Alert archive / Connecticut / Special Weather Statements in 2018

Special Weather Statement, NWS New York, NY

August 2, 2018

NWS New York, NY issued this special weather statement at Aug 2, 2018, 5:06 PM EDT. It was in force for 39 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: Aug 2, 2018, 5:06 PM EDT (21:06 UTC)
Expired: Aug 2, 2018, 5:45 PM EDT
In force: 39 min
Issued by: NWS New York, NY

The radar

The Brookhaven radar (KOKX), 78 km from the middle of the area, began a volume at 21:09 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, 9.1 hours before the alert went out and 78 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1199 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.8

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 Aug 2, 4:59 PM EDT, 7 minutes earlier.

Area forecast discussion, Aug 2, 4:59 PM EDT, 7 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Aug 2, 4:52 PM EDT, 14 minutes before

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In the hours before

Special weather statement, Aug 2, 3:49 PM EDT, 1 hour 17 minutes before

Special Weather Statement
National Weather Service New York NY
349 PM EDT THU AUG 2 2018

NJZ002-004-103>106-NYZ067>070-022030-
Eastern Essex-Western Bergen-Western Passaic-Western Essex-Eastern
Bergen-Eastern Passaic-Putnam-Rockland-Northern Westchester-Orange-
349 PM EDT THU AUG 2 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT PASSAIC...BERGEN...
ESSEX...NORTHERN WESTCHESTER...SOUTHEASTERN ORANGE...WESTERN PUTNAM
AND ROCKLAND COUNTIES...

At 349 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Highland Lake to Mendham. Movement
was east at 35 mph.

Winds in excess of 30 mph are possible with these storms.

Locations impacted include...
Paterson, Passaic, Wayne, Bloomfield, Hackensack, New City, Orange,
Bergenfield, Paramus, West Milford, Ridgewood, Peekskill, Lyndhurst,
Monsey and Rutherford.

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

LAT...LON 4109 7450 4120 7437 4125 7447 4151 7373
      4081 7404 4076 7421 4074 7437 4079 7437
      4082 7433 4086 7432 4090 7434 4090 7427
      4093 7429 4097 7428 4100 7430 4103 7442
      4102 7443 4105 7445 4104 7450
TIME...MOT...LOC 1949Z 249DEG 30KT 4121 7442 4076 7462

JMC

Special weather statement, Aug 2, 4:06 PM EDT, 1 hour before

Special Weather Statement
National Weather Service New York NY
406 PM EDT THU AUG 2 2018

CTZ005-006-022045-
Northern Fairfield-Northern New Haven-
406 PM EDT THU AUG 2 2018

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL FAIRFIELD AND
CENTRAL NEW HAVEN COUNTIES...

At 406 PM EDT, strong thunderstorms were clustered near Seymour, or
near Southbury, moving northeast at 30 mph.

Winds in excess of 40 mph are possible with this storm.

This storm will be near...
  Seymour around 410 PM EDT.
  Woodbridge around 415 PM EDT.
  Naugatuck and Beacon Falls around 420 PM EDT.
  Hamden and Prospect around 425 PM EDT.
  Cheshire around 430 PM EDT.
  Wallingford around 440 PM EDT.
  Meriden and Middlefield around 445 PM EDT.

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

LAT...LON 4156 7295 4156 7288 4154 7285 4157 7284
      4155 7282 4157 7280 4158 7275 4148 7274
      4148 7273 4142 7275 4129 7319 4146 7331
      4151 7323 4151 7316 4156 7316 4157 7309
      4159 7306 4161 7305 4164 7298 4164 7294
TIME...MOT...LOC 2006Z 245DEG 25KT 4142 7314

JMC

Special weather statement, Aug 2, 4:21 PM EDT, 45 minutes before

Special Weather Statement
National Weather Service New York NY
421 PM EDT THU AUG 2 2018

CTZ005-006-009-NYZ068-070-071-022100-
Northern Fairfield-Southern Fairfield-Northern New
Haven-Putnam-Southern Westchester-Northern Westchester-
421 PM EDT THU AUG 2 2018

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT FAIRFIELD...WEST
CENTRAL NEW HAVEN...WESTCHESTER AND EASTERN PUTNAM COUNTIES...

At 421 PM EDT, strong thunderstorms were clustered over Bedford, or
near Mount Kisco, moving northeast at 30 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Stamford, Norwalk, Danbury, Shelton, Southbury, New Canaan, Mount
Kisco, Mahopac, Sherman, Brewster, Newtown, Fairfield, Greenwich,
Trumbull and Harrison.

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

LAT...LON 4153 7345 4149 7344 4151 7339 4151 7338
      4149 7337 4147 7331 4149 7333 4151 7332
      4151 7323 4134 7303 4101 7371 4125 7395
      4153 7354 4153 7353 4154 7353 4158 7347
TIME...MOT...LOC 2021Z 243DEG 28KT 4120 7366

JMC

Special weather statement, Aug 2, 4:38 PM EDT, 28 minutes before

Special Weather Statement
National Weather Service New York NY
438 PM EDT THU AUG 2 2018

CTZ009-NJZ103-104-NYZ068>071-022115-
Southern Fairfield-Western Bergen-Eastern
Bergen-Putnam-Rockland-Southern Westchester-Northern Westchester-
438 PM EDT THU AUG 2 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHERN FAIRFIELD...
CENTRAL BERGEN...WESTCHESTER...CENTRAL PUTNAM AND ROCKLAND
COUNTIES...

At 438 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Peekskill to Paramus. Movement was
northeast at 50 mph.

Winds in excess of 30 mph are possible with these storms.

Locations impacted include...
Stamford, Hackensack, New City, Bergenfield, Paramus, Ossining,
Ridgewood, Peekskill, New Canaan, Monsey, Nanuet, Haverstraw,
Tarrytown, Mount Kisco and Dobbs Ferry.

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

LAT...LON 4115 7349 4085 7412 4086 7411 4091 7413
      4128 7404 4151 7373 4152 7364
TIME...MOT...LOC 2038Z 227DEG 44KT 4128 7398 4095 7408

JMC

Special weather statement, Aug 2, 4:51 PM EDT, 15 minutes before

Special Weather Statement
National Weather Service New York NY
451 PM EDT THU AUG 2 2018

CTZ006-007-022130-
Northern New Haven-Northern Middlesex-
451 PM EDT THU AUG 2 2018

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

At 451 PM EDT, a strong thunderstorm was located over Cheshire, or
near Wallingford, moving northeast at 25 mph.

Winds in excess of 40 mph are possible with this storm.

This storm will be near...
  Wallingford around 455 PM EDT.
  Durham around 505 PM EDT.
  Middlefield around 510 PM EDT.
  Meriden around 515 PM EDT.
  Middletown around 520 PM EDT.
  East Hampton and Cromwell around 530 PM EDT.

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

LAT...LON 4153 7244 4137 7290 4152 7303 4157 7294
      4156 7295 4156 7288 4154 7285 4157 7285
      4157 7283 4155 7282 4157 7280 4158 7275
      4159 7275 4161 7272 4163 7271 4164 7263
      4163 7262 4164 7250
TIME...MOT...LOC 2051Z 239DEG 22KT 4149 7289

JMC

Special weather statement, Aug 2, 5:06 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service New York NY
506 PM EDT THU AUG 2 2018

CTZ005-006-NYZ068-022145-
Northern Fairfield-Northern New Haven-Putnam-
506 PM EDT THU AUG 2 2018

...STRONG THUNDERSTORMS WILL AFFECT CENTRAL FAIRFIELD...NORTHWESTERN
NEW HAVEN AND EASTERN PUTNAM COUNTIES...

At 504 PM EDT, strong thunderstorms were located over northern
portions of Fairfield and New Haven counties, moving northeast at 35
mph.

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

Locations impacted include...
Waterbury, Danbury, Shelton, Naugatuck, Southbury, Wolcott, Sherman,
Newtown, Hamden, Trumbull, Cheshire, Ridgefield, North Haven, Monroe
and Bethel.

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

LAT...LON 4156 7295 4156 7290 4137 7289 4122 7349
      4128 7354 4136 7354 4136 7358 4151 7364
      4153 7353 4155 7353 4157 7347 4149 7344
      4151 7339 4147 7331 4149 7333 4151 7332
      4151 7316 4156 7316 4164 7294
TIME...MOT...LOC 2104Z 238DEG 28KT 4144 7335

JMC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 2:46 PM EDT	Special Weather Statement	OKX	Westchester	44 min
Aug 2, 3:49 PM EDT	Special Weather Statement	OKX	Rockland	41 min
Aug 2, 4:21 PM EDT	Special Weather Statement	OKX	Westchester	39 min
Aug 2, 4:38 PM EDT	Special Weather Statement	OKX	Putnam, Rockland, Westchester	37 min
Aug 2, 4:47 PM EDT	Areal Flood Advisory	OKX	Putnam, Westchester	118 min
Aug 2, 3:37 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	23 min
Aug 2, 4:06 PM EDT	Special Weather Statement	OKX		39 min
Aug 2, 4:51 PM EDT	Special Weather Statement	OKX		39 min
Aug 2, 6:03 PM EDT	Special Weather Statement	OKX		42 min
Aug 2, 6:07 PM EDT	Areal Flood Advisory	OKX	Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region	83 min
Aug 2, 6:46 PM EDT	Special Weather Statement	OKX		44 min

Nearby

Special Weather Statements in Connecticut, 2018 Every special weather statement in 2018

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.