Alert archive / New York / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 25, NWS New York, NY

June 30, 2019Putnam County, Westchester County, New York; Greater Bridgeport Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at Jun 30, 2019, 1:33 PM EDT for Putnam County, Westchester County, New York; Greater Bridgeport Planning Region, Connecticut. It was in force for 42 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
Jun 30, 2019, 1:33 PM EDT (17:33 UTC)
Expired
Jun 30, 2019, 2:15 PM EDT
In force
42 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Greater Bridgeport Planning Region, CT, Putnam County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 75 km from the middle of the area, began a volume at 17:36 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, 5.6 hours before the alert went out and 75 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 2019-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 175 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 2019-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939587897117Sfc1 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
175 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
1383 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

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 Jun 30, 12:54 PM EDT, 39 minutes earlier.

Area forecast discussion, Jun 30, 12:54 PM EDT, 39 minutes before
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Hazardous weather outlook, Jun 30, 9:20 AM EDT, 4 hours 13 minutes before
Hazardous Weather Outlook
National Weather Service New York NY
920 AM EDT Sun Jun 30 2019

CTZ005>012-NYZ078-079-177-011330-
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-Northwestern Suffolk-
Northeastern Suffolk-Northern Nassau-
920 AM EDT Sun Jun 30 2019

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

.DAY ONE...Today and tonight.

An isolated strong to severe thunderstorm is possible this afternoon
with a cold frontal passage. The main threats will be strong to
damaging wind gusts and small hail.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

NYZ080-081-179-011330-
Southwestern Suffolk-Southeastern Suffolk-Southern Nassau-
920 AM EDT Sun Jun 30 2019

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...Today and tonight.

An isolated strong to severe thunderstorm is possible this afternoon
with a cold frontal passage. The main threats will be strong to
damaging wind gusts and small hail.

There is a moderate risk of rip current development at the ocean
beaches this afternoon.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

ANZ330-335-340-345-350-353-011330-
Long Island Sound East of New Haven CT/Port Jefferson NY-
Long Island Sound West of New Haven CT/Port Jefferson NY-
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-
920 AM EDT Sun Jun 30 2019

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Today and tonight.

An isolated strong to severe thunderstorm is possible this afternoon
with a cold frontal passage. The main threats will be strong to
damaging wind gusts and small hail.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NJZ002-004-006-103>108-NYZ067>074-176-011330-
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)-Northern Queens-
920 AM EDT Sun Jun 30 2019

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

.DAY ONE...Today and tonight.

An isolated strong thunderstorm is possible this afternoon with a
cold frontal passage. The main threat will be strong wind gusts and
small hail.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NYZ075-178-011330-
Kings (Brooklyn)-Southern Queens-
920 AM EDT Sun Jun 30 2019

This Hazardous Weather Outlook is for southeast New York.

.DAY ONE...Today and tonight.

An isolated strong thunderstorm is possible this afternoon with a
cold frontal passage. The main threat will be strong wind gusts and
small hail.

There is a moderate risk of rip current development at the ocean
beaches this afternoon.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

ANZ338-355-011330-
New York Harbor-Sandy Hook NJ to Fire Island Inlet NY out 20 nm-
920 AM EDT Sun Jun 30 2019

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jun 30, 12:28 PM EDT, 1 hour 5 minutes before
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Special weather statement, Jun 30, 12:43 PM EDT, 50 minutes before
Special Weather Statement
National Weather Service New York NY
1243 PM EDT Sun Jun 30 2019

NYZ079-081-301730-
Southeast Suffolk-Northeast Suffolk-
1243 PM EDT Sun Jun 30 2019

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL SUFFOLK COUNTY...

At 1242 PM EDT, strong thunderstorms were located from Riverhead
northeast along the North Fork of Long Island, moving southeast at
35 mph.

Wind gusts up to 50 mph and pea size hail are possible with this
storm.

Locations impacted include...
Riverhead, Southold, Mattituck, Southampton, Westhampton, Sag Harbor,
Bridgehampton, Gardiners Island, Calverton, Noyack, Montauk Point,
Shelter Island, Greenport, Shinnecock Hills and East Hampton.

LAT...LON 4107 7186 4087 7235 4078 7268 4097 7283
      4099 7259 4116 7228 4116 7223 4109 7238
      4108 7228 4100 7230 4102 7225 4105 7224
      4101 7219 4106 7217 4106 7213 4103 7211
      4106 7210 4112 7213 4110 7208 4100 7210
TIME...MOT...LOC 1642Z 317DEG 32KT 4093 7260

DS
Local storm report, Jun 30, 12:59 PM EDT, 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1259 PM EDT SUN JUN 30 2019

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

1240 PM     MARINE TSTM WIND BAITING HOLLOW          40.96N  72.74W
06/30/2019  M45 MPH          SUFFOLK            NY   WXFLOW

&&

CJB
Local storm report, Jun 30, 1:07 PM EDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
107 PM EDT SUN JUN 30 2019

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

1253 PM     MARINE TSTM WIND 1 SW OAKVILLE           40.85N  72.62W
06/30/2019  M39 MPH          SUFFOLK            NY   WXFLOW

&&

CJB
Local storm report, Jun 30, 1:10 PM EDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
110 PM EDT SUN JUN 30 2019

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

1219 PM     MARINE TSTM WIND 1 NNE CRYSTAL BROOK     40.96N  73.04W
06/30/2019  M46 MPH          SUFFOLK            NY   WXFLOW

&&

CJB
Special weather statement, Jun 30, 1:19 PM EDT, 14 minutes before
Special Weather Statement
National Weather Service New York NY
119 PM EDT Sun Jun 30 2019

CTZ005-006-NYZ068-070-301800-
Northern Fairfield-Northern New Haven-Putnam-Northern Westchester-
119 PM EDT Sun Jun 30 2019

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL FAIRFIELD...WESTERN NEW
HAVEN...NORTHERN WESTCHESTER AND EASTERN PUTNAM COUNTIES...

At 119 PM EDT, a strong thunderstorm was located over Wingdale, or
near Pawling, moving southeast at 35 mph.

Wind gusts of 50 to 55 mph and half inch hail are possible with this
storm.

Locations impacted include...
Danbury, Southbury, Lake Carmel, Sherman, Brewster, Newtown,
Ridgefield, Bethel, Brookfield, New Fairfield, Redding, Carmel,
Oxford, Patterson and Putnam Lake.

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 4166 7349 4165 7349 4164 7350 4149 7344
      4151 7339 4149 7337 4147 7331 4149 7333
      4151 7332 4151 7325 4144 7315 4130 7335
      4130 7362 4150 7378 4153 7360 4153 7353
      4167 7352
TIME...MOT...LOC 1719Z 327DEG 32KT 4162 7361

DS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 8:06 PM EDTSpecial Marine WarningOKX24 min
Jun 30, 3:09 AM EDTSmall Craft AdvisoryOKX22 hr
Jun 30, 10:46 AM EDTSpecial Weather StatementOKXPutnam, Westchester44 min
Jun 30, 11:56 AM EDTSpecial Marine WarningOKX49 min
Jun 30, 12:12 PM EDTSpecial Weather StatementOKXSuffolk48 min
Jun 30, 12:19 PM EDTSevere Thunderstorm WarningOKXSuffolk25 min
Jun 30, 12:41 PM EDTSpecial Marine WarningOKX35 min
Jun 30, 12:43 PM EDTSpecial Weather StatementOKXSuffolk47 min
Jun 30, 1:00 PM EDTSpecial Marine WarningOKX60 min
Jun 30, 1:48 PM EDTSpecial Weather StatementOKXPutnam42 min
Jun 30, 1:58 PM EDTSevere Thunderstorm WarningOKXWestchester47 min
Jun 30, 2:09 PM EDTSpecial Marine WarningOKX51 min
Jun 30, 2:10 PM EDTSpecial Weather StatementOKXWestchester50 min
Jun 30, 2:30 PM EDTSevere Thunderstorm WarningOKXSuffolk45 min
Jun 30, 2:34 PM EDTSevere Thunderstorm WarningOKXSuffolk41 min
Jun 30, 2:41 PM EDTSpecial Marine WarningOKX94 min
Jun 30, 2:42 PM EDTSpecial Weather StatementOKXBronx, New York48 min
Jun 30, 3:29 PM EDTSpecial Marine WarningOKX61 min
Jun 30, 4:09 PM EDTSpecial Marine WarningOKX52 min
Jun 30, 4:31 PM EDTSpecial Weather StatementOKXSuffolk44 min
Jun 30, 4:36 PM EDTSevere Thunderstorm WarningOKXSuffolk24 min
Jun 30, 4:37 PM EDTSpecial Marine WarningOKX26 min
Jun 30, 2:21 PM EDTSpecial Weather StatementOKXBergen, Passaic39 min
Jun 29, 8:01 PM EDTSpecial Weather StatementOKX29 min
Jun 29, 8:33 PM EDTSpecial Weather StatementOKX42 min
Jun 30, 11:31 AM EDTSpecial Weather StatementOKX44 min
Jun 30, 1:19 PM EDTSpecial Weather StatementOKX41 min
Jun 30, 2:48 PM EDTSpecial Weather StatementOKX42 min
Jun 30, 3:04 PM EDTSpecial Weather StatementOKX41 min
Jun 30, 3:15 PM EDTSevere Thunderstorm WarningOKXLower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region60 min
Jun 30, 3:45 PM EDTSevere Thunderstorm WarningOKXLower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region32 min
Jun 30, 4:03 PM EDTSpecial Weather StatementOKX57 min

Nearby

Severe Thunderstorm Warnings in New York, 2019Severe Thunderstorm Warnings in Connecticut, 2019Every severe thunderstorm warning in 2019

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.