Alert archive / New Hampshire / Severe Thunderstorm Watches in 2008

Severe Thunderstorm Watch 552

June 16, 2008Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; 5 counties in Massachusetts; 6 counties in New Hampshire

The Storm Prediction Center issued this severe thunderstorm watch at Jun 16, 2008, 3:27 PM EDT for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; 5 counties in Massachusetts; 6 counties in New Hampshire. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jun 16, 2008, 3:27 PM EDT (19:27 UTC)
Expired: Jun 16, 2008, 8:34 PM EDT
In force: 5 hr
Issued by: the Storm Prediction Center

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA, Belknap County, NH, Cheshire County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Sullivan County, NH

The radar

The Boston radar (KBOX), 149 km from the middle of the area, began a volume at 19:31 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.

Warnings issued inside it

6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 16, 3:58 PM EDT	Severe Thunderstorm Warning	BOX	Franklin	47 min
Jun 16, 4:24 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	36 min
Jun 16, 4:45 PM EDT	Severe Thunderstorm Warning	BOX	Franklin	45 min
Jun 16, 4:48 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire	57 min
Jun 16, 5:36 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Worcester	39 min
Jun 16, 7:09 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	51 min

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 7.5 hours before the alert went out and 151 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 519 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 10:19 AM EDT	Mesoscale Discussion	SPC		2 hr
Jun 16, 11:28 AM EDT	Severe Thunderstorm Watch	SPC	Northwest Hills Planning Region	10 hr
Jun 16, 1:21 PM EDT	Severe Thunderstorm Watch	SPC	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	10 hr
Jun 16, 6:18 PM EDT	Mesoscale Discussion	SPC		87 min

Nearby

Severe Thunderstorm Watches in New Hampshire, 2008 Severe Thunderstorm Watches in Massachusetts, 2008 Severe Thunderstorm Watches in Connecticut, 2008 Every severe thunderstorm watch in 2008

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.