Alert archive / Vermont / Special Weather Statements in 2021
Special Weather Statement, NWS Burlington, VT
NWS Burlington, VT issued this special weather statement at Aug 11, 2021, 10:15 PM EDT for Addison County, Washington County, Vermont. It was in force for 60 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 11, 2021, 10:15 PM EDT (02:15 UTC)
- Expired
- Aug 11, 2021, 11:15 PM EDT
- In force
- 60 min
- Issued by
- NWS Burlington, VT
- Hail
- 0.00 in
- Wind
- 30
Counties Addison County, VT, Washington County, VT
The radar
The Burlington radar (KCXX), 48 km from the middle of the area, began a volume at 02:16 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 00:00Z, 2.3 hours before the alert went out and 206 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.
- Mixed-layer CAPE
- 2320 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1182 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 5.8
The text
As transmitted.
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</html>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 11, 7:50 PM EDT, 2 hours 25 minutes earlier.
Area forecast discussion, Aug 11, 7:50 PM EDT, 2 hours 25 minutes before
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</html>Hazardous weather outlook, Aug 11, 3:25 PM EDT, 6 hours 50 minutes before
Hazardous Weather Outlook National Weather Service Burlington VT 325 PM EDT Wed Aug 11 2021 NYZ026>028-035-087-VTZ001-002-005-009-011-012-121930- Northern St. Lawrence-Northern Franklin-Eastern Clinton- Eastern Essex-Southwestern St. Lawrence-Grand Isle-Western Franklin- Western Chittenden-Western Addison-Western Rutland-Windsor- 325 PM EDT Wed Aug 11 2021 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THURSDAY... This Hazardous Weather Outlook is for northern New York, 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. Heat Advisory. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. Hot and humid weather will continue through Friday, with heat index values in the 90s. Thunderstorms are likely on Thursday and Friday, some of which may be strong to severe, especially on Thursday. The main threats will be heavy rainfall and gusty winds. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. VTZ003-004-006>008-010-016>019-121930- Orleans-Essex-Lamoille-Caledonia-Washington-Orange-Eastern Franklin- Eastern Chittenden-Eastern Addison-Eastern Rutland- 325 PM EDT Wed Aug 11 2021 ...HEAT ADVISORY IN EFFECT FROM NOON TO 8 PM EDT THURSDAY... This Hazardous Weather Outlook is for central Vermont, northeast Vermont, northwest Vermont and southern Vermont. .DAY ONE...This afternoon and tonight. Today will be warm and humid with highs in mid 80s to around 90. Heat index values will be in the upper 80s to lower 90s this afternoon. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. Hot and humid weather will continue through Friday, with heat index values in the 90s. Thunderstorms are likely on Thursday and Friday, some of which may be strong to severe, especially on Thursday. The main threats will be heavy rainfall and gusty winds. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NYZ029>031-034-121930- Southeastern St. Lawrence-Southern Franklin-Western Clinton- Western Essex- 325 PM EDT Wed Aug 11 2021 This Hazardous Weather Outlook is for northern New York. .DAY ONE...This afternoon and tonight. Today will be warm and humid with highs in mid 80s to around 90. Heat index values will be in the upper 80s to lower 90s this afternoon. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Hot and humid weather will continue through Friday, with heat index values in the 90s. Thunderstorms are likely on Thursday and Friday, some of which may be strong to severe, especially on Thursday. The main threats will be heavy rainfall and gusty winds. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Aug 11, 4:30 PM EDT, 5 hours 45 minutes before
Special Weather Statement
National Weather Service Burlington VT
430 PM EDT Wed Aug 11 2021
NYZ034-035-VTZ009-018-112100-
Western Essex NY-Eastern Essex NY-Western Addison VT-
Eastern Addison VT-
430 PM EDT Wed Aug 11 2021
...A strong thunderstorm will impact portions of southeastern Essex
and southwestern Addison Counties through 500 PM EDT...
At 429 PM EDT, Doppler radar was tracking a strong thunderstorm over
Crown Point, moving east at 30 mph.
HAZARD...Winds in excess of 30 mph and heavy rainfall.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Middlebury, Moriah, Crown Point, Cornwall, Weybridge, Salisbury,
Bristol, New Haven, Port Henry, Addison, Shoreham, D A R State Park,
Crown Point Center, Bridport, Ripton, Whiting, Leicester, Goshen,
Waltham and Lincoln.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
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 4387 7348 4405 7353 4415 7303 4388 7297
TIME...MOT...LOC 2029Z 261DEG 24KT 4398 7341
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH
LahiffSpecial weather statement, Aug 11, 5:03 PM EDT, 5 hours 12 minutes before
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</html>Special weather statement, Aug 11, 5:35 PM EDT, 4 hours 40 minutes before
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</html>Local storm report, Aug 11, 5:50 PM EDT, 4 hours 25 minutes before
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</html>Local storm report, Aug 11, 5:52 PM EDT, 4 hours 23 minutes before
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</html>Special weather statement, Aug 11, 6:11 PM EDT, 4 hours 4 minutes before
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</html>The office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 11:09 PM EDT | Special Weather Statement | BTV | Caledonia, Essex, Orange | 51 min |
| Aug 12, 2:22 PM EDT | Special Weather Statement | BTV | Addison | 38 min |
| Aug 12, 3:32 PM EDT | Special Weather Statement | BTV | Orange | 43 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.