Alert archive / Massachusetts / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 23

March 10, 20026 states

The Storm Prediction Center issued this severe thunderstorm watch at Mar 10, 2002, 2:00 AM EST for 6 states. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Mar 10, 2002, 2:00 AM EST (07:00 UTC)
Expired
Mar 10, 2002, 6:00 AM EST
In force
4 hr
Issued by
the Storm Prediction Center
All 29 counties

Berkshire County, MA, Bristol County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Norfolk County, MA, Suffolk County, MA, Worcester County, MA, York County, ME, Belknap County, NH, Cheshire County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH, Nassau County, NY, Queens County, NY, Suffolk County, NY, Westchester County, NY, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI, Bennington County, VT, Windham County, VT

The radar

The Brookhaven radar (KOKX), 108 km from the middle of the area, began a volume at 07:01 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

Brookhaven, NY (KOKX), launched 00:00Z, 7.0 hours before the alert went out and 108 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, Brookhaven, NY at 00:00Z on 2002-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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, Brookhaven, NY at 00:00Z on 2002-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 232 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
10 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
541 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
232 m²/s²
0-3 km storm-relative helicity
336 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.

IssuedProductOfficeCountiesLasted
Mar 9, 8:30 PM ESTSevere Thunderstorm WatchSPCBroome, Cayuga, Chemung, Chenango, Cortland, Delaware and 20 more5 hr
Mar 9, 11:30 PM ESTSevere Thunderstorm WatchSPCAlbany, Bronx, Chenango, Clinton, Columbia, Delaware and 26 more4 hr

Nearby

Severe Thunderstorm Watches in Massachusetts, 2002Severe Thunderstorm Watches in Connecticut, 2002Severe Thunderstorm Watches in New Hampshire, 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.