Alert archive / Vermont / Special Weather Statements in 2021
Special Weather Statement, NWS Burlington, VT
NWS Burlington, VT issued this special weather statement at Jan 20, 2021, 9:57 AM EST for Chittenden County, Lamoille County, Washington County, Vermont. It was in force for 63 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
- Jan 20, 2021, 9:57 AM EST (14:57 UTC)
- Expired
- Jan 20, 2021, 11:00 AM EST
- In force
- 63 min
- Issued by
- NWS Burlington, VT
Counties Chittenden County, VT, Lamoille County, VT, Washington County, VT
The radar
The Burlington radar (KCXX), 28 km from the middle of the area, began a volume at 14:59 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, 3.0 hours before the alert went out and 210 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 782 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</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 Jan 20, 9:10 AM EST, 47 minutes earlier.
Area forecast discussion, Jan 20, 9:10 AM EST, 47 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous weather outlook, Jan 20, 3:18 AM EST, 6 hours 39 minutes before
Hazardous Weather Outlook National Weather Service Burlington VT 318 AM EST Wed Jan 20 2021 NYZ026>028-031-034-035-VTZ001>012-016>019-210830- Northern St. Lawrence-Northern Franklin-Eastern Clinton- Western Clinton-Western Essex-Eastern Essex-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- 318 AM EST Wed Jan 20 2021 This Hazardous Weather Outlook is for northern New York, central Vermont, northeast Vermont, northwest Vermont and southern Vermont. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NYZ029-030-087-210830- Southeastern St. Lawrence-Southern Franklin- Southwestern St. Lawrence- 318 AM EST Wed Jan 20 2021 This Hazardous Weather Outlook is for northern New York. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. A weak upper level disturbance will cross north of our forecast area Thursday night into Friday. Most of the area will see light intermittent snowfall with this system, from early Thursday morning through late Friday night. A band of lake effect snow will develop Thursday night into Friday in westerly flow behind this feature. An additional one to four inches of lake effect snow is anticipated, mainly in Southern St Lawrence County. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Jan 20, 8:04 AM EST, 1 hour 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VT
804 AM EST WED JAN 20 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0728 AM SNOW 2 SW MILTON 44.62N 73.15W
01/20/2021 M3.8 INCH CHITTENDEN VT NWS EMPLOYEE
&&
EVENT NUMBER BTV2100291
NEILESLocal storm report, Jan 20, 8:16 AM EST, 1 hour 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VT
816 AM EST WED JAN 20 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0814 AM SNOW 2 SSW EDEN 44.67N 72.56W
01/20/2021 M6.0 INCH LAMOILLE VT TRAINED SPOTTER
FELL OVER THE LAST 2 TO 3 HOURS.
&&
EVENT NUMBER BTV2100292
CLAYSpecial weather statement, Jan 20, 8:21 AM EST, 1 hour 36 minutes before
Special Weather Statement
National Weather Service Burlington VT
821 AM EST Wed Jan 20 2021
NYZ028-030-031-034-035-VTZ001-002-005-006-016-017-201400-
Eastern Clinton-Southern Franklin-Western Essex-Western
Clinton-Eastern Essex-Western Franklin-Grand Isle-Eastern
Chittenden-Western Chittenden-Eastern Franklin-Lamoille-
821 AM EST Wed Jan 20 2021
...AN AREA OF HEAVY SNOW WILL AFFECT CLINTON...EAST CENTRAL
FRANKLIN...NORTHERN ESSEX...WEST CENTRAL LAMOILLE...GRAND ISLE...
NORTHERN CHITTENDEN AND FRANKLIN COUNTIES...
At 820 AM EST...an area of heavy snow was along a line extending from
near Swanton Village to near Beekmantown to near Madawaska...and
moving southeast at 15 mph.
Locations impacted include...
Plattsburgh, Plattsburgh International Airport, Burlington, Lake
Placid, South Burlington, Saranac Lake, Peru, Beekmantown, Schuyler
Falls, Chazy, Saranac, Enosburg Falls, Wilmington, Franklin,
Westford, Colchester, Sheldon, Georgia, Au Sable Forks and Grand
Isle.
This includes Interstate 89 between mile markers 90 and 129.
* visibilities will drop quickly to less than a half mile in this
area of heavy snow.
* sudden and brief snowfall rates of 1 to 2 inches per hour are
possible in this area of heavy snow.
LAT...LON 4501 7258 4454 7298 4423 7402 4459 7437
4486 7353 4501 7321
TIME...MOT...LOC 1320Z 305DEG 15KT 4497 7314 4479 7340 4453 7431
ClayLocal storm report, Jan 20, 8:22 AM EST, 1 hour 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VT
822 AM EST WED JAN 20 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0822 AM SNOW 2 N CALAIS 44.40N 72.43W
01/20/2021 M4.0 INCH WASHINGTON VT TRAINED SPOTTER
&&
EVENT NUMBER BTV2100293
CLAYSpecial weather statement, Jan 20, 8:59 AM EST, 58 minutes before
Special Weather Statement
National Weather Service Burlington VT
859 AM EST Wed Jan 20 2021
NYZ028-030-031-034-035-VTZ001>003-005-006-016-017-201445-
Eastern Clinton-Southern Franklin-Western Essex-Western
Clinton-Eastern Essex-Western Franklin-Grand Isle-Eastern
Chittenden-Western Chittenden-Eastern Franklin-Orleans-Lamoille-
859 AM EST Wed Jan 20 2021
...AN AREA OF HEAVY SNOW WILL AFFECT CLINTON...EAST CENTRAL
FRANKLIN...NORTHERN ESSEX...NORTHERN LAMOILLE...NORTHWESTERN
ORLEANS...GRAND ISLE...CHITTENDEN AND FRANKLIN COUNTIES...
At 856 AM EST...an area of heavy snow was along a line extending from
near Montgomery to Winooski to Lake Placid...and moving southeast at
15 mph.
Locations impacted include...
Essex Junction, Plattsburgh International Airport, Burlington,
Burlington International Airport, Plattsburgh, South Burlington, Lake
Placid, Peru, Beekmantown, Schuyler Falls, Chazy, Saranac, Willsboro,
Enosburg Falls, Wilmington, Montgomery Center, Westford, Sheldon,
Waterville and Grand Isle.
This includes Interstate 89 between mile markers 77 and 129.
* visibilities will drop quickly to less than a mile in this area
of heavy snow.
* sudden and brief snowfall rates of 1 to 2 inches per hour are
possible in this area of heavy snow.
LAT...LON 4501 7255 4480 7223 4439 7301 4429 7406
4467 7432 4487 7357 4501 7322
TIME...MOT...LOC 1356Z 320DEG 11KT 4481 7257 4451 7316 4428 7399
ClaySpecial weather statement, Jan 20, 9:57 AM EST, 0 minutes before
Special Weather Statement
National Weather Service Burlington VT
957 AM EST Wed Jan 20 2021
NYZ035-VTZ002-003-005>010-016>018-201600-
Eastern Essex-Western Franklin-Caledonia-Eastern Chittenden-Western
Chittenden-Washington-Western Addison-Eastern
Franklin-Orleans-Eastern Addison-Lamoille-Orange-
957 AM EST Wed Jan 20 2021
...AN AREA OF HEAVY SNOW WILL AFFECT EASTERN ESSEX...LAMOILLE...WEST
CENTRAL CALEDONIA...NORTHWESTERN ORANGE...SOUTHWESTERN ORLEANS...
NORTHEASTERN ADDISON...CHITTENDEN...WASHINGTON AND SOUTHWESTERN
FRANKLIN COUNTIES...
At 956 AM EST...an area of heavy snow was along a line extending from
Fairfield to Winooski to Willsboro...and moving southeast at 15 mph.
Locations impacted include...
Essex Junction, Barre, Burlington International Airport, Montpelier,
South Burlington, Burlington, Willsboro, Morrisville, Cambridge,
Waterbury Village, Websterville, Westford, Colchester, Essex Junction
Village, Worcester, Middlesex, Georgia, Waterville, Morrisville
Village and Woodbury.
This includes Interstate 89 between mile markers 40 and 116.
* visibilities will drop quickly to less than a half mile in this
area of heavy snow.
* sudden and brief snowfall rates of 1 to 2 inches per hour are
possible in this area of heavy snow.
LAT...LON 4465 7226 4416 7242 4399 7276 4426 7318
4437 7347 4455 7327 4486 7305
TIME...MOT...LOC 1456Z 306DEG 14KT 4481 7293 4452 7320 4436 7339
ClayThe office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 20, 8:21 AM EST | Special Weather Statement | BTV | Franklin, Grand Isle | 39 min |
| Jan 20, 8:59 AM EST | Special Weather Statement | BTV | Chittenden, Franklin, Grand Isle, Lamoille | 46 min |
| Jan 20, 12:42 PM EST | Special Weather Statement | BTV | Chittenden | 48 min |
| Jan 20, 1:35 PM EST | Special Weather Statement | BTV | Addison | 40 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.