Alert archive / Vermont / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 697

August 2, 20054 states

The Storm Prediction Center issued this severe thunderstorm watch at Aug 2, 2005, 3:25 PM EDT for 4 states. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Aug 2, 2005, 3:25 PM EDT (19:25 UTC)
Expired
Aug 2, 2005, 11:00 PM EDT
In force
8 hr
Issued by
the Storm Prediction Center
All 28 counties

Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Kennebec County, ME, Lincoln County, ME, Oxford County, ME, Sagadahoc County, ME, Carroll County, NH, Coos County, NH, Grafton County, NH, Clinton County, NY, Essex County, NY, Franklin County, NY, Hamilton County, NY, Herkimer County, NY, Warren County, NY, Addison County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Franklin County, VT, Grand Isle County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT, Windsor County, VT

The radar

The Burlington radar (KCXX), 35 km from the middle of the area, began a volume at 19:25 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

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

IssuedProductOfficeCountiesLasted
Aug 2, 5:09 PM EDTSevere Thunderstorm WarningBTVClinton36 min
Aug 2, 5:12 PM EDTSevere Thunderstorm WarningBTVEssex, Orleans63 min
Aug 2, 5:26 PM EDTSevere Thunderstorm WarningBTVFranklin94 min
Aug 2, 5:45 PM EDTSevere Thunderstorm WarningBTVClinton75 min
Aug 2, 6:50 PM EDTSevere Thunderstorm WarningBTVChittenden56 min
Aug 2, 7:00 PM EDTSevere Thunderstorm WarningBTVEssex, Franklin90 min
Aug 2, 7:07 PM EDTSevere Thunderstorm WarningGYXGrafton53 min
Aug 2, 10:10 PM EDTSevere Thunderstorm WarningGYXKennebec35 min
Aug 2, 10:17 PM EDTSevere Thunderstorm WarningGYXSagadahoc28 min
Aug 2, 10:23 PM EDTSevere Thunderstorm WarningGYXLincoln52 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.4 hours before the alert went out and 212 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 2005-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 700 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 2005-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 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
700 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
647 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 2, 10:13 AM EDTMesoscale DiscussionSPCAndroscoggin, Aroostook, Franklin, Kennebec, Oxford, Penobscot and 3 more3 hr
Aug 2, 11:55 AM EDTSevere Thunderstorm WatchSPCAndroscoggin, Cumberland, Franklin, Kennebec, Lincoln, Oxford and 6 more3 hr
Aug 2, 2:29 PM EDTMesoscale DiscussionSPCAndroscoggin, Cumberland, Franklin, Hancock, Kennebec, Lincoln and 7 more91 min

Nearby

Severe Thunderstorm Watches in Vermont, 2005Severe Thunderstorm Watches in Maine, 2005Severe Thunderstorm Watches in New York, 2005Every severe thunderstorm watch in 2005

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.