Alert archive / New York / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 80, NWS New York, NY

August 6, 2024Bronx County, New York County, Westchester County, New York; Bergen County, New Jersey

NWS New York, NY issued this severe thunderstorm warning at Aug 6, 2024, 4:53 PM EDT for Bronx County, New York County, Westchester County, New York; Bergen County, New Jersey. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 6, 2024, 4:53 PM EDT (20:53 UTC)
Expired
Aug 6, 2024, 6:00 PM EDT
In force
67 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Bergen County, NJ, Bronx County, NY, New York County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 90 km from the middle of the area, began a volume at 20:53 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
Aug 6, 1:54 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.9 hours before the alert went out and 90 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 12:00Z on 2024-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1440 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2024-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.193958Sfc1 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
1440 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
797 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New York, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 6, 4:50 PM EDT, 3 minutes earlier.

Area forecast discussion, Aug 6, 4:50 PM EDT, 3 minutes before
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Hazardous weather outlook, Aug 6, 3:41 PM EDT, 1 hour 12 minutes before
Hazardous Weather Outlook
National Weather Service New York NY
341 PM EDT Tue Aug 6 2024

NJZ002-004-006-103>108-NYZ067-069-071000-
Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-
Western Essex-Eastern Essex-Western Union-Eastern Union-Orange-
Rockland-
341 PM EDT Tue Aug 6 2024

...FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY MORNING...
...SEVERE THUNDERSTORM WATCH 606 IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for northeast New Jersey and
southeast New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.
   Flood Watch.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

There is the potential for additional scattered areas of flash
flooding Thursday and Friday, along with urban and poor drainage
flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

CTZ005>012-NYZ068-070>074-078-079-176-177-071000-
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-Putnam-Northern Westchester-
Southern Westchester-New York (Manhattan)-Bronx-
Richmond (Staten Island)-Northwest Suffolk-Northeast Suffolk-
Northern Queens-Northern Nassau-
341 PM EDT Tue Aug 6 2024

...FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY MORNING...

This Hazardous Weather Outlook is for southern Connecticut and
southeast New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

There is the potential for additional scattered areas of flash
flooding Thursday and Friday, along with urban and poor drainage
flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

NYZ075-080-081-178-179-071000-
Kings (Brooklyn)-Southwest Suffolk-Southeast Suffolk-Southern Queens-
Southern Nassau-
341 PM EDT Tue Aug 6 2024

...FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS AFTERNOON
THROUGH WEDNESDAY MORNING...
...HIGH RIP CURRENT RISK IN EFFECT UNTIL 9 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   High Rip Current Risk.
   Flood Watch.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

There is the potential for additional scattered areas of flash
flooding Thursday and Friday, along with urban and poor drainage
flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

ANZ331-332-335-338-340-345-350-353-355-071000-
Long Island Sound East of New Haven CT/Port Jefferson NY to the
Mouth of the Connecticut River-
Long Island Sound East of the Mouth of the Connecticut River-
Long Island Sound West of New Haven CT/Port Jefferson NY-
New York Harbor-Peconic and Gardiners Bays-
South Shore Bays from Jones Inlet through Shinnecock Bay-
Moriches Inlet NY to Montauk Point NY out 20 nm-
Fire Island Inlet NY to Moriches Inlet NY out 20 nm-
Sandy Hook NJ to Fire Island Inlet NY out 20 nm-
341 PM EDT Tue Aug 6 2024

This Hazardous Weather Outlook is for the Atlantic coastal waters,
New York Harbor, Long Island Sound, and the Long Island bays.

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There is a low probability for widespread hazardous weather that
would meet NWS warning criteria.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

In the hours before

Special weather statement, Aug 6, 4:10 PM EDT, 43 minutes before
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Special weather statement, Aug 6, 4:23 PM EDT, 30 minutes before
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Local storm report, Aug 6, 4:32 PM EDT, 21 minutes before
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Local storm report, Aug 6, 4:44 PM EDT, 9 minutes before
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Special weather statement, Aug 6, 4:47 PM EDT, 6 minutes before
Special Weather Statement
National Weather Service New York NY
447 PM EDT Tue Aug 6 2024

NJZ104-NYZ071>073-176-177-062130-
Eastern Bergen NJ-Northern Queens NY-Bronx NY-
Southern Westchester NY-New York (Manhattan) NY-Northern Nassau NY-
447 PM EDT Tue Aug 6 2024

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN BERGEN...SOUTHERN
WESTCHESTER...BRONX...NEW YORK (MANHATTAN) AND NORTHWESTERN NASSAU
COUNTIES THROUGH 530 PM EDT...

At 447 PM EDT, Doppler radar was tracking a strong thunderstorm over
Riverdale, or near East Tremont, moving east at 5 mph.

HAZARD...Wind gusts up to 50 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to outdoor objects is
         possible.

Locations impacted include...
Yonkers, New Rochelle, White Plains, Mott Haven, East Tremont, Glen
Cove, Bergenfield, Rye, Great Neck, Throgs Neck Bridge, RFK Bridge,
Laguardia Airport, Harlem, Astoria, and Riverdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
northeastern New Jersey...and southeastern New York.

&&

LAT...LON 4077 7398 4079 7399 4080 7398 4080 7399
      4095 7405 4106 7369 4096 7366 4094 7367
      4088 7374 4086 7366 4091 7364 4080 7361
TIME...MOT...LOC 2047Z 261DEG 6KT 4087 7394

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

JP
Local storm report, Aug 6, 4:53 PM EDT, 0 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
453 PM EDT Tue Aug 6 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0449 PM     Marine Tstm Wind 1 S Mamaroneck          40.92N 73.73W
08/06/2024  M57 MPH          ANZ335             NY   Mesonet

            Mesonet station XLAR Larchmont Harbor.

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 12:18 PM EDTFlash Flood WarningOKXSuffolk72 min
Aug 6, 12:41 PM EDTAreal Flood AdvisoryOKXSuffolk44 min
Aug 6, 2:10 PM EDTAreal Flood AdvisoryOKXSuffolk33 min
Aug 6, 2:24 PM EDTAreal Flood AdvisoryOKXKings, Nassau, New York, Queens61 min
Aug 6, 2:43 PM EDTFlash Flood WarningOKXSuffolk75 min
Aug 6, 3:27 PM EDTAreal Flood AdvisoryOKXNassau, Suffolk93 min
Aug 6, 3:32 PM EDTSevere Thunderstorm WarningOKXNassau, Suffolk43 min
Aug 6, 3:34 PM EDTSpecial Marine WarningOKX56 min
Aug 6, 4:23 PM EDTSpecial Weather StatementOKXNassau52 min
Aug 6, 4:29 PM EDTSpecial Marine WarningOKX46 min
Aug 6, 4:33 PM EDTSpecial Marine WarningOKX57 min
Aug 6, 4:40 PM EDTAreal Flood AdvisoryOKXBronx, Nassau, New York, Westchester18 min
Aug 6, 4:47 PM EDTSpecial Weather StatementOKXBronx, New York43 min
Aug 6, 4:58 PM EDTFlash Flood WarningOKXBronx, Nassau, New York, Westchester5 hr
Aug 6, 5:45 PM EDTAreal Flood AdvisoryOKXRockland, Westchester4 hr
Aug 6, 5:56 PM EDTAreal Flood AdvisoryOKXNassau, Queens3 hr
Aug 6, 6:16 PM EDTAreal Flood AdvisoryOKXOrange, Rockland3 hr
Aug 6, 6:40 PM EDTFlash Flood WarningOKXNassau, Suffolk3 hr
Aug 6, 7:03 PM EDTAreal Flood AdvisoryOKXPutnam, Rockland, Westchester3 hr
Aug 6, 7:30 PM EDTAreal Flood AdvisoryOKXRichmond2 hr
Aug 6, 5:17 PM EDTSevere Thunderstorm WarningOKXEssex, Union43 min
Aug 6, 5:25 PM EDTAreal Flood AdvisoryOKXBergen, Essex, Hudson, Passaic, Union2 hr
Aug 6, 5:43 PM EDTFlash Flood WarningOKXBergen, Essex, Hudson, Passaic, Union4 hr
Aug 6, 6:03 PM EDTSpecial Weather StatementOKXBergen42 min
Aug 6, 6:20 PM EDTSpecial Weather StatementOKXBergen40 min
Aug 6, 6:23 PM EDTSpecial Weather StatementOKXPassaic52 min
Aug 6, 2:14 PM EDTAreal Flood AdvisoryOKXGreater Bridgeport Planning Region, Naugatuck Valley Planning Region109 min
Aug 6, 4:10 PM EDTSpecial Weather StatementOKX50 min
Aug 6, 5:20 PM EDTSpecial Weather StatementOKX40 min
Aug 6, 7:38 PM EDTSpecial Weather StatementOKX52 min

Nearby

Severe Thunderstorm Warnings in New York, 2024Severe Thunderstorm Warnings in New Jersey, 2024Every severe thunderstorm warning in 2024

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.