Alert archive / Vermont / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 67, NWS Burlington, VT

October 10, 20204 counties in Vermont; Essex County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Oct 10, 2020, 5:23 PM EDT for 4 counties in Vermont; Essex County, New York. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 10, 2020, 5:23 PM EDT (21:23 UTC)
Expired
Oct 10, 2020, 6:30 PM EDT
In force
67 min
Issued by
NWS Burlington, VT
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Essex County, NY, Addison County, VT, Chittenden County, VT, Orange County, VT, Washington County, VT

The radar

The Burlington radar (KCXX), 39 km from the middle of the area, began a volume at 21:25 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 10, 2:13 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 9.4 hours before the alert went out and 179 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.

Skew-T log-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2020-10-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2020-10-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 282 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1707 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
282 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 10, 2:13 PM EDTSevere Thunderstorm WarningBTVFranklin, Grand Isle62 min
Oct 10, 2:26 PM EDTSevere Thunderstorm WarningBTVChittenden, Franklin, Grand Isle, Lamoille64 min
Oct 10, 3:02 PM EDTSpecial Weather StatementBTVFranklin43 min
Oct 10, 3:48 PM EDTSpecial Weather StatementBTVCaledonia, Essex, Franklin, Lamoille, Orleans42 min
Oct 10, 3:56 PM EDTSpecial Weather StatementBTVFranklin, Grand Isle49 min
Oct 10, 4:05 PM EDTSevere Thunderstorm WarningBTVEssex40 min
Oct 10, 4:50 PM EDTSpecial Weather StatementBTVLamoille40 min
Oct 10, 5:21 PM EDTSevere Thunderstorm WarningBTVChittenden, Lamoille, Washington54 min
Oct 10, 5:36 PM EDTSevere Thunderstorm WarningBTVCaledonia, Essex, Orleans24 min
Oct 10, 6:08 PM EDTSpecial Weather StatementBTVCaledonia67 min
Oct 10, 6:24 PM EDTSpecial Weather StatementBTVOrleans51 min
Oct 10, 6:27 PM EDTSevere Thunderstorm WarningBTVCaledonia, Essex, Orange, Washington48 min
Oct 10, 6:43 PM EDTSevere Thunderstorm WarningBTVCaledonia, Essex32 min
Oct 10, 7:12 PM EDTSpecial Weather StatementBTVOrange, Washington63 min
Oct 10, 7:16 PM EDTSpecial Weather StatementBTVEssex14 min
Oct 10, 7:27 PM EDTSpecial Weather StatementBTVRutland, Windsor33 min
Oct 10, 7:40 PM EDTSpecial Weather StatementBTVFranklin, Lamoille, Orleans50 min
Oct 10, 1:31 PM EDTSpecial Weather StatementBTVFranklin44 min
Oct 10, 1:38 PM EDTSpecial Weather StatementBTVFranklin52 min
Oct 10, 2:33 PM EDTSpecial Weather StatementBTVFranklin42 min
Oct 10, 2:39 PM EDTSpecial Weather StatementBTVFranklin51 min
Oct 10, 3:11 PM EDTSpecial Weather StatementBTVFranklin49 min
Oct 10, 4:06 PM EDTSpecial Weather StatementBTVEssex, Franklin, St. Lawrence54 min
Oct 10, 4:59 PM EDTSpecial Weather StatementBTVEssex46 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2020Severe Thunderstorm Warnings in New York, 2020Every severe thunderstorm warning in 2020

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.