Alert archive / Vermont / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 49, NWS Burlington, VT
NWS Burlington, VT issued this severe thunderstorm warning at Oct 16, 2021, 2:55 PM EDT for 5 counties in Vermont. It was in force for 65 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Oct 16, 2021, 2:55 PM EDT (18:55 UTC)
- Expired
- Oct 16, 2021, 4:00 PM EDT
- In force
- 65 min
- Issued by
- NWS Burlington, VT
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Chittenden County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orleans County, VT
The radar
The Burlington radar (KCXX), 48 km from the middle of the area, began a volume at 18:58 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 16, 2:55 PM EDT | TSTM WND DMG | 1 Nnw Swanton Junction, VT | TREE DOWN ON BEEBEE ROAD. |
| Oct 16, 3:01 PM EDT | TSTM WND DMG | 1 Ese St. Albans, VT | TREES AND POWERLINES DOWN ON FAIRFIELD RD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 16, 12:35 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Gray, ME (KGYX), launched 12:00Z, 6.9 hours before the alert went out and 226 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 466 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
851
WUUS51 KBTV 161855
SVRBTV
VTC007-011-013-015-019-162000-
/O.NEW.KBTV.SV.W.0049.211016T1855Z-211016T2000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Burlington VT
255 PM EDT Sat Oct 16 2021
The National Weather Service in Burlington has issued a
* Severe Thunderstorm Warning for...
Northern Lamoille County in northwestern Vermont...
Western Orleans County in northeastern Vermont...
Northeastern Grand Isle County in northwestern Vermont...
Northeastern Chittenden County in northwestern Vermont...
Franklin County in northwestern Vermont...
* Until 400 PM EDT.
* At 255 PM EDT, severe thunderstorms were located along a line
extending from Province Point to St. Albans City to West Milton,
moving northeast at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
* Locations impacted include...
Enosburg Falls, Franklin, Johnson Village, Jay, Jay In Franklin
County, Cambridge, Montgomery Center, Hyde Park, Montgomery, St.
Albans City, Fairfax, Troy, Sheldon, Belvidere Center, Georgia,
Enosburg, Swanton, Waterville, St. Albans Town and Johnson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4500 7229 4460 7243 4462 7324 4479 7316
4501 7323
TIME...MOT...LOC 1855Z 225DEG 50KT 4502 7318 4483 7311 4465 7318
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Haynes2 follow-up statements
650 WWUS51 KBTV 161921 SVSBTV Severe Weather Statement National Weather Service Burlington VT 321 PM EDT Sat Oct 16 2021 VTC013-161930- /O.CAN.KBTV.SV.W.0049.000000T0000Z-211016T2000Z/ Grand Isle VT- 321 PM EDT Sat Oct 16 2021 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GRAND ISLE COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 700 PM EDT for northwestern Vermont. LAT...LON 4500 7229 4460 7243 4463 7296 4501 7293 TIME...MOT...LOC 1920Z 225DEG 50KT 4524 7286 4505 7279 4487 7287 $$ VTC007-011-015-019-162000- /O.CON.KBTV.SV.W.0049.000000T0000Z-211016T2000Z/ Lamoille VT-Orleans VT-Chittenden VT-Franklin VT- 321 PM EDT Sat Oct 16 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT FOR NORTHERN LAMOILLE...WESTERN ORLEANS...NORTHEASTERN CHITTENDEN AND EASTERN FRANKLIN COUNTIES... At 320 PM EDT, severe thunderstorms were located along a line extending from 16 miles north of Morses Line to near East Franklin to East Sheldon, moving northeast at 60 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to trees and powerlines. Locations impacted include... Enosburg Falls, Franklin, Johnson Village, Jay, Jay In Franklin County, Eden, Cambridge, Bakersfield, Cambridge Village, Berkshire, Montgomery Center, Jeffersonville Village, Hyde Park, Montgomery, Troy, Sheldon, Belvidere Center, Lake Carmi State Park, Enosburg and Belvidere. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4500 7229 4460 7243 4463 7296 4501 7293 TIME...MOT...LOC 1920Z 225DEG 50KT 4524 7286 4505 7279 4487 7287 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Haynes
792
WWUS51 KBTV 161956
SVSBTV
Severe Weather Statement
National Weather Service Burlington VT
356 PM EDT Sat Oct 16 2021
VTC007-011-015-019-162006-
/O.EXP.KBTV.SV.W.0049.000000T0000Z-211016T2000Z/
Lamoille VT-Orleans VT-Chittenden VT-Franklin VT-
356 PM EDT Sat Oct 16 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LAMOILLE...WESTERN
ORLEANS...NORTHEASTERN CHITTENDEN AND EASTERN FRANKLIN COUNTIES WILL
EXPIRE AT 400 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
northwestern Vermont.
LAT...LON 4500 7229 4460 7243 4463 7296 4501 7293
TIME...MOT...LOC 1956Z 225DEG 50KT 4559 7237 4540 7230 4522 7238
$$
HaynesThe office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 16, 2:21 PM EDT | Severe Thunderstorm Warning | BTV | Franklin, Grand Isle | 39 min |
| Oct 16, 2:40 PM EDT | Severe Thunderstorm Warning | BTV | Addison, Chittenden, Franklin, Grand Isle, Lamoille, Orange and 3 more | 65 min |
| Oct 16, 3:08 PM EDT | Special Weather Statement | BTV | Rutland | 52 min |
| Oct 16, 3:43 PM EDT | Special Weather Statement | BTV | Caledonia, Orange, Washington | 62 min |
| Oct 16, 3:55 PM EDT | Special Weather Statement | BTV | Orleans | 50 min |
| Oct 16, 4:47 PM EDT | Special Weather Statement | BTV | Caledonia, Essex, Orange, Windsor | 58 min |
| Oct 16, 5:24 PM EDT | Special Weather Statement | BTV | Windsor | 51 min |
Nearby
Severe Thunderstorm Warnings in Vermont, 2021Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.