385 4100 7390 4097 7406 4123 7396
4131 7372 4119 7376 4110 7378 4108 7380
TIME...MOT...LOC 1836Z 233DEG 10KT 4121 7389
HAIL...0.75IN
WIND...60MPH
$$
JCThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 2:02 PM EDT | Areal Flood Advisory | OKX | Passaic | 118 min |
| Jun 8, 2:26 PM EDT | Special Weather Statement | OKX | Bergen, Passaic | 49 min |
| Jun 8, 2:58 PM EDT | Severe Thunderstorm Warning | OKX | Bergen | 47 min |
| Jun 8, 3:06 PM EDT | Areal Flood Advisory | OKX | Bergen | 114 min |
| Jun 8, 3:10 PM EDT | Severe Thunderstorm Warning | OKX | Bergen | 50 min |
| Jun 8, 3:14 PM EDT | Special Weather Statement | OKX | Essex, Union | 46 min |
| Jun 8, 3:15 PM EDT | Flash Flood Warning | OKX | Bergen, Essex, Hudson, Passaic, Union | 3 hr |
| Jun 8, 3:29 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Essex, Hudson, Union | 46 min |
| Jun 8, 3:30 PM EDT | Flash Flood Warning | OKX | Bergen | 3 hr |
| Jun 8, 3:49 PM EDT | Flash Flood Warning | OKX | Hudson | 2 hr |
| Jun 8, 4:15 PM EDT | Severe Thunderstorm Warning | OKX | Hudson | 43 min |
| 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, 2:07 PM EDT | Severe Thunderstorm Warning | OKX | Putnam, Westchester | 38 min |
| Jun 8, 3:28 PM EDT | Special Marine Warning | OKX | 62 min | |
| Jun 8, 4:10 PM EDT | Special Marine Warning | OKX | 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, 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.