Alert archive / New York / Mesoscale Discussions in 2011
Mesoscale Discussion 140
The Storm Prediction Center issued this mesoscale discussion at Feb 25, 2011, 4:28 AM EST for 6 counties in New Hampshire; 23 counties in New York; 8 counties in Vermont. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 25, 2011, 4:28 AM EST (09:28 UTC)
- Expired
- Feb 25, 2011, 10:30 AM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 37 counties
Belknap County, NH, Carroll County, NH, Cheshire County, NH, Grafton County, NH, Merrimack County, NH, Sullivan County, NH, Albany County, NY, Broome County, NY, Cayuga County, NY, Chenango County, NY, Cortland County, NY, Essex County, NY, Fulton County, NY, Hamilton County, NY, Herkimer County, NY, Lewis County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Tioga County, NY, Tompkins County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Bennington County, VT, Chittenden County, VT, Orange County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT
The radar
The Albany radar (KENX), 74 km from the middle of the area, began a volume at 09:27 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, 9.5 hours before the alert went out and 62 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
- 1642 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 285 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 |
|---|---|---|---|---|
| Feb 25, 12:36 PM EST | Mesoscale Discussion | SPC | Belknap, Carroll, Grafton, Merrimack, Sullivan | 4 hr |
| Feb 25, 2:46 AM EST | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Cayuga, Chautauqua, Chemung, Cortland and 15 more | 4 hr |
Nearby
Mesoscale Discussions in New York, 2011Mesoscale Discussions in Vermont, 2011Mesoscale Discussions in New Hampshire, 2011Every mesoscale discussion in 2011
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.