A few strong thunderstorms traveled along the Quebec-Vermont border during the afternoon hours of June 15th. One of these thunderstorms moved into Vermont near the towns of Highgate and Franklin and produced a wind gust that downed several trees along Route 207 near Highgate Center.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BTV wrote it up.
A few strong thunderstorms traveled along the Quebec-Vermont border during the afternoon hours of June 15th. One of these thunderstorms moved into Vermont near the towns of Highgate and Franklin and produced a wind gust that downed several trees along Route 207 near Highgate Center.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Burlington, VT wrote its last area forecast discussion before the first event at Jun 15, 1:50 PM EST, 1 hour 26 minutes earlier.
Area Forecast Discussion National Weather Service Burlington VT 250 PM EDT Thu Jun 15 2023 .SYNOPSIS... It's time to get those umbrellas and rain jackets as we have a wet period of weather in store through the weekend. Showers and thunderstorms will be possible this afternoon and again on Friday with widespread moderate rainfall expected on Saturday. Rain will begin to taper off on Sunday but it appears we will enter another showery regime next week with chances for showers each afternoon through at least Wednesday. && .NEAR TERM /THROUGH FRIDAY NIGHT/... As of 250 PM EDT Thursday...We expect to see an uptick and shower and thunderstorm activity through 5 PM before seeing this activity quickly dwindle as we head into the evening hours. Current RAP data suggests between 500 and 1000 J/kg has either developed across portions of out forecast area or will be developing within the next few hours. Shear, on the other hand, is rather unimpressive with around 10 knots of deep layer shear present on current analysis. Winds throughout the whole column of the atmosphere before 30kft are 15 knots or less so any storms that develop this afternoon will be slow moving and could produce some locally heavy downpours. Some ponding of water will be possible but integrated water values remain low which will cap our precipitation rates to around a half of an inch per hour at best. We are watching a cluster of thunderstorms north of the International Border which could act as a catalyst for our shower and thunderstorm development. As these storms weaken, they could produce an outflow boundary which would be enough to lift the surface parcels helping to increase coverage of our showers and thunderstorms since we don't have any synoptic forcing to work with today. The mountains will also be another source of lift with storms firing along the higher terrain and moving into the valleys by mid to late afternoon. Weather tonight is expected to be on the quiet side with shower and thunderstorm activity ending during the evening hours. We should see some clearing in the skies which could allow for some patchy fog to develop once again Friday morning but shoulnd't be too widespread given the scattered cloud cover. High-res models are hinting that areas east of the Green Mountains like Montpelier and Springfield could see patchy to possibly dense fog after midnight but most places should just remain mild. Rain chances, along with thunderstorm chances, will increase again on Friday. An upper level disturbance east of James Bay in Canada will quickly sink southward and begin phasing with a developing upper level low on Friday and allow it to close off. The increased dynamics, especially the jet dynamics, should help produce a more favorable area of lift allowing for increased coverage of showers and thunderstorms. Model soundings look pretty impressive with 500 to 1000 J/kg and 20 knots of 0-6 km shear. We will still be lacking surface convergence but showers and thunderstorms should easily fire by late morning with most places likely to see rainfall on Friday. With the slight uptick in shear, it is possible we could see a few organized storms that could bring some gusty winds and heavy rain. However, severe potential again looks unlikely given the synoptic set up. Storms will be moving faster on Friday with soundings supporting storm motion of 35 mph compared to the measly 15 mph expected today. Rainfall may slightly taper off Friday night into early Saturday morning but the aforementioned closed low should set us up perfectly for a nice feed of Atlantic moisture which should bring a resurgence in shower activity Saturday morning. && .SHORT TERM /SATURDAY THROUGH SATURDAY NIGHT/... As of 250 PM EDT Thursday...A closed low will traverse our CWA on Saturday bringing widespread significant rainfall. Current model guidance is showing a conveyer belt of moisture setting up. This setup could result in storm total values over an inch for almost all of our forecast area with the Adirondacks reaching an inch and a half. Model soundings indicate moderate amounts of stability which will allow for localized convection to develop. Soil moisture values are already elevated due to recent rains, meaning the potential exists for flooding. && .LONG TERM /SUNDAY THROUGH WEDNESDAY/... As of 250 PM EDT Thursday...The low pressure will depart our region Sunday, taking the widespread shower activity with it. In the wake of the system we will be left with moderate amounts of stability allowing for scattered thunderstorm activity that will persist through Tuesday. Beginning on Wednesday, a ridge of high pressure could move into Quebec and suppress our precipitation potential. However, uncertainty remains high that far out into the forecast period. && .AVIATION /19Z THURSDAY THROUGH TUESDAY/... Through 18Z Friday...Isolated showers with a few rumbles of thunder will be possible at all terminals this afternoon. Areal coverage is expected to be limited at best so we have only included VCSH at all terminals except KEFK where there is better consensus on a few showers. Still, VFR conditions are likely to remain even under showers given high cloud bases and light precipitation. These showers and thunderstorms will dissipate by 00Z with a quiet stretch of weather expected overnight and into late Friday morning. More widespread showers and thunderstorms are expected on Friday with most terminals likely to experience precipitation at some point during the day. We will be able to pinpoint timing a little better in subsequent TAF packages but it looks like showers will impact most terminals by 18Z. There will be some patchy fog across eastern Vermont which could impact KMPV and KEFK. We have added some reduced visibilities at this time for the second half of the overnight period and will continue to monitor the conditions to see if we need to increase fog or remove it all together. Outlook... Friday Night: Mainly VFR, with areas MVFR possible. Definite SHRA, Slight chance TSRA. Saturday: Mainly MVFR, with local VFR possible. Definite SHRA, Slight chance TSRA. Saturday Night: Mainly MVFR, with local IFR possible. Chance SHRA. Sunday: Mainly MVFR, with local IFR possible. Likely SHRA. Sunday Night: Mainly MVFR, with areas IFR possible. Slight chance SHRA. Monday: Mainly MVFR, with areas IFR possible. Chance SHRA. Monday Night: Mainly VFR, with local IFR possible. Slight chance SHRA. Tuesday: Mainly VFR, with areas MVFR possible. Slight chance SHRA. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && SYNOPSIS...Clay NEAR TERM...Clay SHORT TERM...Langbauer LONG TERM...Langbauer AVIATION...Clay
Hazardous Weather Outlook National Weather Service Burlington VT 320 AM EDT Thu Jun 15 2023 NYZ026>031-034-035-087-VTZ001>011-016>021-160730- Northern St. Lawrence-Northern Franklin-Eastern Clinton- Southeastern St. Lawrence-Southern Franklin-Western Clinton- Western Essex-Eastern Essex-Southwestern St. Lawrence-Grand Isle- Western Franklin-Orleans-Essex-Western Chittenden-Lamoille-Caledonia- Washington-Western Addison-Orange-Western Rutland-Eastern Franklin- Eastern Chittenden-Eastern Addison-Eastern Rutland-Western Windsor- Eastern Windsor- 320 AM EDT Thu Jun 15 2023 This Hazardous Weather Outlook is for northern New York, central Vermont, northeast Vermont, northwest Vermont and southern Vermont. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Special Weather Statement
National Weather Service Burlington VT
221 PM EDT Thu Jun 15 2023
VTZ009>011-018>020-151915-
Eastern Rutland VT-Western Rutland VT-Western Windsor VT-
Western Addison VT-Eastern Addison VT-Orange VT-
221 PM EDT Thu Jun 15 2023
...A strong thunderstorm will impact portions of west central Orange,
southern Addison, north central Rutland and northwestern Windsor
Counties through 315 PM EDT...
At 221 PM EDT, Doppler radar was tracking a strong thunderstorm over
Middlebury, moving southeast at 20 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Middlebury, Cornwall, Sudbury, Weybridge, Hancock, Salisbury, Ripton,
Brandon, Leicester, Whiting, New Haven, Goshen, Rochester, Granville,
Hubbardton, Braintree, Bristol, Lincoln, Bridport, and East
Middlebury.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4403 7329 4412 7315 4394 7273 4373 7316
TIME...MOT...LOC 1821Z 320DEG 16KT 4401 7315
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
ClaySpecial Weather Statement
National Weather Service Burlington VT
316 PM EDT Thu Jun 15 2023
NYZ027-028-030-031-152000-
Eastern Clinton NY-Northern Franklin NY-Southern Franklin NY-
Western Clinton NY-
316 PM EDT Thu Jun 15 2023
...A strong thunderstorm will impact portions of northwestern Clinton
and northeastern Franklin Counties through 400 PM EDT...
At 316 PM EDT, Doppler radar was tracking a strong thunderstorm near
Chateaugay, moving southeast at 15 mph.
HAZARD...Winds in excess of 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Mooers, Burke, Churubusco, Ellenburg Depot, Chateaugay, Ellenburg,
Constable, Earlville, Mooers Forks, Burke Center, Cannon Corners,
North Burke, and Brainardsville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4498 7350 4482 7411 4499 7440 4501 7353
TIME...MOT...LOC 1916Z 309DEG 13KT 4502 7411
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
ClaySpecial Weather Statement
National Weather Service Burlington VT
348 PM EDT Thu Jun 15 2023
VTZ001>003-006-016-152045-
Western Franklin VT-Grand Isle VT-Eastern Franklin VT-Orleans VT-
Lamoille VT-
348 PM EDT Thu Jun 15 2023
...A strong thunderstorm will impact portions of northwestern
Lamoille, northwestern Orleans, northeastern Grand Isle and Franklin
Counties through 445 PM EDT...
At 348 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Highgate, moving southeast at 20 mph.
HAZARD...Winds in excess of 40 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Enosburg Falls, Franklin, Jay, Jay In Franklin County, Swanton
Village, Bakersfield, Berkshire, Highgate Falls, Montgomery Center,
Montgomery, Sheldon, Lake Carmi State Park, Enosburg, Swanton, North
Troy Village, Richford, Highgate, Enosburg Falls Village, Fletcher,
and Fairfield.
This includes Interstate 89 between mile markers 115 and 130.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4500 7231 4467 7296 4501 7324 4502 7291
TIME...MOT...LOC 1948Z 308DEG 18KT 4507 7310
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH
ClayThe Burlington radar (KCXX), 49 km away, was scanning. The volume nearest the first event began at 20:13 UTC.
1 thunderstorm wind, 1 hail. Local standard time, as filed.
Several trees blown down by thunderstorm winds along Route 207 as well as quarter size hail.
Quarter size hail observed accompanied by several trees blown down by thunderstorm winds along Route 207.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Vermont in 2023Every state in 2023This day in weather historyWarnings in Vermont, June 2023
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1106350, 1106354.