Alert archive / Vermont / Mesoscale Discussions in 2007
Mesoscale Discussion 2238
The Storm Prediction Center issued this mesoscale discussion at Dec 16, 2007, 8:29 AM EST for 5 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 16, 2007, 8:29 AM EST (13:29 UTC)
- Expired
- Dec 16, 2007, 1:30 PM EST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 45 counties
Franklin County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA, Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Kennebec County, ME, Lincoln County, ME, Oxford County, ME, Sagadahoc County, ME, Somerset County, ME, Waldo County, ME, York County, ME, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Coos County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH, Clinton County, NY, Essex County, NY, Franklin County, NY, Hamilton County, NY, St. Lawrence 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 Portland,ME radar (KGYX), 85 km from the middle of the area, began a volume at 13:32 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
Gray, ME (KGYX), launched 12:00Z, 1.5 hours before the alert went out and 85 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 547 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- 286 m²/s²
- 0-3 km storm-relative helicity
- 680 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 16, 1:14 PM EST | Mesoscale Discussion | SPC | Aroostook | 6 hr |
| Dec 16, 2:21 AM EST | Mesoscale Discussion | SPC | Berkshire, Franklin, Hampden, Hampshire | 5 hr |
| Dec 15, 7:43 PM EST | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Steuben | 6 hr |
Nearby
Mesoscale Discussions in Vermont, 2007Mesoscale Discussions in Maine, 2007Mesoscale Discussions in New Hampshire, 2007Every mesoscale discussion in 2007
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.