Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 68, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Sep 1, 2021, 7:29 PM EDT for Union County, New Jersey. It was in force for 46 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
- Sep 1, 2021, 7:29 PM EDT (23:29 UTC)
- Expired
- Sep 1, 2021, 8:15 PM EDT
- In force
- 46 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Union County, NJ
The radar
The Philadelphia radar (KDIX), 78 km from the middle of the area, began a volume at 23:29 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 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 12:00Z, 11.5 hours before the alert went out and 128 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
- 51 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1274 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
745
WUUS51 KOKX 012329
SVROKX
NJC039-020015-
/O.NEW.KOKX.SV.W.0068.210901T2329Z-210902T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
729 PM EDT Wed Sep 1 2021
The National Weather Service in Upton NY has issued a
* Severe Thunderstorm Warning for...
Union County in northeastern New Jersey...
* Until 815 PM EDT.
* At 727 PM EDT, a severe thunderstorm was located over Manville, or
over Somerville, moving northeast at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* This severe thunderstorm will be near...
Plainfield around 750 PM EDT.
Clark around 800 PM EDT.
Linden and Summit around 805 PM EDT.
Union around 810 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 100 AM EDT for northeastern
New Jersey...and southeastern New York.
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 4061 7431 4060 7446 4062 7442 4066 7440
4067 7440 4066 7442 4066 7444 4065 7445
4067 7446 4073 7435 4071 7431 4072 7429
4064 7419 4060 7421 4060 7426 4059 7429
TIME...MOT...LOC 2327Z 234DEG 23KT 4055 7458
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JC1 follow-up statement
037
WWUS51 KOKX 012352
SVSOKX
Severe Weather Statement
National Weather Service New York NY
752 PM EDT Wed Sep 1 2021
NJC039-020015-
/O.CON.KOKX.SV.W.0068.000000T0000Z-210902T0015Z/
Union NJ-
752 PM EDT Wed Sep 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR UNION COUNTY...
At 752 PM EDT, a severe thunderstorm was located over Plainfield, and
is moving northeast at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
This severe storm will be near...
Clark around 800 PM EDT.
Linden and Summit around 805 PM EDT.
Union around 810 PM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 100 AM EDT for northeastern
New Jersey...and southeastern New York.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4061 7431 4060 7446 4062 7442 4066 7440
4067 7440 4066 7442 4066 7444 4065 7445
4067 7446 4073 7435 4071 7431 4072 7429
4064 7419 4060 7421 4060 7426 4059 7429
TIME...MOT...LOC 2352Z 234DEG 23KT 4064 7441
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JCThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 4:41 PM EDT | River Flood Warning | OKX | Bergen | 29 hr |
| Sep 1, 4:43 PM EDT | River Flood Warning | OKX | Bergen, Passaic | 43 hr |
| Sep 1, 5:54 PM EDT | Flash Flood Warning | OKX | Bergen, Essex, Hudson, Passaic, Union | 6 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.