Alert archive / Vermont / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 39, NWS Burlington, VT

July 4, 2002Windsor County, Vermont

NWS Burlington, VT issued this severe thunderstorm warning at Jul 4, 2002, 6:13 PM EDT for Windsor County, Vermont. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 4, 2002, 6:13 PM EDT (22:13 UTC)
Expired: Jul 4, 2002, 6:45 PM EDT
In force: 32 min
Issued by: NWS Burlington, VT
Area: Whole counties

County Windsor County, VT

The radar

The Burlington radar (KCXX), 113 km from the middle of the area, began a volume at 22:15 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.

What was reported inside it

Time	Report	Where	Remark
Jul 4, 6:40 PM EDT	Hail 1	Taftsville, VT

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 10.2 hours before the alert went out and 141 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: 1695 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 1002 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: -15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

837 
WUUS51 KBTV 042213
SVRBTV
VTC027-042245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
613 PM EDT THU JUL 4 2002

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WINDSOR COUNTY IN VERMONT

* UNTIL 645 PM EDT

* AT 610 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER QUECHEE...MOVING SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR QUECHEE...WOODSTOCK...6 MILES NORTHEAST OF SOUTH WOODSTOCK...7
  MILES SOUTH OF WEST HARTFORD AROUND 610 PM EDT
  NEAR WHITE RIVER JUNCTION AROUND 620 PM EDT
  NEAR HARTLAND AROUND 630 PM EDT

.END

The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 9:00 PM EDT	Severe Thunderstorm Warning	BTV	Grand Isle	30 min
Jul 3, 10:01 PM EDT	Severe Thunderstorm Warning	BTV	Lamoille	29 min
Jul 3, 10:14 PM EDT	Severe Thunderstorm Warning	BTV	Orleans	46 min
Jul 3, 10:46 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia	44 min
Jul 4, 1:07 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Orleans	53 min
Jul 4, 1:18 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Washington	42 min
Jul 4, 1:41 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, Lamoille	49 min
Jul 4, 1:57 PM EDT	Severe Thunderstorm Warning	BTV	Washington	48 min
Jul 4, 2:06 PM EDT	Severe Thunderstorm Warning	BTV	Orleans	54 min
Jul 4, 2:20 PM EDT	Severe Thunderstorm Warning	BTV	Orange	55 min
Jul 4, 2:51 PM EDT	Severe Thunderstorm Warning	BTV	Chittenden	24 min
Jul 4, 3:14 PM EDT	Severe Thunderstorm Warning	BTV	Orange	61 min
Jul 4, 3:16 PM EDT	Flash Flood Warning	BTV	Washington	3 hr
Jul 4, 4:01 PM EDT	Flash Flood Warning	BTV	Washington	3 hr
Jul 4, 4:02 PM EDT	Flash Flood Warning	BTV	Orange	3 hr
Jul 4, 4:13 PM EDT	Severe Thunderstorm Warning	BTV	Orange	47 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2002 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.