Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS New York, NY

July 12, 2021Richmond County, New York

NWS New York, NY issued this special weather statement at Jul 12, 2021, 3:45 PM EDT for Richmond County, New York. It was in force for 30 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
Jul 12, 2021, 3:45 PM EDT (19:45 UTC)
Expired
Jul 12, 2021, 4:15 PM EDT
In force
30 min
Issued by
NWS New York, NY

County Richmond County, NY

The radar

The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 19:44 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.8 hours before the alert went out and 118 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 2021-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 857 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 2021-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
857 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
697 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 12, 11:42 AM EDT, 4 hours 3 minutes earlier.

Area forecast discussion, Jul 12, 11:42 AM EDT, 4 hours 3 minutes before
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      <div class="status" id="status">Temporary Notice</div>
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Hazardous weather outlook, Jul 12, 9:29 AM EDT, 6 hours 16 minutes before
Hazardous Weather Outlook
National Weather Service New York NY
929 AM EDT Mon Jul 12 2021

CTZ005-009-NJZ002-004-006-103>108-NYZ067>075-078-080-176>179-131330-
Northern Fairfield-Southern Fairfield-Western Passaic-
Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-Western Essex-
Eastern Essex-Western Union-Eastern Union-Orange-Putnam-Rockland-
Northern Westchester-Southern Westchester-New York (Manhattan)-Bronx-
Richmond (Staten Island)-Kings (Brooklyn)-Northwest Suffolk-
Southwest Suffolk-Northern Queens-Northern Nassau-Southern Queens-
Southern Nassau-
929 AM EDT Mon Jul 12 2021

...FLASH FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
TUESDAY MORNING...

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

.DAY ONE...Today and tonight.

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

   Flash Flood Watch.

There is also a slight risk of severe thunderstorms this afternoon
and tonight, with the strongest storms capable of producing damaging
straight line winds. An isolated brief tornado cannot be ruled out
from New York City north and west. Thunderstorms will also be
capable of producing frequent cloud to ground lightning.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.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.

CTZ006>008-010>012-131330-
Northern New Haven-Northern Middlesex-Northern New London-
Southern New Haven-Southern Middlesex-Southern New London-
929 AM EDT Mon Jul 12 2021

...FLASH FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
TUESDAY MORNING...

This Hazardous Weather Outlook is for southern Connecticut.

.DAY ONE...Today and tonight.

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

   Flash Flood Watch.

A few thunderstorms this afternoon may be capable of producing gusty
winds approaching severe limits.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

   Flash Flood Watch.

.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.

NYZ079-081-131330-
Northeast Suffolk-Southeast Suffolk-
929 AM EDT Mon Jul 12 2021

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low. A few
thunderstorms this afternoon may be capable of producing gusty
winds approaching severe limits.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time that would meet NWS
warning criteria.

.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.

ANZ335-338-345-353-355-131330-
Long Island Sound West of New Haven CT/Port Jefferson NY-
New York Harbor-
South Shore Bays from Jones Inlet through Shinnecock Bay-
Fire Island Inlet NY to Moriches Inlet NY out 20 nm-
Sandy Hook NJ to Fire Island Inlet NY out 20 nm-
929 AM EDT Mon Jul 12 2021

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Today and tonight.

There is a slight risk of severe thunderstorms this afternoon and
evening, with the strongest storms capable of producing damaging
straight line winds of over 50 kt. An isolated brief waterspout
cannot be ruled out from New York City north and west.

Thunderstorms this afternoon and tonight will also be capable of
producing frequent cloud to surface lightning, and heavy rain
reducing vsby below 1 nm.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time that would meet NWS
warning criteria.

.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.

ANZ331-332-340-350-131330-
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-
Peconic and Gardiners Bays-
Moriches Inlet NY to Montauk Point NY out 20 nm-
929 AM EDT Mon Jul 12 2021

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low. A few
thunderstorms this afternoon could produce gusty winds over 35 kt.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time that would meet NWS
warning criteria.

.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.

In the hours before

Special weather statement, Jul 12, 3:45 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service New York NY
345 PM EDT Mon Jul 12 2021

NJZ108-NYZ074-122015-
Eastern Union-Richmond (Staten Is.)-
345 PM EDT Mon Jul 12 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN UNION AND RICHMOND
COUNTIES...

At 345 PM EDT, a strong thunderstorm was located over Sayreville, or
near Perth Amboy, moving northeast at 25 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Elizabeth, Linden, Todt Hill, Huguenot, The Verrazano Narrows Bridge,
Port Richmond, Tottenville, Oakwood, Annadale, Rahway, New Dorp,
Roselle, Grasmere, Heartland Village and Greenridge.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

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.

LAT...LON 4050 7428 4051 7426 4052 7425 4055 7425
      4056 7422 4059 7421 4060 7422 4059 7429
      4061 7431 4069 7423 4066 7415 4064 7416
      4064 7412 4061 7403 4053 7410 4050 7422
TIME...MOT...LOC 1945Z 230DEG 22KT 4047 7429

JM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 2:18 AM EDTSpecial Weather StatementOKXBronx, Kings, Nassau, New York, Queens42 min
Jul 12, 3:37 PM EDTSpecial Marine WarningOKX38 min
Jul 12, 3:53 PM EDTAreal Flood AdvisoryOKXRichmond49 min
Jul 12, 4:18 PM EDTAreal Flood AdvisoryOKXBronx, New York52 min
Jul 12, 5:38 PM EDTAreal Flood AdvisoryOKXOrange, Rockland112 min
Jul 12, 5:41 PM EDTSpecial Weather StatementOKXRockland49 min
Jul 12, 5:51 PM EDTSevere Thunderstorm WarningOKXOrange, Rockland39 min
Jul 12, 6:09 PM EDTFlash Flood WarningOKXOrange, Rockland3 hr
Jul 12, 6:15 PM EDTTornado WarningOKXOrange, Rockland45 min
Jul 12, 6:58 PM EDTSevere Thunderstorm WarningOKXOrange, Rockland41 min
Jul 12, 7:46 PM EDTAreal Flood AdvisoryOKXOrange119 min
Jul 12, 4:55 PM EDTAreal Flood AdvisoryOKXBergen32 min

Nearby

Special Weather Statements in New York, 2021Every special weather statement 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.