Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 70, NWS New York, NY

September 1, 2021Essex County, Hudson County, Union County, New Jersey; New York County, Richmond County, New York

NWS New York, NY issued this severe thunderstorm warning at Sep 1, 2021, 8:32 PM EDT for Essex County, Hudson County, Union County, New Jersey; New York County, Richmond County, New York. It was in force for 43 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, 8:32 PM EDT (00:32 UTC)
Expired
Sep 1, 2021, 9:15 PM EDT
In force
43 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Essex County, NJ, Hudson County, NJ, Union County, NJ, New York County, NY, Richmond County, NY

The radar

The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 00:34 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.

IssuedProductOfficeLasted
Sep 1, 6:22 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.5 hours before the alert went out and 109 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.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2021-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 123 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2021-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 279 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted.

161 
WUUS51 KOKX 020032
SVROKX
NJC013-017-039-NYC061-085-020115-
/O.NEW.KOKX.SV.W.0070.210902T0032Z-210902T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
832 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 Union County in northeastern New Jersey...
  Southeastern Essex County in northeastern New Jersey...
  Richmond County in southeastern New York...
  New York (Manhattan) County in southeastern New York...

* Until 915 PM EDT.

* At 832 PM EDT, a severe thunderstorm was located over Carteret, or
  over Linden, moving northeast at 15 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* This severe thunderstorm will be near...
  Todt Hill around 845 PM EDT.
  Elizabeth and Port Richmond around 850 PM EDT.
  Bayonne and Tompkinsville around 855 PM EDT.
  Newark around 900 PM EDT.
  Harrison around 905 PM EDT.
  Jersey City and Kearny around 910 PM EDT.
  Hoboken and Secaucus around 915 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 4055 7424 4056 7421 4059 7421 4060 7422
      4059 7428 4060 7430 4081 7414 4079 7415
      4077 7413 4078 7410 4076 7409 4079 7408
      4072 7397 4071 7397 4070 7400 4068 7401
      4067 7405 4064 7404 4053 7418
TIME...MOT...LOC 0032Z 215DEG 15KT 4060 7422 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

JC

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 1, 8:15 PM EDTSevere Thunderstorm WarningOKXBergen, Essex, Hudson45 min
Sep 1, 9:03 PM EDTSevere Thunderstorm WarningOKXBergen, Hudson42 min
Sep 1, 9:25 PM EDTSevere Thunderstorm WarningOKXBergen, Hudson65 min
Sep 1, 11:54 PM EDTFlash Flood Warning EmergencyCatastrophic damage threatOKXBergen, Essex, Hudson, Passaic, Union3 hr
Sep 2, 1:06 AM EDTAreal Flood WarningOKXBergen4 hr
Sep 2, 2:53 AM EDTAreal Flood WarningOKXBergen, Essex, Hudson, Passaic, Union7 hr
Sep 2, 5:01 AM EDTAreal Flood WarningOKXBergen, Passaic3 hr
Sep 2, 10:16 AM EDTAreal Flood WarningOKXBergen, Essex, Hudson, Passaic, Union25 hr
Sep 1, 9:06 PM EDTTornado WarningOKXBronx, New York, Westchester24 min
Sep 1, 9:15 PM EDTSpecial Marine WarningOKX60 min
Sep 1, 9:25 PM EDTSpecial Marine WarningOKX65 min
Sep 1, 9:28 PM EDTFlash Flood Warning EmergencyCatastrophic damage threatOKXBronx, Kings, New York, Queens, Westchester2 hr
Sep 1, 9:34 PM EDTSpecial Marine WarningOKX12 min
Sep 1, 9:56 PM EDTSpecial Marine WarningOKX34 min
Sep 1, 9:57 PM EDTSevere Thunderstorm WarningOKXKings, Nassau, Queens48 min
Sep 1, 10:08 PM EDTFlash Flood Warning EmergencyCatastrophic damage threatOKXNassau, Westchester4 hr
Sep 1, 10:09 PM EDTSpecial Marine WarningOKX96 min
Sep 1, 10:12 PM EDTSpecial Marine WarningOKX20 min
Sep 1, 10:20 PM EDTSevere Thunderstorm WarningOKXWestchester55 min
Sep 1, 10:26 PM EDTSpecial Marine WarningOKX64 min
Sep 1, 10:30 PM EDTSevere Thunderstorm WarningOKXNassau, Suffolk45 min
Sep 1, 10:39 PM EDTTornado WarningOKXSuffolk36 min
Sep 1, 10:44 PM EDTSevere Thunderstorm WarningOKXNassau46 min
Sep 1, 10:47 PM EDTSpecial Marine WarningOKX118 min
Sep 1, 10:55 PM EDTSpecial Marine WarningOKX45 min
Sep 1, 11:11 PM EDTSevere Thunderstorm WarningOKXSuffolk64 min
Sep 1, 11:13 PM EDTFlash Flood WarningOKXSuffolk6 hr
Sep 1, 11:19 PM EDTSpecial Marine WarningOKX86 min
Sep 2, 12:13 AM EDTSevere Thunderstorm Warning Considerable damage threatOKXSuffolk92 min
Sep 2, 12:25 AM EDTFlash Flood WarningOKXNassau, Queens, Suffolk4 hr
Sep 2, 12:28 AM EDTSpecial Marine WarningOKX92 min
Sep 2, 12:48 AM EDTRiver Flood WarningOKXOrange, Ulster12 hr
Sep 2, 1:50 AM EDTSpecial Weather StatementOKXSuffolk40 min
Sep 2, 1:57 AM EDTSpecial Marine WarningOKX80 min
Sep 2, 2:30 AM EDTAreal Flood WarningOKXBronx, Nassau, Putnam, Queens, Rockland, Suffolk and 1 more8 hr
Sep 2, 3:50 AM EDTRip Current StatementOKXKings, Nassau, Queens, Suffolk16 hr
Sep 2, 4:38 AM EDTAreal Flood AdvisoryOKXNassau, Queens, Suffolk3 hr
Sep 2, 4:55 AM EDTAreal Flood AdvisoryOKXSuffolk3 hr
Sep 2, 7:49 AM EDTAreal Flood AdvisoryOKXOrange, Putnam, Rockland, Westchester10 hr
Sep 2, 10:07 AM EDTAreal Flood WarningOKXPutnam, Rockland, Westchester15 hr
Sep 2, 10:59 AM EDTSmall Craft AdvisoryOKX19 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2021Severe Thunderstorm Warnings in New York, 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.