Alert archive / New York / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 27, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jun 21, 2021, 9:26 PM EDT for Bergen County, Passaic County, New Jersey; 4 counties in New York. It was in force for 49 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
- Jun 21, 2021, 9:26 PM EDT (01:26 UTC)
- Expired
- Jun 21, 2021, 10:15 PM EDT
- In force
- 49 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bergen County, NJ, Passaic County, NJ, Orange County, NY, Putnam County, NY, Rockland County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 122 km from the middle of the area, began a volume at 01:25 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 21, 9:45 PM EDT | TSTM WND DMG | 2 Nw Monroe, NY | MULTIPLE TREES DOWN |
| Jun 21, 9:56 PM EDT | TSTM WND DMG | Peekskill, NY | CONED REPORTS DOWNED POWER LINES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 21, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 1.4 hours before the alert went out and 121 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.
357
WUUS51 KOKX 220126
SVROKX
NJC003-031-NYC071-079-087-119-220215-
/O.NEW.KOKX.SV.W.0027.210622T0126Z-210622T0215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
926 PM EDT Mon Jun 21 2021
The National Weather Service in Upton NY has issued a
* Severe Thunderstorm Warning for...
Western Passaic County in northeastern New Jersey...
Northwestern Bergen County in northeastern New Jersey...
Northern Westchester County in southeastern New York...
Orange County in southeastern New York...
Putnam County in southeastern New York...
Rockland County in southeastern New York...
* Until 1015 PM EDT.
* At 926 PM EDT, severe thunderstorms were located along a broken
line extending from Phillipsport to near Montgomery to near Goshen
to near Monroe to near Ringwood to Bloomingdale, moving east at 35
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Severe thunderstorms will be near...
Monroe and Montgomery around 930 PM EDT.
Walden around 935 PM EDT.
Suffern and West Point around 945 PM EDT.
Newburgh and Monsey around 950 PM EDT.
Peekskill and Nanuet around 955 PM EDT.
New City and Nyack around 1000 PM EDT.
Mahopac and Upper Nyack around 1005 PM EDT.
Ossining and Carmel around 1010 PM EDT.
Mount Kisco and Lake Carmel around 1015 PM EDT.
This includes the following New York State COVID tent site...
Anthony Wayne Rec Center.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Upton NY.
&&
LAT...LON 4160 7425 4158 7413 4161 7413 4158 7405
4159 7395 4153 7400 4146 7400 4144 7398
4149 7393 4152 7363 4130 7363 4108 7385
4098 7428 4100 7430 4103 7442 4102 7443
4127 7436 4150 7448 4157 7442 4163 7426
TIME...MOT...LOC 0126Z 248DEG 32KT 4162 7444 4154 7432 4142 7427 4132
7422 4113 7424 4103 7433
HAIL...<.75IN
WIND...60MPH
$$2 follow-up statements
719
WWUS51 KOKX 220153
SVSOKX
Severe Weather Statement
National Weather Service New York NY
953 PM EDT Mon Jun 21 2021
NJC031-220202-
/O.CAN.KOKX.SV.W.0027.000000T0000Z-210622T0215Z/
Passaic NJ-
953 PM EDT Mon Jun 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN PASSAIC COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4151 7370 4151 7369 4132 7371 4110 7391
4101 7424 4117 7419 4136 7413 4150 7416
4152 7400 4146 7400 4144 7398 4149 7393
TIME...MOT...LOC 0152Z 243DEG 20KT 4148 7404 4140 7400 4121 7402 4110
7411
$$
NJC003-NYC071-079-087-119-220215-
/O.CON.KOKX.SV.W.0027.000000T0000Z-210622T0215Z/
Bergen NJ-Westchester NY-Orange NY-Putnam NY-Rockland NY-
953 PM EDT Mon Jun 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR NORTHWESTERN BERGEN...NORTHERN WESTCHESTER...SOUTHEASTERN
ORANGE...PUTNAM AND ROCKLAND COUNTIES...
At 952 PM EDT, severe thunderstorms were located along a broken line
extending from New Windsor to near Cold Spring to near Pomona to
Suffern, moving northeast at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
These severe storms will be near...
Newburgh and Cold Spring around 1000 PM EDT.
Peekskill around 1010 PM EDT.
Fahnestock State Park around 1020 PM EDT.
Ossining and Yorktown Heights around 1025 PM EDT.
Mahopac around 1040 PM EDT.
This includes the following New York State COVID tent site...
Anthony Wayne Rec Center.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Upton NY.
&&
LAT...LON 4151 7370 4151 7369 4132 7371 4110 7391
4101 7424 4117 7419 4136 7413 4150 7416
4152 7400 4146 7400 4144 7398 4149 7393
TIME...MOT...LOC 0152Z 243DEG 20KT 4148 7404 4140 7400 4121 7402 4110
7411
HAIL...<.75IN
WIND...60MPH
$$568
WWUS51 KOKX 220211
SVSOKX
Severe Weather Statement
National Weather Service New York NY
1011 PM EDT Mon Jun 21 2021
NJC003-NYC071-079-087-119-220221-
/O.EXP.KOKX.SV.W.0027.000000T0000Z-210622T0215Z/
Bergen NJ-Westchester NY-Orange NY-Putnam NY-Rockland NY-
1011 PM EDT Mon Jun 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BERGEN...NORTHERN
WESTCHESTER...SOUTHEASTERN ORANGE...PUTNAM AND ROCKLAND COUNTIES WILL
EXPIRE AT 1015 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
LAT...LON 4151 7370 4151 7369 4132 7371 4110 7391
4101 7424 4117 7419 4136 7413 4150 7416
4152 7400 4146 7400 4144 7398 4149 7393
TIME...MOT...LOC 0211Z 248DEG 30KT 4153 7386 4145 7382 4126 7384 4115
7393
$$The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 9:09 PM EDT | Special Weather Statement | OKX | Essex, Union | 51 min |
| Jun 21, 9:15 PM EDT | Special Weather Statement | OKX | Bergen, Passaic | 45 min |
| Jun 21, 9:44 PM EDT | Tornado Warning | OKX | Bergen | 21 min |
| 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, 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
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.