Alert archive / Massachusetts / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 358

May 31, 20025 states

The Storm Prediction Center issued this severe thunderstorm watch at May 31, 2002, 2:15 PM EDT for 5 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 31, 2002, 2:15 PM EDT (18:15 UTC)
Expired
May 31, 2002, 8:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 31 counties

Berkshire County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Oxford County, ME, York County, ME, 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, Providence County, RI, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Orange County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 31, 2:38 PM EDTSevere Thunderstorm WarningALYBennington67 min
May 31, 2:59 PM EDTSevere Thunderstorm WarningGYXGrafton31 min
May 31, 3:18 PM EDTSevere Thunderstorm WarningGYXMerrimack, Sullivan42 min
May 31, 3:19 PM EDTSevere Thunderstorm WarningGYXMerrimack, Sullivan41 min
May 31, 3:28 PM EDTSevere Thunderstorm WarningBOXCheshire47 min
May 31, 3:32 PM EDTSevere Thunderstorm WarningGYXBelknap, Carroll, Merrimack58 min
May 31, 3:36 PM EDTSevere Thunderstorm WarningALYWindham54 min
May 31, 3:37 PM EDTSevere Thunderstorm WarningGYXFranklin, Oxford53 min
May 31, 4:01 PM EDTSevere Thunderstorm WarningGYXCumberland, Franklin, Oxford, York59 min
May 31, 4:06 PM EDTSevere Thunderstorm WarningBOXHillsborough39 min
May 31, 4:19 PM EDTSevere Thunderstorm WarningBOXCheshire26 min
May 31, 4:22 PM EDTSevere Thunderstorm WarningALYBerkshire53 min
May 31, 4:37 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire38 min
May 31, 4:40 PM EDTSevere Thunderstorm WarningGYXAndroscoggin, Cumberland, Franklin, Kennebec, Oxford, Somerset and 1 more65 min
May 31, 4:48 PM EDTSevere Thunderstorm WarningBOXHillsborough27 min
May 31, 4:56 PM EDTSevere Thunderstorm WarningBOXWorcester49 min
May 31, 5:10 PM EDTSevere Thunderstorm WarningBOXMiddlesex50 min
May 31, 5:26 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire, Worcester64 min
May 31, 5:49 PM EDTSevere Thunderstorm WarningBOXEssex26 min
May 31, 5:50 PM EDTSevere Thunderstorm WarningGYXRockingham40 min
May 31, 5:58 PM EDTSevere Thunderstorm WarningALYBerkshire62 min
May 31, 6:12 PM EDTSevere Thunderstorm WarningBOXFranklin48 min
May 31, 6:43 PM EDTSevere Thunderstorm WarningBOXProvidence47 min

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 6.3 hours before the alert went out and 133 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 12:00Z on 2002-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 59 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 12:00Z on 2002-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 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
59 J/kg
Mixed-layer CIN
-161 J/kg
Mixed-layer LCL
835 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
141 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
May 31, 4:15 PM EDTSevere Thunderstorm WatchSPCAndroscoggin, Aroostook, Hancock, Kennebec, Penobscot, Piscataquis and 2 more6 hr

Nearby

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