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, 8:21 AM EST for Franklin County, Grand Isle County, Vermont; Clinton County, Franklin County, New York. It was in force for 39 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, 8:21 AM EST (13:21 UTC)
- Expired
- Jan 20, 2021, 9:00 AM EST
- In force
- 39 min
- Issued by
- NWS Burlington, VT
Counties Clinton County, NY, Franklin County, NY, Franklin County, VT, Grand Isle County, VT
The radar
The Burlington radar (KCXX), 29 km from the middle of the area, began a volume at 13:23 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, 1.4 hours before the alert went out and 233 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.
242
WWUS81 KBTV 201321
SPSBTV
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
$$
ClayThe office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 20, 8:59 AM EST | Special Weather Statement | BTV | Chittenden, Franklin, Grand Isle, Lamoille | 46 min |
| Jan 20, 9:57 AM EST | Special Weather Statement | BTV | Chittenden, Lamoille, Washington | 63 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, 2021Special Weather Statements in New York, 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.