Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 69, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Sep 1, 2021, 8:15 PM EDT for Bergen County, Essex County, Hudson County, New Jersey. It was in force for 45 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
- Sep 1, 2021, 8:15 PM EDT (00:15 UTC)
- Expired
- Sep 1, 2021, 9:00 PM EDT
- In force
- 45 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bergen County, NJ, Essex County, NJ, Hudson County, NJ
The radar
The Philadelphia radar (KDIX), 95 km from the middle of the area, began a volume at 00:15 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 |
|---|---|---|---|
| Sep 1, 9:10 PM EDT | TSTM WND GST 59 | Teterboro Airport, NJ |
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 |
|---|---|---|---|
| Sep 1, 6:22 PM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.3 hours before the alert went out and 106 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
- 123 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 279 m²/s²
- 0-3 km storm-relative helicity
- 456 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
703
WUUS51 KOKX 020015
SVROKX
NJC003-013-017-020100-
/O.NEW.KOKX.SV.W.0069.210902T0015Z-210902T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
815 PM EDT Wed Sep 1 2021
The National Weather Service in Upton NY has issued a
* Severe Thunderstorm Warning for...
Hudson County in northeastern New Jersey...
Southeastern Bergen County in northeastern New Jersey...
Southeastern Essex County in northeastern New Jersey...
* Until 900 PM EDT.
* At 814 PM EDT, a severe thunderstorm was located over Harrison,
moving northeast at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* This severe thunderstorm will be near...
Jersey City and Kearny around 820 PM EDT.
Hoboken and Lyndhurst around 830 PM EDT.
Rutherford and Secaucus around 835 PM EDT.
Ridgefield and Teterboro around 845 PM EDT.
Hackensack and Fort Lee around 855 PM EDT.
Bergenfield and Paramus around 900 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 100 AM EDT for northeastern
New Jersey...and southeastern New York.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
A Tornado Watch remains in effect until 100 AM EDT for northeastern
New Jersey...and southeastern New York.
&&
LAT...LON 4067 7413 4067 7414 4069 7416 4069 7421
4071 7422 4083 7415 4082 7413 4082 7412
4086 7412 4086 7411 4087 7412 4096 7406
4089 7393 4073 7403 4066 7413
TIME...MOT...LOC 0014Z 215DEG 16KT 4073 7415
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JCThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 8:32 PM EDT | Severe Thunderstorm Warning | OKX | Essex, Hudson, Union | 43 min |
| Sep 1, 9:03 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Hudson | 42 min |
| Sep 1, 9:25 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Hudson | 65 min |
| Sep 1, 11:54 PM EDT | Flash Flood Warning | OKX | Bergen, Essex, Hudson, Passaic, Union | 3 hr |
| Sep 2, 1:06 AM EDT | Areal Flood Warning | OKX | Bergen | 4 hr |
| Sep 2, 2:53 AM EDT | Areal Flood Warning | OKX | Bergen, Essex, Hudson, Passaic, Union | 7 hr |
| Sep 2, 5:01 AM EDT | Areal Flood Warning | OKX | Bergen, Passaic | 3 hr |
| Sep 2, 10:16 AM EDT | Areal Flood Warning | OKX | Bergen, Essex, Hudson, Passaic, Union | 25 hr |
Nearby
Severe 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.