Alert archive / Vermont / Tornado Warnings in 2011

Tornado Warning 4, NWS Burlington, VT

May 26, 2011Caledonia County, Essex County, Vermont

NWS Burlington, VT issued this tornado warning at May 26, 2011, 7:59 PM EDT for Caledonia County, Essex County, Vermont. It was in force for 31 min. 6 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 26, 2011, 7:59 PM EDT (23:59 UTC)
Expired
May 26, 2011, 8:30 PM EDT
In force
31 min
Issued by
NWS Burlington, VT
Area
Storm-based polygon

Counties Caledonia County, VT, Essex County, VT

The radar

The Burlington radar (KCXX), 115 km from the middle of the area, began a volume at 00:04 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

TimeReportWhereRemark
May 26, 8:00 PM EDTHAIL 1.252 Ene Passumpsic, VTHALF DOLLAR SIZE HAIL
May 26, 8:00 PM EDTHAIL 1.75St. Johnsbury, VTGOLF BALL SIZE HAIL REPORTED
May 26, 8:05 PM EDTHAIL 1.753 Nw Lower Waterford, VTGOLF BALL SIZE HAIL ON DUCK POND ROAD
May 26, 8:15 PM EDTTSTM WND DMGConcord, VTUS ROUTE 2 CLOSED FROM CONCORD LUNENBURG TO NH BORDER DUE TO NUMEROUS TREES AND POWERLINES DOWN.
May 26, 8:15 PM EDTTSTM WND DMGLunenburg, VTTREES AND POWERLINES DOWN ALONG ROUTE 2
May 26, 8:15 PM EDTHAIL 1Dalton, NH

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 26, 12:29 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 12.0 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, Gray, ME at 12:00Z on 2011-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Gray, ME at 12:00Z on 2011-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
986 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
272 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

528 
WFUS51 KBTV 262359
TORBTV
VTC005-009-270030-
/O.NEW.KBTV.TO.W.0004.110526T2359Z-110527T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
759 PM EDT THU MAY 26 2011

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL CALEDONIA COUNTY IN NORTHEAST VERMONT...
  SOUTHERN ESSEX COUNTY IN NORTHEAST VERMONT...

* UNTIL 830 PM EDT.

* AT 754 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE POSSIBLE
  TORNADO WAS LOCATED NEAR LOWER WATERFORD...MOVING EAST AT 40 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO...
  VICTORY...GILMAN...GRANBY...LUNENBURG...

THIS TORNADIC STORM IS ALSO CAPABLE OF PRODUCING DAMAGING STRAIGHT
LINE WINDS...BASEBALL SIZE HAIL...AND DEADLY LIGHTNING.

WHEN YOU CAN DO SO SAFELY...PLEASE REPORT TORNADOES...DAMAGING
WINDS...OR HAIL TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL
FREE...1 800 8 6 3 4 2 7 9...OR BY SUBMITTING A STORM REPORT AT
WEATHER.GOV/BURLINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...VEHICLE...OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS. AS A LAST RESORT..LIE DOWN IN A LOW
LYING AREA AND COVER YOUR HEAD.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM THURSDAY EVENING FOR
NORTHERN NEW YORK AND VERMONT.

&&

LAT...LON 4456 7159 4454 7157 4450 7157 4444 7165
      4440 7171 4439 7179 4435 7181 4434 7184
      4434 7191 4432 7202 4454 7203 4466 7158
      4465 7156 4458 7153
TIME...MOT...LOC 2359Z 253DEG 36KT 4440 7185

$$
1 follow-up statement
494 
WWUS51 KBTV 270025
SVSBTV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
825 PM EDT THU MAY 26 2011

VTC005-009-270035-
/O.EXP.KBTV.TO.W.0004.000000T0000Z-110527T0030Z/
CALEDONIA VT-ESSEX VT-
825 PM EDT THU MAY 26 2011

...THE TORNADO WARNING FOR SOUTHERN ESSEX AND EAST CENTRAL CALEDONIA
COUNTIES IN NORTHEAST VERMONT WILL EXPIRE AT 830 PM EDT...

THE TORNADIC THUNDERSTORM HAS MOVED OUT OF THE AREA. THEREFORE THE
NATIONAL WEATHER SERVICE HAS ALLOWED THE TORNADO WARNING TO EXPIRE.

WHEN YOU CAN DO SO SAFELY...PLEASE REPORT TORNADOES...DAMAGING
WINDS...OR HAIL TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL
FREE...1 800 8 6 3 4 2 7 9...OR BY SUBMITTING A STORM REPORT AT
WEATHER.GOV/BURLINGTON.

LAT...LON 4456 7159 4454 7157 4450 7157 4444 7165
      4440 7171 4439 7179 4435 7181 4434 7184
      4434 7191 4432 7202 4454 7203 4466 7158
      4465 7156 4458 7153
TIME...MOT...LOC 0025Z 253DEG 36KT 4447 7150

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 10:05 AM EDTFlash Flood WatchBTVAddison, Caledonia, Chittenden, Essex, Franklin, Grand Isle and 5 more42 hr
May 26, 12:44 PM EDTSpecial Weather StatementBTVChittenden, Grand Isle61 min
May 26, 12:53 PM EDTSevere Thunderstorm WarningBTVChittenden, Franklin, Grand Isle67 min
May 26, 1:59 PM EDTSevere Thunderstorm WarningBTVCaledonia, Chittenden, Essex, Franklin, Lamoille, Orleans61 min
May 26, 2:30 PM EDTSpecial Weather StatementBTVAddison, Chittenden, Grand Isle30 min
May 26, 2:55 PM EDTSevere Thunderstorm WarningBTVCaledonia, Essex, Orleans50 min
May 26, 3:45 PM EDTSpecial Weather StatementBTVAddison, Chittenden, Franklin, Grand Isle60 min
May 26, 4:15 PM EDTAreal Flood AdvisoryBTVAddison, Chittenden, Franklin, Grand Isle, Lamoille, Orleans6 hr
May 26, 4:27 PM EDTSevere Thunderstorm WarningBTVChittenden, Franklin, Grand Isle, Lamoille, Orleans63 min
May 26, 4:34 PM EDTSevere Thunderstorm WarningBTVAddison, Chittenden, Franklin, Grand Isle56 min
May 26, 5:23 PM EDTSevere Thunderstorm WarningBTVAddison, Chittenden, Franklin, Grand Isle, Lamoille, Orleans67 min
May 26, 6:07 PM EDTSevere Thunderstorm WarningBTVCaledonia, Chittenden, Essex, Lamoille, Orleans, Washington53 min
May 26, 6:24 PM EDTSevere Thunderstorm WarningBTVAddison, Caledonia, Chittenden, Lamoille, Orange, Rutland and 2 more66 min
May 26, 6:54 PM EDTTornado WarningBTVCaledonia, Orange, Washington36 min
May 26, 6:58 PM EDTSevere Thunderstorm WarningBTVCaledonia, Essex, Washington32 min
May 26, 7:29 PM EDTTornado WarningBTVCaledonia, Essex, Orange, Washington31 min
May 26, 7:30 PM EDTSevere Thunderstorm WarningBTVAddison, Chittenden, Washington60 min
May 26, 7:33 PM EDTFlash Flood WarningBTVChittenden, Washington3 hr
May 26, 7:45 PM EDTTornado WarningBTVAddison, Caledonia, Orange, Washington30 min

Nearby

Tornado Warnings in Vermont, 2011Every tornado warning in 2011Tornadoes in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.