Alert archive / Vermont / Mesoscale Discussions in 2011

Mesoscale Discussion 1643

July 17, 2011Coos County, New Hampshire; Clinton County, Franklin County, St. Lawrence County, New York; 8 counties in Vermont

The Storm Prediction Center issued this mesoscale discussion at Jul 17, 2011, 7:12 PM EDT for Coos County, New Hampshire; Clinton County, Franklin County, St. Lawrence County, New York; 8 counties in Vermont. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Jul 17, 2011, 7:12 PM EDT (23:12 UTC)
Expired: Jul 17, 2011, 8:15 PM EDT
In force: 63 min
Issued by: the Storm Prediction Center

Counties Coos County, NH, Clinton County, NY, Franklin County, NY, St. Lawrence County, NY, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orleans County, VT, Washington County, VT

The radar

The Burlington radar (KCXX), 39 km from the middle of the area, began a volume at 23:09 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.

Severe Thunderstorm Watch 654Jul 17, 7:40 PM EDT

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
Jul 17, 7:41 PM EDT	Severe Thunderstorm Watch	SPC	Coos, Grafton	5 hr

Nearby

Mesoscale Discussions in Vermont, 2011 Mesoscale Discussions in New York, 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; radar from the NEXRAD Level II archive.