Alert archive / Vermont / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 675
The Storm Prediction Center issued this severe thunderstorm watch at Jul 31, 2004, 1:35 PM EDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 31, 2004, 1:35 PM EDT (17:35 UTC)
- Expired
- Jul 31, 2004, 8:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Berkshire County, MA, Coos County, NH, Grafton County, NH, Sullivan County, NH, Albany County, NY, Columbia County, NY, Delaware County, NY, Essex County, NY, Fulton County, NY, Greene County, NY, Montgomery County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT
The radar
The Albany radar (KENX), 83 km from the middle of the area, began a volume at 17:37 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
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 3:27 PM EDT | Severe Thunderstorm Warning | BTV | Essex | 63 min |
| Jul 31, 4:10 PM EDT | Severe Thunderstorm Warning | BTV | Rutland | 65 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 5.6 hours before the alert went out and 66 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
- 151 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 716 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 4:06 PM EDT | Mesoscale Discussion | SPC | Berkshire | 84 min |
| Jul 31, 12:32 PM EDT | Mesoscale Discussion | SPC | Albany, Clinton, Columbia, Delaware, Essex, Fulton and 11 more | 118 min |
Nearby
Severe Thunderstorm Watches in Vermont, 2004Severe Thunderstorm Watches in New York, 2004Severe Thunderstorm Watches in New Hampshire, 2004Every severe thunderstorm watch in 2004
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.