Alert archive / New York / Tornado Warnings in 2021
Tornado Warning 1, NWS New York, NY
NWS New York, NY issued this tornado warning at Jun 21, 2021, 9:44 PM EDT for Rockland County, Westchester County, New York; Bergen County, New Jersey. It was in force for 21 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 21, 2021, 9:44 PM EDT (01:44 UTC)
- Expired
- Jun 21, 2021, 10:05 PM EDT
- In force
- 21 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Bergen County, NJ, Rockland County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 98 km from the middle of the area, began a volume at 01:46 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 00:00Z, 1.7 hours before the alert went out and 98 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
- 127 J/kg
- Mixed-layer CIN
- -165 J/kg
- Mixed-layer LCL
- 775 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
473
WFUS51 KOKX 220144
TOROKX
NJC003-NYC087-119-220230-
/O.NEW.KOKX.TO.W.0001.210622T0144Z-210622T0230Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New York NY
944 PM EDT Mon Jun 21 2021
The National Weather Service in Upton NY has issued a
* Tornado Warning for...
Northwestern Bergen County in northeastern New Jersey...
Northern Westchester County in southeastern New York...
Rockland County in southeastern New York...
* Until 1030 PM EDT.
* At 944 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Suffern, moving east at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Monsey around 950 PM EDT.
Nanuet and Pomona around 955 PM EDT.
New City and Pearl River around 1000 PM EDT.
Haverstraw and Orangeburg around 1005 PM EDT.
Nyack and Upper Nyack around 1010 PM EDT.
Ossining around 1015 PM EDT.
Tarrytown around 1020 PM EDT.
Hawthorne around 1025 PM EDT.
Mount Kisco and Yorktown Heights around 1030 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4131 7373 4104 7372 4104 7420 4116 7421
4123 7411
TIME...MOT...LOC 0144Z 265DEG 20KT 4114 7411
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$1 follow-up statement
787
WWUS51 KOKX 220205
SVSOKX
Severe Weather Statement
National Weather Service New York NY
1005 PM EDT Mon Jun 21 2021
NJC003-NYC087-119-220214-
/O.CAN.KOKX.TO.W.0001.000000T0000Z-210622T0230Z/
Bergen NJ-Westchester NY-Rockland NY-
1005 PM EDT Mon Jun 21 2021
...THE TORNADO WARNING FOR NORTHWESTERN BERGEN...NORTHERN WESTCHESTER
AND ROCKLAND COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.
LAT...LON 4131 7373 4104 7372 4104 7420 4116 7421
4123 7411
TIME...MOT...LOC 0204Z 265DEG 20KT 4125 7381
$$The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 8:38 PM EDT | Special Weather Statement | OKX | Orange | 37 min |
| Jun 21, 8:47 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 43 min |
| Jun 21, 9:09 PM EDT | Special Weather Statement | OKX | Richmond | 51 min |
| Jun 21, 9:15 PM EDT | Special Weather Statement | OKX | Rockland | 45 min |
| Jun 21, 9:26 PM EDT | Severe Thunderstorm Warning | OKX | Orange, Putnam, Rockland, Westchester | 49 min |
| Jun 21, 10:13 PM EDT | Special Weather Statement | OKX | Putnam, Westchester | 47 min |
| Jun 22, 5:26 AM EDT | Coastal Flood Statement | OKX | Nassau | 16 hr |
| Jun 22, 12:39 PM EDT | Special Weather Statement | OKX | Suffolk | 51 min |
| Jun 22, 2:22 PM EDT | Special Weather Statement | OKX | Suffolk | 53 min |
| Jun 22, 3:39 PM EDT | Small Craft Advisory | OKX | 12 hr |
Nearby
Tornado Warnings in New York, 2021Tornado Warnings in New Jersey, 2021Every tornado warning in 2021Tornadoes 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.