Alert archive / New Hampshire / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 463

June 23, 2002Berkshire County, Franklin County, Hampshire County, Massachusetts; 9 counties in New Hampshire; 4 counties in Vermont

The Storm Prediction Center issued this severe thunderstorm watch at Jun 23, 2002, 9:00 PM EDT for Berkshire County, Franklin County, Hampshire County, Massachusetts; 9 counties in New Hampshire; 4 counties in Vermont. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jun 23, 2002, 9:00 PM EDT (01:00 UTC)
Expired
Jun 24, 2002, 1:00 AM EDT
In force
4 hr
Issued by
the Storm Prediction Center

Counties Berkshire County, MA, Franklin County, MA, Hampshire County, MA, 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, Bennington County, VT, Rutland County, VT, Windham County, VT, Windsor County, VT

The radar

The Burlington radar (KCXX), 152 km from the middle of the area, began a volume at 01:02 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, 1.0 hours before the alert went out and 132 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-pSkew-T log-p diagram, Albany, NY at 00:00Z on 2002-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1763 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 00:00Z on 2002-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1763 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1026 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
222 m²/s²
Significant tornado parameter
1.5
Supercell composite
14.4

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in New Hampshire, 2002Severe Thunderstorm Watches in Vermont, 2002Severe Thunderstorm Watches in Massachusetts, 2002Every severe thunderstorm watch in 2002

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.