Alert archive / Vermont / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 65, NWS Burlington, VT

October 10, 2020Essex County, Vermont

NWS Burlington, VT issued this severe thunderstorm warning at Oct 10, 2020, 4:05 PM EDT for Essex County, Vermont. It was in force for 40 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, 4:05 PM EDT (20:05 UTC)
Expired
Oct 10, 2020, 4:45 PM EDT
In force
40 min
Issued by
NWS Burlington, VT
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Essex County, VT

The radar

The Burlington radar (KCXX), 116 km from the middle of the area, began a volume at 20:08 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

Gray, ME (KGYX), launched 12:00Z, 8.1 hours before the alert went out and 150 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, Gray, ME 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, Gray, ME at 12:00Z on 2020-10-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 286 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
1672 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
286 m²/s²
0-3 km storm-relative helicity
336 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, 4:50 PM EDTSpecial Weather StatementBTVLamoille40 min
Oct 10, 5:21 PM EDTSevere Thunderstorm WarningBTVChittenden, Lamoille, Washington54 min
Oct 10, 5:23 PM EDTSevere Thunderstorm WarningBTVAddison, Chittenden, Orange, Washington67 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, 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.