Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS New York, NY

May 16, 2021Putnam County, New York

NWS New York, NY issued this special weather statement at May 16, 2021, 2:37 PM EDT for Putnam County, New York. It was in force for 38 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
May 16, 2021, 2:37 PM EDT (18:37 UTC)
Expired
May 16, 2021, 3:15 PM EDT
In force
38 min
Issued by
NWS New York, NY

County Putnam County, NY

The radar

The Brookhaven radar (KOKX), 97 km from the middle of the area, began a volume at 18:40 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, 6.6 hours before the alert went out and 97 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 2021-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 24 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 2021-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
24 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
2142 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 May 16, 1:55 PM EDT, 42 minutes earlier.

Area forecast discussion, May 16, 1:55 PM EDT, 42 minutes before
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</head>
<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, May 16, 4:08 AM EDT, 10 hours 29 minutes before
Hazardous Weather Outlook
National Weather Service New York NY
408 AM EDT Sun May 16 2021

CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-170815-
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-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-
Northeast Suffolk-Southwest Suffolk-Southeast Suffolk-
Northern Queens-Northern Nassau-Southern Queens-Southern Nassau-
408 AM EDT Sun May 16 2021

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

.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 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.

ANZ331-332-335-338-340-345-350-353-355-170815-
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-
408 AM EDT Sun May 16 2021

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 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, May 16, 12:05 PM EDT, 2 hours 32 minutes before
Special Weather Statement
National Weather Service New York NY
1205 PM EDT Sun May 16 2021

CTZ005-006-161645-
Northern Fairfield-Northern New Haven-
1205 PM EDT Sun May 16 2021

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL FAIRFIELD AND
NORTHWESTERN NEW HAVEN COUNTIES...

At 1204 PM EDT, a strong thunderstorm was located over Newtown,
moving northeast at 10 mph.

Locations impacted include...
Waterbury, Shelton, Naugatuck, Southbury, Newtown, Hamden, Trumbull,
Monroe, Bethel, Seymour, Brookfield, Derby, Prospect, Woodbridge and
Middlebury.

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

LAT...LON 4142 7292 4128 7327 4143 7341 4148 7335
      4147 7333 4147 7331 4149 7333 4151 7331
      4151 7316 4156 7317 4157 7310 4159 7308
TIME...MOT...LOC 1604Z 233DEG 10KT 4141 7327

JE
Special weather statement, May 16, 12:08 PM EDT, 2 hours 29 minutes before
Special Weather Statement
National Weather Service New York NY
1208 PM EDT Sun May 16 2021

CTZ005-NYZ068-161645-
Northern Fairfield-Putnam-
1208 PM EDT Sun May 16 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL FAIRFIELD AND
EASTERN PUTNAM COUNTIES...

At 1207 PM EDT, a strong thunderstorm was located over Lake Carmel,
moving east at 5 mph.

Locations impacted include...
Danbury, Mahopac, Lake Carmel, Sherman, Brewster, Ridgefield, Bethel,
Brookfield, New Fairfield, Redding, Carmel, Patterson, Putnam Lake,
Brewster Hill and Peach Lake.

Cloud to ground lightning has occurred with this storm. Lightning can
strike 10 miles away from a thunderstorm. Seek a safe shelter inside
a building or vehicle.

LAT...LON 4152 7344 4150 7344 4151 7340 4130 7343
      4133 7355 4137 7355 4135 7367 4137 7375
      4145 7381 4151 7376 4153 7360 4153 7353
      4156 7353 4157 7346
TIME...MOT...LOC 1607Z 275DEG 6KT 4146 7364

JE
Special weather statement, May 16, 12:49 PM EDT, 1 hour 48 minutes before
Special Weather Statement
National Weather Service New York NY
1249 PM EDT Sun May 16 2021

CTZ005-006-161730-
Northern Fairfield-Northern New Haven-
1249 PM EDT Sun May 16 2021

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL FAIRFIELD AND WEST
CENTRAL NEW HAVEN COUNTIES...

At 1248 PM EDT, a strong thunderstorm was located near Monroe, or
near Newtown, moving northeast at 15 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
New Haven, Danbury, Shelton, Southbury, Newtown, Trumbull, Monroe,
Bethel, Seymour, Brookfield, Orange, Derby, Redding, Woodbridge and
Middlebury.

LAT...LON 4144 7306 4133 7298 4131 7301 4131 7306
      4129 7307 4127 7309 4122 7332 4140 7345
      4147 7338 4148 7335 4147 7331 4148 7332
      4151 7323 4151 7318
TIME...MOT...LOC 1648Z 238DEG 12KT 4133 7329

MW
Special weather statement, May 16, 1:16 PM EDT, 1 hour 21 minutes before
Special Weather Statement
National Weather Service New York NY
116 PM EDT Sun May 16 2021

CTZ006-007-161800-
Northern New Haven-Northern Middlesex-
116 PM EDT Sun May 16 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL NEW HAVEN AND
NORTHERN MIDDLESEX COUNTIES...

At 115 PM EDT, a strong thunderstorm was located over Berlin, or near
Meriden, moving southeast at 15 mph.

Winds in excess of 30 mph are possible with this storm.

Locations impacted include...
Meriden, Middletown, Wallingford, East Hampton, Durham, Cheshire,
North Branford, Cromwell, Portland, Haddam, Killingworth,
Middlefield, Lake Pocotopaug--East Hampton and Higganum.

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.

LAT...LON 4154 7246 4144 7254 4141 7264 4143 7265
      4144 7267 4140 7280 4154 7297 4156 7295
      4156 7288 4154 7285 4157 7284 4155 7282
      4157 7280 4158 7275 4159 7275 4161 7272
      4163 7271 4164 7267
TIME...MOT...LOC 1715Z 310DEG 14KT 4158 7280

MW
Special weather statement, May 16, 1:31 PM EDT, 1 hour 6 minutes before
Special Weather Statement
National Weather Service New York NY
131 PM EDT Sun May 16 2021

CTZ006-161815-
Northern New Haven-
131 PM EDT Sun May 16 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN NEW HAVEN COUNTY...

At 130 PM EDT, a strong thunderstorm was located over Middlebury, or
near Waterbury, moving southeast at 10 mph.

Winds in excess of 30 mph are possible with this storm.

Locations impacted include...
Waterbury, Wallingford, Naugatuck, Southbury, Wolcott, Hamden,
Cheshire, Seymour, Prospect, Woodbridge, Middlebury, Beacon Falls,
Bethany and Oxford.

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.

LAT...LON 4160 7293 4156 7295 4156 7289 4148 7285
      4136 7307 4141 7320 4143 7322 4151 7323
      4151 7316 4156 7316 4157 7309 4159 7308
      4159 7306 4161 7305 4162 7302 4163 7302
      4164 7298 4164 7294
TIME...MOT...LOC 1730Z 310DEG 9KT 4155 7311

MW
Special weather statement, May 16, 2:37 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service New York NY
237 PM EDT Sun May 16 2021

NYZ068-070-161915-
Putnam-Northern Westchester-
237 PM EDT Sun May 16 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN WESTCHESTER AND PUTNAM
COUNTIES...

At 237 PM EDT, a strong thunderstorm was located over Mahopac, moving
east at 10 mph.

Winds in excess of 30 mph are possible with this storm.

Locations impacted include...
Mahopac, Lake Carmel, Brewster, Cold Spring, Carmel, Fahnestock State
Park, Jefferson Valley, Patterson, Putnam Valley, Putnam Lake,
Brewster Hill, Golden's Bridge and Peach Lake.

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.

LAT...LON 4152 7353 4133 7355 4125 7363 4133 7396
      4140 7395 4140 7396 4147 7395 4148 7394
      4153 7360
TIME...MOT...LOC 1837Z 268DEG 10KT 4137 7379

MW

The office that day

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

IssuedProductOfficeCountiesLasted
May 16, 12:08 PM EDTSpecial Weather StatementOKXPutnam37 min
May 16, 5:13 PM EDTSpecial Weather StatementOKXBronx32 min
May 16, 12:05 PM EDTSpecial Weather StatementOKX40 min
May 16, 12:49 PM EDTSpecial Weather StatementOKX41 min
May 16, 1:16 PM EDTSpecial Weather StatementOKX44 min
May 16, 1:31 PM EDTSpecial Weather StatementOKX44 min
May 16, 3:05 PM EDTSpecial Weather StatementOKX40 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.