Alert archive / New York / Special Weather Statements in 2017

Special Weather Statement, NWS Burlington, VT

August 3, 2017St. Lawrence County, New York

NWS Burlington, VT issued this special weather statement at Aug 3, 2017, 4:58 PM EDT for St. Lawrence County, New York. It was in force for 47 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 3, 2017, 4:58 PM EDT (20:58 UTC)
Expired: Aug 3, 2017, 5:45 PM EDT
In force: 47 min
Issued by: NWS Burlington, VT

County St. Lawrence County, NY

The radar

The Ft Drum radar (KTYX), 142 km from the middle of the area, began a volume at 21:01 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

Albany, NY (KALY), launched 12:00Z, 9.0 hours before the alert went out and 263 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: 12 J/kg
Mixed-layer CIN: -273 J/kg
Mixed-layer LCL: 855 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 30 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 Burlington, VT wrote its last area forecast discussion before this special weather statement went out at Aug 3, 4:50 PM EDT, 8 minutes earlier.

Area forecast discussion, Aug 3, 4:50 PM EDT, 8 minutes before

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Hazardous weather outlook, Aug 3, 3:27 AM EDT, 13 hours 31 minutes before

Hazardous Weather Outlook
National Weather Service Burlington VT
327 AM EDT Thu Aug 3 2017

NYZ026>031-034-035-087-VTZ001>012-016>019-040730-
Northern St. Lawrence-Northern Franklin-Eastern Clinton-
Southeastern St. Lawrence-Southern Franklin-Western Clinton-
Western Essex-Eastern Essex-Southwestern St. Lawrence-Grand Isle-
Western Franklin-Orleans-Essex-Western Chittenden-Lamoille-Caledonia-
Washington-Western Addison-Orange-Western Rutland-Windsor-
Eastern Franklin-Eastern Chittenden-Eastern Addison-Eastern Rutland-
327 AM EDT Thu Aug 3 2017

This Hazardous Weather Outlook is for northern New York, central
Vermont, northeast Vermont, northwest Vermont and southern Vermont.

.DAY ONE...Today and Tonight.

Scattered thunderstorms are expected to develop by early this
afternoon and decrease in areal coverage around sunset. The primary
threat will be gusty winds...small hail...and localized heavy down
pours. A few stronger pulses will be capable of isolated damaging
wind gusts and 1 inch hail...along with very heavy rainfall
rates...which may cause some isolated flash flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Additional thunderstorms are expected on Friday aftnoon into Friday
Night with primary threat being gusty winds and heavy rainfall. A few
severe storms are possible...especially over northern New York.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Aug 3, 3:01 PM EDT, 1 hour 57 minutes before

Special Weather Statement
National Weather Service Burlington VT
301 PM EDT THU AUG 3 2017

NYZ030-031-032000-
Southern Franklin-Western Clinton-
301 PM EDT THU AUG 3 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN CLINTON AND
NORTHERN FRANKLIN COUNTIES...

At 301 PM EDT, a strong thunderstorm was located 7 miles northwest of
Debar Mountain, moving northeast at 15 mph.

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

Locations impacted include...
Churubusco, Merrill, Bryants Mill, Santa Clara, Whippleville, Duane
Center, Ellenburg Mountain, Azure Mountain, Harrigan, Ellenburg
Center, Owls Head, Chasm Falls and Brainardsville.

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

LAT...LON 4478 7379 4446 7457 4464 7459 4499 7392
TIME...MOT...LOC 1901Z 237DEG 11KT 4464 7436

RDeal

Special weather statement, Aug 3, 3:31 PM EDT, 1 hour 27 minutes before

Special Weather Statement
National Weather Service Burlington VT
331 PM EDT THU AUG 3 2017

NYZ087-032015-
Southwestern St. Lawrence-
331 PM EDT THU AUG 3 2017

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL ST. LAWRENCE
COUNTY...

At 330 PM EDT, a strong thunderstorm was located near Redwood, moving
northeast at 10 mph.

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

Locations impacted include...
Gouverneur, Richville, Edwardsville, Hammond, Morristown, Rossie,
Chippewa Bay, South Hammond, Nelson Corner, North Hammond, Jacques
Cartier State Park, North Gouverneur and Schermerhorn Landing.

LAT...LON 4441 7579 4442 7579 4442 7581 4443 7579
      4443 7577 4444 7579 4444 7577 4445 7576
      4445 7578 4447 7577 4447 7579 4451 7575
      4464 7559 4437 7526 4427 7557 4439 7583
      4441 7584
TIME...MOT...LOC 1930Z 238DEG 10KT 4434 7573

RDeal

Special weather statement, Aug 3, 4:19 PM EDT, 39 minutes before

Special Weather Statement
National Weather Service Burlington VT
419 PM EDT THU AUG 3 2017

NYZ026-027-029-030-087-032100-
Northern St. Lawrence-Northern Franklin-Southeastern St.
Lawrence-Southern Franklin-Southwestern St. Lawrence-
419 PM EDT THU AUG 3 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL FRANKLIN AND
NORTHEASTERN ST. LAWRENCE COUNTIES...

At 418 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Canton to near Parishville to near
Lake Ozonia to near Madawaska. Movement was northeast at 30 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Potsdam, Canton, Moira, Parishville, Debar Mountain, Bryants Mill,
Norwood, Brasher Falls, Lake Ozonia, Madawaska, Brushton,
Lawrenceville, Dickinson, Hopkinton, Santa Clara, North Stockholm,
West Bangor, Dickinson Center, Duane Center and West Parishville.

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

LAT...LON 4482 7490 4487 7456 4471 7413 4457 7403
      4432 7447 4448 7459 4457 7493 4455 7528
TIME...MOT...LOC 2018Z 235DEG 25KT 4466 7509 4467 7485 4460 7446 4449
7434

RDeal

Special weather statement, Aug 3, 4:22 PM EDT, 36 minutes before

Special Weather Statement
National Weather Service Burlington VT
422 PM EDT THU AUG 3 2017

VTZ011-012-019-032045-
Western Rutland-Eastern Rutland-Windsor-
422 PM EDT THU AUG 3 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN RUTLAND AND WEST
CENTRAL WINDSOR COUNTIES...

At 421 PM EDT, a strong thunderstorm was located over Mendon, moving
northeast at 15 mph.

Winds have already gusted to 40 mph at the RUT airport with this
storm and continue to be capable of gusting in excess of 40 mph.

Locations impacted include...
Rutland, Stockbridge, Chittenden, Mendon, Pittsfield, Killington,
Shrewsbury, Rutland City, Bridgewater, Barnard, Clarendon, Plymouth,
Pittsford, East Pittsford, North Clarendon, South Sherburne, Giffords
Woods State Forest Park, North Sherburne, Center Rutland and Gifford
Woods State Park.

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

LAT...LON 4359 7303 4384 7292 4370 7259 4351 7281
TIME...MOT...LOC 2021Z 209DEG 14KT 4362 7288

Special weather statement, Aug 3, 4:27 PM EDT, 31 minutes before

Special Weather Statement
National Weather Service Burlington VT
427 PM EDT THU AUG 3 2017

NYZ034-035-VTZ005-032115-
Western Essex-Eastern Essex-Western Chittenden-
427 PM EDT THU AUG 3 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN ESSEX AND WEST
CENTRAL CHITTENDEN COUNTIES...

At 427 PM EDT, a strong thunderstorm was located near Elizabethtown,
moving northeast at 15 mph.

Winds in excess of 30 mph and pea size hail are possible with this
storm.

Locations impacted include...
Essex, Willsboro, Westport, Elizabethtown, Shelburne, Keeseville,
Charlotte, Lewis, Brown Point, Mcneil Cove, Sloop Island, Shelburne
Falls, Wings Point, Meach Island, Hatch Point, Willsboro Point,
Cannon Point, Sled Runner Point, Orchard Point and Queneska Island.

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

LAT...LON 4438 7316 4414 7348 4425 7369 4449 7351
      4449 7350 4450 7349 4451 7347 4452 7346
      4454 7346
TIME...MOT...LOC 2027Z 216DEG 12KT 4426 7353

Hanson

Special weather statement, Aug 3, 4:58 PM EDT, 0 minutes before

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The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 2, 9:46 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, Grand Isle	44 min
Aug 3, 12:46 PM EDT	Special Weather Statement	BTV	Orleans	59 min
Aug 3, 4:22 PM EDT	Special Weather Statement	BTV	Windsor	23 min
Aug 3, 4:27 PM EDT	Special Weather Statement	BTV	Chittenden	48 min
Aug 3, 5:14 PM EDT	Special Weather Statement	BTV	Caledonia	46 min
Aug 3, 6:06 PM EDT	Special Weather Statement	BTV	Orange	39 min
Aug 3, 12:40 PM EDT	Special Weather Statement	BTV	Franklin	65 min
Aug 3, 1:23 PM EDT	Special Weather Statement	BTV	Clinton	52 min
Aug 3, 1:46 PM EDT	Special Weather Statement	BTV	Clinton	44 min
Aug 3, 1:53 PM EDT	Special Weather Statement	BTV	Clinton	37 min
Aug 3, 2:20 PM EDT	Special Weather Statement	BTV	Franklin	25 min
Aug 3, 2:53 PM EDT	Special Weather Statement	BTV	St. Lawrence	37 min
Aug 3, 3:01 PM EDT	Special Weather Statement	BTV	Franklin	59 min
Aug 3, 3:31 PM EDT	Special Weather Statement	BTV	St. Lawrence	44 min
Aug 3, 4:19 PM EDT	Special Weather Statement	BTV	Franklin	41 min
Aug 3, 4:32 PM EDT	Flash Flood Warning	BTV	Franklin, St. Lawrence	4 hr

Nearby

Special Weather Statements in New York, 2017 Every special weather statement in 2017

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.