Alert archive / New York / Mesoscale Discussions in 2011

Mesoscale Discussion 1048

June 1, 20116 states

The Storm Prediction Center issued this mesoscale discussion at Jun 1, 2011, 12:26 PM EDT for 6 states. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued: Jun 1, 2011, 12:26 PM EDT (16:26 UTC)
Expired: Jun 1, 2011, 1:30 PM EDT
In force: 64 min
Issued by: the Storm Prediction Center

All 53 counties

Berkshire County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA, Oxford 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, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Albany County, NY, Bronx County, NY, Columbia County, NY, Dutchess County, NY, Greene County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Rensselaer County, NY, Richmond County, NY, Rockland County, NY, Ulster County, NY, Washington County, NY, Westchester County, NY, Bennington County, VT, Caledonia County, VT, Essex County, VT, Orange County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT

The radar

The Albany radar (KENX), 113 km from the middle of the area, began a volume at 16:26 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 411Jun 1, 1:00 PM EDT

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 4.4 hours before the alert went out and 97 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2410 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 836 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 159 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 1, 10:02 AM EDT	Severe Thunderstorm Watch	SPC	Northwest Hills Planning Region	7 hr
Jun 1, 12:58 PM EDT	Tornado Watch	SPC	Greater Bridgeport Planning Region, Capitol Planning Region, Naugatuck Valley Planning Region, Northeastern Connecticut Planning Region	7 hr
Jun 1, 4:17 PM EDT	Mesoscale Discussion	SPC		88 min
Jun 1, 7:09 PM EDT	Mesoscale Discussion	SPC		96 min
Jun 1, 7:40 PM EDT	Tornado Watch	SPC	Capitol Planning Region, Northeastern Connecticut Planning Region	2 hr
Jun 1, 2:19 PM EDT	Mesoscale Discussion	SPC	Aroostook, Franklin, Kennebec, Penobscot, Piscataquis, Somerset and 1 more	86 min
Jun 1, 2:37 PM EDT	Tornado Watch	SPC	Aroostook, Franklin, Kennebec, Knox, Lincoln, Penobscot and 3 more	5 hr
Jun 1, 5:47 PM EDT	Mesoscale Discussion	SPC	Bristol, Dukes, Plymouth	58 min
Jun 1, 2:24 PM EDT	Severe Thunderstorm Watch	SPC	Atlantic, Cape May, Cumberland, Salem	7 hr
Jun 1, 6:27 PM EDT	Mesoscale Discussion	SPC	Atlantic, Cape May, Cumberland, Salem	93 min
Jun 1, 5:58 AM EDT	Mesoscale Discussion	SPC	Albany, Broome, Chenango, Columbia, Delaware, Essex and 12 more	2 hr
Jun 1, 9:38 AM EDT	Mesoscale Discussion	SPC	Allegany, Broome, Cayuga, Chemung, Chenango, Clinton and 21 more	37 min

Nearby

Mesoscale Discussions in New York, 2011 Mesoscale Discussions in New Jersey, 2011 Mesoscale Discussions in New Hampshire, 2011 Every 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.