Alert archive / New York / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 30, NWS Burlington, VT
NWS Burlington, VT issued this severe thunderstorm warning at Jun 28, 2020, 8:47 PM EDT for St. Lawrence County, New York. It was in force for 58 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
- Jun 28, 2020, 8:47 PM EDT (00:47 UTC)
- Expired
- Jun 28, 2020, 9:45 PM EDT
- In force
- 58 min
- Issued by
- NWS Burlington, VT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County St. Lawrence County, NY
The radar
The Ft Drum radar (KTYX), 94 km from the middle of the area, began a volume at 00:48 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 00:00Z, 0.8 hours before the alert went out and 226 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
- 535 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 936 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 28, 7:30 PM EDT, 1 hour 17 minutes earlier.
Area forecast discussion, Jun 28, 7:30 PM EDT, 1 hour 17 minutes before
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</html>Hazardous weather outlook, Jun 28, 4:25 AM EDT, 16 hours 22 minutes before
Hazardous Weather Outlook National Weather Service Burlington VT 425 AM EDT Sun Jun 28 2020 NYZ026>031-087-VTZ001>007-016-017-290830- Northern St. Lawrence-Northern Franklin-Eastern Clinton- Southeastern St. Lawrence-Southern Franklin-Western Clinton- Southwestern St. Lawrence-Grand Isle-Western Franklin-Orleans-Essex- Western Chittenden-Lamoille-Caledonia-Eastern Franklin- Eastern Chittenden- 425 AM EDT Sun Jun 28 2020 This Hazardous Weather Outlook is for northern New York, northeast Vermont and northwest Vermont. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. NYZ034-035-VTZ008>012-018-019-290830- Western Essex-Eastern Essex-Washington-Western Addison-Orange- Western Rutland-Windsor-Eastern Addison-Eastern Rutland- 425 AM EDT Sun Jun 28 2020 This Hazardous Weather Outlook is for northern New York, central Vermont and southern Vermont. .DAY ONE...Today and tonight. Scattered showers and thunderstorms are expected to develop across portions of central and south central Vermont and southern Essex County in New York this afternoon. A few strong storms are possible, mainly between 2 and 6 PM, with the potential for gusty winds, small hail, and dangerous cloud to ground lightning. Convective activity will decrease in coverage and intensity during the evening hours. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Jun 28, 3:04 PM EDT, 5 hours 43 minutes before
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</html>The office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 1:26 PM EDT | Special Weather Statement | BTV | Windsor | 49 min |
| Jun 28, 8:22 PM EDT | Special Weather Statement | BTV | St. Lawrence | 53 min |
Nearby
Severe 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.