Alert archive / Vermont / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 39, NWS Burlington, VT
NWS Burlington, VT issued this severe thunderstorm warning at Sep 6, 2021, 1:36 PM EDT for 6 counties in Vermont. It was in force for 24 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
- Sep 6, 2021, 1:36 PM EDT (17:36 UTC)
- Expired
- Sep 6, 2021, 2:00 PM EDT
- In force
- 24 min
- Issued by
- NWS Burlington, VT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Addison County, VT, Caledonia County, VT, Chittenden County, VT, Orange County, VT, Washington County, VT, Windsor County, VT
The radar
The Burlington radar (KCXX), 59 km from the middle of the area, began a volume at 17:40 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, 5.6 hours before the alert went out and 172 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
- 36 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 791 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
011
WUUS51 KBTV 061736
SVRBTV
VTC001-005-007-017-023-027-061800-
/O.NEW.KBTV.SV.W.0039.210906T1736Z-210906T1800Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Burlington VT
136 PM EDT Mon Sep 6 2021
The National Weather Service in Burlington has issued a
* Severe Thunderstorm Warning for...
Southwestern Caledonia County in northeastern Vermont...
Western Orange County in central Vermont...
East central Addison County in central Vermont...
Southeastern Chittenden County in northwestern Vermont...
North central Windsor County in southern Vermont...
Southern Washington County in central Vermont...
* Until 200 PM EDT.
* At 136 PM EDT, a severe thunderstorm was located over East Warren,
moving east at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor hail damage to vehicles is possible. Expect wind
damage to trees and powerlines.
* Locations impacted include...
Barre, Middlebury, Montpelier, Braintree Hill, Plainfield, Orange,
Chelsea, Websterville, Lincoln, Randolph, Waitsfield, Berlin,
Fayston, Granville, Barre Town, Northfield Village, Tunbridge,
Hancock, Washington and Warren.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4393 7317 4423 7290 4427 7232 4386 7250
TIME...MOT...LOC 1736Z 266DEG 40KT 4410 7282
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RSD1 follow-up statement
885
WWUS51 KBTV 061757
SVSBTV
Severe Weather Statement
National Weather Service Burlington VT
157 PM EDT Mon Sep 6 2021
VTC001-005-007-017-023-027-061806-
/O.EXP.KBTV.SV.W.0039.000000T0000Z-210906T1800Z/
Caledonia VT-Orange VT-Addison VT-Chittenden VT-Windsor VT-
Washington VT-
157 PM EDT Mon Sep 6 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CALEDONIA...
WESTERN ORANGE...EAST CENTRAL ADDISON...SOUTHEASTERN CHITTENDEN...
NORTH CENTRAL WINDSOR AND SOUTHERN WASHINGTON COUNTIES WILL EXPIRE AT
200 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However,
additional showers and thunderstorms will continue across the area
through this afternoon. Gusty winds and heavy rain will be possible
with this additional activity.
LAT...LON 4393 7317 4423 7290 4427 7232 4386 7250
TIME...MOT...LOC 1756Z 266DEG 40KT 4411 7255
$$
HastingsThe office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 11:56 AM EDT | Special Weather Statement | BTV | Grand Isle | 34 min |
| Sep 6, 12:04 PM EDT | Special Weather Statement | BTV | Addison | 26 min |
| Sep 6, 12:17 PM EDT | Special Weather Statement | BTV | Grand Isle | 28 min |
| Sep 6, 12:26 PM EDT | Special Weather Statement | BTV | Addison | 34 min |
| Sep 6, 12:33 PM EDT | Special Weather Statement | BTV | Franklin | 27 min |
| Sep 6, 12:41 PM EDT | Special Weather Statement | BTV | Chittenden | 34 min |
| Sep 6, 12:44 PM EDT | Special Weather Statement | BTV | Grand Isle | 31 min |
| Sep 6, 12:58 PM EDT | Special Weather Statement | BTV | Windsor | 32 min |
| Sep 6, 1:01 PM EDT | Special Weather Statement | BTV | Franklin | 29 min |
| Sep 6, 1:05 PM EDT | Special Weather Statement | BTV | Washington | 25 min |
| Sep 6, 1:14 PM EDT | Special Weather Statement | BTV | Addison | 31 min |
| Sep 6, 1:17 PM EDT | Special Weather Statement | BTV | Lamoille | 28 min |
| Sep 6, 1:48 PM EDT | Special Weather Statement | BTV | Rutland | 27 min |
| Sep 6, 1:51 PM EDT | Special Weather Statement | BTV | Essex | 24 min |
| Sep 6, 2:06 PM EDT | Special Weather Statement | BTV | Orange | 39 min |
| Sep 6, 2:20 PM EDT | Special Weather Statement | BTV | Orange, Windsor | 40 min |
| Sep 6, 4:38 PM EDT | Special Weather Statement | BTV | Chittenden, Franklin | 37 min |
| Sep 6, 5:13 PM EDT | Special Weather Statement | BTV | Chittenden, Lamoille | 32 min |
| Sep 6, 5:43 PM EDT | Special Weather Statement | BTV | Caledonia, Washington | 32 min |
| Sep 6, 6:14 PM EDT | Special Weather Statement | BTV | Caledonia | 46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.