Alert archive / New York / Mesoscale Discussions in 2017
Mesoscale Discussion 1160
The Storm Prediction Center issued this mesoscale discussion at Jun 27, 2017, 12:00 PM EDT for 6 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 27, 2017, 12:00 PM EDT (16:00 UTC)
- Expired
- Jun 27, 2017, 2:00 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 59 counties
Barnstable County, MA, Berkshire County, MA, Bristol County, MA, Dukes County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Nantucket County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Androscoggin County, ME, Cumberland County, ME, Kennebec County, ME, Knox County, ME, Lincoln County, ME, Oxford County, ME, Sagadahoc County, ME, Waldo County, ME, York County, ME, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH, Albany County, NY, Columbia County, NY, Dutchess County, NY, Greene County, NY, Montgomery County, NY, Nassau County, NY, Orange County, NY, Putnam County, NY, Rensselaer County, NY, Rockland County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Suffolk County, NY, Ulster County, NY, Washington County, NY, Westchester County, NY, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI, Bennington County, VT, Orange County, VT, Rutland County, VT, Windham County, VT, Windsor County, VT
The radar
The Boston radar (KBOX), 59 km from the middle of the area, began a volume at 16:03 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
Chatham, MA (KCHH), launched 12:00Z, 4.0 hours before the alert went out and 143 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
- 25 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1383 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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Mesoscale Discussions in New York, 2017Mesoscale Discussions in Massachusetts, 2017Mesoscale Discussions in Connecticut, 2017Every mesoscale discussion in 2017
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.