Alert archive / Vermont / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 13, NWS Burlington, VT
NWS Burlington, VT issued this severe thunderstorm warning at May 31, 2017, 2:30 PM EDT for Essex County, New York; Chittenden County, Grand Isle County, Vermont. It was in force for 45 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 31, 2017, 2:30 PM EDT (18:30 UTC)
- Expired
- May 31, 2017, 3:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Burlington, VT
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Essex County, NY, Chittenden County, VT, Grand Isle County, VT
The radar
The Burlington radar (KCXX), 13 km from the middle of the area, began a volume at 18:32 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 |
|---|---|---|---|
| May 31, 2:50 PM EDT | TSTM WND DMG | Colchester, VT | TREED DOWN NEXT TO HOUSE ON E RD. TIME ESTIMATED |
| May 31, 2:50 PM EDT | HAIL 0.25 | Malletts Bay, VT | REPORT RELAYED BY MEDIA |
| May 31, 2:50 PM EDT | HAIL 1 | 1 Ese Malletts Bay, VT | REPORTED AT COLCHESTER PD |
| May 31, 2:59 PM EDT | HAIL 0.25 | 2 Ene Appletree Point, VT | |
| May 31, 2:59 PM EDT | HAIL 0.25 | Burlington, VT | PEA SIZE AT UNIV VERMONT |
| May 31, 3:00 PM EDT | HAIL 0.75 | Colchester, VT | MOSTLY DIME TO NICKLE SIZE. COUPLE OF QUARTER SIZE HAIL STONES. ON BLAKELY RD |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 31, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 6.5 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.
- Mixed-layer CAPE
- 1 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 690 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
549
WUUS51 KBTV 311830
SVRBTV
NYC031-VTC007-013-311915-
/O.NEW.KBTV.SV.W.0013.170531T1830Z-170531T1915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Burlington VT
230 PM EDT WED MAY 31 2017
The National Weather Service in Burlington has issued a
* Severe Thunderstorm Warning for...
Northeastern Essex County in northern New York...
Southwestern Grand Isle County in northwestern Vermont...
Chittenden County in northwestern Vermont...
* Until 315 PM EDT
* At 230 PM EDT, a severe thunderstorm was located over Ferris Rock,
moving east at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
* Locations impacted include...
Essex Junction, South Burlington, Burlington International Airport,
Burlington, Winooski, Westford, Colchester, Essex Junction Village,
Williston, Bolton, Port Kent, Richmond, Underhill, Jericho, St.
George, Essex, Jericho Village, Underhill State Park, Shelburne and
South Hero.
Boaters on Lake Champlain should seek safe harbor now! Strong winds
will cause higher waves and sudden wind shifts may overturn boats.
LAT...LON 4455 7283 4455 7281 4452 7283 4450 7280
4446 7284 4445 7280 4441 7284 4439 7281
4436 7283 4437 7344 4454 7343 4455 7334
4458 7338 4462 7339 4463 7290
TIME...MOT...LOC 1830Z 273DEG 27KT 4453 7335
HAIL...0.75IN
WIND...60MPH
$$
JMG1 follow-up statement
719
WWUS51 KBTV 311855
SVSBTV
Severe Weather Statement
National Weather Service Burlington VT
255 PM EDT WED MAY 31 2017
NYC031-311904-
/O.CAN.KBTV.SV.W.0013.000000T0000Z-170531T1915Z/
Essex NY-
255 PM EDT WED MAY 31 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ESSEX COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the area. Therefore the warning has been cancelled.
A severe thunderstorm watch remains in effect until 900 PM EDT for
northern New York...and central and northwestern Vermont.
LAT...LON 4455 7283 4455 7281 4452 7283 4450 7281
4446 7284 4445 7280 4441 7284 4440 7284
4439 7281 4436 7283 4437 7333 4444 7329
4450 7331 4455 7334 4462 7332 4463 7291
TIME...MOT...LOC 1854Z 273DEG 27KT 4452 7320
$$
VTC007-013-311915-
/O.CON.KBTV.SV.W.0013.000000T0000Z-170531T1915Z/
Grand Isle VT-Chittenden VT-
255 PM EDT WED MAY 31 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR SOUTH CENTRAL GRAND ISLE AND CHITTENDEN COUNTIES...
At 254 PM EDT, a severe thunderstorm was located over Colchester,
moving east at 30 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and powerlines.
Locations impacted include...
Essex Junction, South Burlington, Burlington International Airport,
Burlington, Winooski, Westford, Colchester, Essex Junction Village,
Williston, Bolton, Richmond, Underhill, Jericho, St. George, Essex,
Jericho Village, Underhill State Park, Shelburne, South Hero and
Milton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4455 7283 4455 7281 4452 7283 4450 7281
4446 7284 4445 7280 4441 7284 4440 7284
4439 7281 4436 7283 4437 7333 4444 7329
4450 7331 4455 7334 4462 7332 4463 7291
TIME...MOT...LOC 1854Z 273DEG 27KT 4452 7320
HAIL...0.75IN
WIND...60MPH
$$
JMGThe office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 8:43 PM EDT | Special Weather Statement | BTV | St. Lawrence | 62 min |
| May 31, 6:32 PM EDT | Special Weather Statement | BTV | Essex | 58 min |
| May 31, 2:05 PM EDT | Special Weather Statement | BTV | Franklin | 40 min |
| May 31, 3:14 PM EDT | Severe Thunderstorm Warning | BTV | Addison, Chittenden, Franklin, Lamoille, Washington | 46 min |
| May 31, 3:35 PM EDT | Special Weather Statement | BTV | Rutland | 40 min |
| May 31, 3:46 PM EDT | Severe Thunderstorm Warning | BTV | Addison, Rutland | 44 min |
| May 31, 4:05 PM EDT | Severe Thunderstorm Warning | BTV | Caledonia, Essex, Orleans, Washington | 40 min |
| May 31, 4:48 PM EDT | Severe Thunderstorm Warning | BTV | Caledonia, Essex | 27 min |
| May 31, 5:12 PM EDT | Severe Thunderstorm Warning | BTV | Orange, Windsor | 33 min |
Nearby
Severe Thunderstorm Warnings in Vermont, 2017Severe Thunderstorm Warnings in New York, 2017Every severe thunderstorm warning in 2017
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.