Alert archive / Vermont / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 704
The Storm Prediction Center issued this severe thunderstorm watch at Aug 31, 2001, 3:15 PM EDT for 6 counties in New York; 7 counties in Vermont. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 31, 2001, 3:15 PM EDT (19:15 UTC)
- Expired
- Aug 31, 2001, 9:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Clinton County, NY, Essex County, NY, Franklin County, NY, Hamilton County, NY, Herkimer County, NY, Warren County, NY, Addison County, VT, Chittenden County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orleans County, VT, Washington County, VT
The radar
The Burlington radar (KCXX), 96 km from the middle of the area, began a volume at 19:17 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.
Warnings issued inside it
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 5:12 PM EDT | Severe Thunderstorm Warning | ALY | Warren | 63 min |
| Aug 31, 5:20 PM EDT | Severe Thunderstorm Warning | BTV | Lamoille | 55 min |
| Aug 31, 6:06 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton, Herkimer | 54 min |
| Aug 31, 8:59 PM EDT | Severe Thunderstorm Warning | BTV | Addison, Washington | 61 min |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 7.3 hours before the alert went out and 149 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
- 1164 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 733 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 155 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | Albany, Broome, Chemung, Chenango, Cortland, Delaware and 15 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Vermont, 2001Severe Thunderstorm Watches in New York, 2001Every severe thunderstorm watch in 2001
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.