Alert archive / Vermont / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 21, NWS Burlington, VT

June 14, 2013Chittenden County, Franklin County, Grand Isle County, Vermont; Clinton County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Jun 14, 2013, 5:49 PM EDT for Chittenden County, Franklin County, Grand Isle County, Vermont; Clinton County, New York. It was in force for 56 min. 1 report 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
Jun 14, 2013, 5:49 PM EDT (21:49 UTC)
Expired
Jun 14, 2013, 6:45 PM EDT
In force
56 min
Issued by
NWS Burlington, VT
Area
Storm-based polygon

Counties Clinton County, NY, Chittenden County, VT, Franklin County, VT, Grand Isle County, VT

The radar

The Burlington radar (KCXX), 33 km from the middle of the area, began a volume at 21:53 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
Jun 14, 6:06 PM EDTHAIL 1Rouses Point, NYQUARTER SIZE HAILSTONES IN ROUSES POINT.

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

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 9.8 hours before the alert went out and 240 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 2013-06-14Temperature 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, Albany, NY at 12:00Z on 2013-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
776 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
-41 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.

125 
WUUS51 KBTV 142149
SVRBTV
NYC019-VTC007-011-013-142245-
/O.NEW.KBTV.SV.W.0021.130614T2149Z-130614T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
549 PM EDT FRI JUN 14 2013

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GRAND ISLE COUNTY IN NORTHWEST VERMONT...
  NORTHEASTERN CLINTON COUNTY IN NORTHERN NEW YORK...
  NORTHWESTERN CHITTENDEN COUNTY IN NORTHWEST VERMONT...
  SOUTHWESTERN FRANKLIN COUNTY IN NORTHWEST VERMONT...

* UNTIL 645 PM EDT.

* AT 542 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS NEAR ROUSES
  POINT...MOVING SOUTHEAST AT 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO...
  ISLE LA MOTTE...SOUTH ALBURGH...ALBURGH DUNES STATE PARK...NORTH
  HERO...KNIGHT ISLAND STATE PARK...BURTON ISLAND STATE PARK...WOODS
  ISLAND STATE PARK...GRAND ISLE...GEORGIA CENTER...SAND BAR STATE
  PARK...

THIS SEVERE THUNDERSTORM IS ALSO PRODUCING DEADLY CLOUD TO GROUND
LIGHTNING. VERY HEAVY RAIN CAN ALSO BE EXPECTED WITH THIS SEVERE 
THUNDERSTORM...WHICH MAY CAUSE WATER PONDING ON ROADS AND IN POOR 
DRAINAGE AREAS.

WHEN YOU CAN DO SO SAFELY...PLEASE REPORT 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...

GET TO SAFETY IMMEDIATELY WHEN THREATENING WEATHER APPROACHES. WINDS
MAY KNOCK DOWN TREES AND POWER LINES AND DAMAGE BUILDINGS. LARGE HAIL
MAY CAUSE INJURY AND DAMAGE PROPERTY.

BOATERS ON LAKE CHAMPLAIN SHOULD SEEK SAFE HARBOR NOW! STRONG WINDS
WILL CAUSE HIGHER WAVES AND SUDDEN WIND SHIFTS MAY OVERTURN BOATS.


&&

LAT...LON 4465 7296 4453 7330 4496 7353 4502 7337
      4502 7328
TIME...MOT...LOC 2149Z 333DEG 14KT 4492 7336

$$
LOCONTO
2 follow-up statements
607 
WWUS51 KBTV 142216
SVSBTV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
616 PM EDT FRI JUN 14 2013

NYC019-VTC007-011-013-142245-
/O.CON.KBTV.SV.W.0021.000000T0000Z-130614T2245Z/
GRAND ISLE VT-CLINTON NY-CHITTENDEN VT-FRANKLIN VT-
616 PM EDT FRI JUN 14 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR EAST CENTRAL CLINTON COUNTY IN NORTHERN NEW YORK...AND
SOUTHWESTERN FRANKLIN...NORTHWESTERN CHITTENDEN AND GRAND ISLE
COUNTIES IN NORTHWEST VERMONT...

AT 614 PM EDT A SEVERE THUNDERSTORM WAS REPORTED PRODUCING QUARTER 
SIZE HAIL. THE STORM WAS NEAR CHAZY LANDING...MOVING SOUTHEAST AT 
15 MPH. THIS SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING 
DAMAGING WINDS IN EXCESS OF 60 MPH. 

AT 606 PM EDT...THE PUBLIC REPORTED QUARTER SIZE HAILSTONES IN 
ROUSES POINT. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO...
  ISLE LA MOTTE...ALBURGH DUNES STATE PARK...NORTH HERO...DAMEAS
  ISLAND...KNIGHT POINT STATE PARK...NICHOLS POINT...GRAND ISLE...
  BURTON ISLAND STATE PARK...

THIS SEVERE THUNDERSTORM IS ALSO CAPABLE OF PRODUCING DEADLY CLOUD TO
GROUND LIGHTNING.

WHEN YOU CAN DO SO SAFELY...PLEASE REPORT 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...

GET TO SAFETY IMMEDIATELY WHEN THREATENING WEATHER APPROACHES. WINDS
MAY KNOCK DOWN TREES AND POWER LINES AND DAMAGE BUILDINGS. LARGE HAIL
MAY CAUSE INJURY AND DAMAGE PROPERTY.

BOATERS ON LAKE CHAMPLAIN SHOULD SEEK SAFE HARBOR NOW! STRONG WINDS
WILL CAUSE HIGHER WAVES AND SUDDEN WIND SHIFTS MAY OVERTURN BOATS.

&&

LAT...LON 4500 7326 4495 7322 4471 7302 4461 7334
      4492 7351
TIME...MOT...LOC 2214Z 333DEG 14KT 4487 7336

$$

LOCONTO
157 
WWUS51 KBTV 142241
SVSBTV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
641 PM EDT FRI JUN 14 2013

NYC019-VTC007-011-013-142251-
/O.EXP.KBTV.SV.W.0021.000000T0000Z-130614T2245Z/
GRAND ISLE VT-CLINTON NY-CHITTENDEN VT-FRANKLIN VT-
641 PM EDT FRI JUN 14 2013

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CLINTON COUNTY IN
NORTHERN NEW YORK...AND SOUTHWESTERN FRANKLIN...NORTHWESTERN
CHITTENDEN AND GRAND ISLE COUNTIES IN NORTHWEST VERMONT WILL EXPIRE
AT 645 PM EDT...

THE STORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE NATIONAL 
WEATHER SERVICE HAS ALLOWED THE SEVERE THUNDERSTORM WARNING TO 
EXPIRE.

HOWEVER...THUNDERSTORMS WITH SMALL HAIL...BRIEF GUSTY WINDS...HEAVY
DOWNPOURS...AND DEADLY LIGHTNING REMAIN POSSIBLE.

IF YOU HEAR THUNDER...LIGHTNING IS CLOSE ENOUGH TO STRIKE YOU. STAY
IN SAFE SHELTER AT LEAST 30 MINUTES AFTER YOU HEAR THE LAST CLAP OF
THUNDER.

WHEN YOU CAN DO SO SAFELY...PLEASE REPORT 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 4500 7326 4495 7322 4471 7302 4461 7334
      4492 7351
TIME...MOT...LOC 2241Z 333DEG 14KT 4478 7329

$$

LOCONTO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 5:33 PM EDTSpecial Weather StatementBTVGrand Isle57 min
Jun 14, 6:44 PM EDTSpecial Weather StatementBTVLamoille61 min
Jun 14, 4:09 PM EDTSpecial Weather StatementBTVClinton66 min
Jun 14, 6:24 PM EDTSpecial Weather StatementBTVEssex51 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2013Severe Thunderstorm Warnings in New York, 2013Every severe thunderstorm warning in 2013

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.