Alert archive / Vermont / Special Weather Statements in 2021

Special Weather Statement, NWS Burlington, VT

October 16, 2021Orleans County, Vermont

NWS Burlington, VT issued this special weather statement at Oct 16, 2021, 3:55 PM EDT for Orleans County, Vermont. It was in force for 50 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
Oct 16, 2021, 3:55 PM EDT (19:55 UTC)
Expired
Oct 16, 2021, 4:45 PM EDT
In force
50 min
Issued by
NWS Burlington, VT
Hail
0.00 in
Wind
40

County Orleans County, VT

The radar

The Burlington radar (KCXX), 96 km from the middle of the area, began a volume at 19:55 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, 7.9 hours before the alert went out and 279 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, Albany, NY at 12:00Z on 2021-10-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 50 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, Albany, NY at 12:00Z on 2021-10-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 279 square meters per square second.1939587897Sfc1 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
50 J/kg
Mixed-layer CIN
-197 J/kg
Mixed-layer LCL
735 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
279 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 Burlington, VT wrote its last area forecast discussion before this special weather statement went out at Oct 16, 3:08 PM EDT, 47 minutes earlier.

Area forecast discussion, Oct 16, 3:08 PM EDT, 47 minutes before
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Hazardous weather outlook, Oct 16, 3:52 PM EDT, 3 minutes before
Hazardous Weather Outlook
National Weather Service Burlington VT
352 PM EDT Sat Oct 16 2021

NYZ026>031-034-035-087-VTZ001-003-004-007-172000-
Northern St. Lawrence-Northern Franklin-Eastern Clinton-
Southeastern St. Lawrence-Southern Franklin-Western Clinton-
Western Essex-Eastern Essex-Southwestern St. Lawrence-Grand Isle-
Orleans-Essex-Caledonia-
352 PM EDT Sat Oct 16 2021

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

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

VTZ002-005-006-008>012-016>019-172000-
Western Franklin-Western Chittenden-Lamoille-Washington-
Western Addison-Orange-Western Rutland-Windsor-Eastern Franklin-
Eastern Chittenden-Eastern Addison-Eastern Rutland-
352 PM EDT Sat Oct 16 2021

...SEVERE THUNDERSTORM WATCH 529 IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Vermont, northwest
Vermont and southern Vermont.

.DAY ONE...This afternoon and tonight.

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

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Oct 16, 2:15 PM EDT, 1 hour 40 minutes before
Special Weather Statement
National Weather Service Burlington VT
215 PM EDT Sat Oct 16 2021

NYZ034-035-VTZ005-009-011-161900-
Western Essex NY-Eastern Essex NY-Western Rutland VT-
Western Chittenden VT-Western Addison VT-
215 PM EDT Sat Oct 16 2021

...Strong thunderstorms will impact portions of eastern Essex,
western Addison, west central Rutland and southwestern Chittenden
Counties through 300 PM EDT...

At 214 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Au Sable Forks to near Keene Valley to
near Minerva. Movement was east at 30 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Vergennes, South Burlington, Middlebury, Essex, Moriah, Willsboro,
Crown Point, Westport, Elizabethtown, Cornwall, Weybridge, Schroon
Lake, Orwell, Port Henry, Addison, Shoreham, Shelburne, Ferrisburg,
Charlotte and Waltham.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
northern New York...and central, southern and northwestern Vermont.

&&

LAT...LON 4358 7343 4362 7342 4364 7343 4377 7335
      4381 7338 4375 7400 4418 7378 4440 7371
      4442 7315 4402 7318 4358 7341
TIME...MOT...LOC 1814Z 291DEG 27KT 4442 7360 4416 7369 4375 7391

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Haynes
Local storm report, Oct 16, 3:00 PM EDT, 55 minutes before
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Local storm report, Oct 16, 3:06 PM EDT, 49 minutes before
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Special weather statement, Oct 16, 3:08 PM EDT, 47 minutes before
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Special weather statement, Oct 16, 3:43 PM EDT, 12 minutes before
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Special weather statement, Oct 16, 3:55 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 16, 2:21 PM EDTSevere Thunderstorm WarningBTVFranklin, Grand Isle39 min
Oct 16, 2:40 PM EDTSevere Thunderstorm WarningBTVAddison, Chittenden, Franklin, Grand Isle, Lamoille, Orange and 3 more65 min
Oct 16, 2:55 PM EDTSevere Thunderstorm WarningBTVChittenden, Franklin, Grand Isle, Lamoille, Orleans65 min
Oct 16, 3:08 PM EDTSpecial Weather StatementBTVRutland52 min
Oct 16, 3:43 PM EDTSpecial Weather StatementBTVCaledonia, Orange, Washington62 min
Oct 16, 4:47 PM EDTSpecial Weather StatementBTVCaledonia, Essex, Orange, Windsor58 min
Oct 16, 5:24 PM EDTSpecial Weather StatementBTVWindsor51 min
Oct 16, 9:32 AM EDTSpecial Weather StatementBTVFranklin28 min
Oct 16, 12:25 PM EDTSpecial Weather StatementBTVFranklin35 min
Oct 16, 12:58 PM EDTSpecial Weather StatementBTVFranklin47 min
Oct 16, 1:32 PM EDTSevere Thunderstorm WarningBTVClinton, Essex, Franklin43 min
Oct 16, 2:13 PM EDTSpecial Weather StatementBTVClinton32 min
Oct 16, 2:15 PM EDTSpecial Weather StatementBTVEssex45 min

Nearby

Special Weather Statements in Vermont, 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.