A weak upper disturbance moved through a marginally unstable air mass which triggered numerous showers and a few scattered thunderstorms. One particular storm traveled along the Route 2 corridor in central-northeast VT with some damaging winds in Plainfield, Marshfield and Cabot.
Every event with a place to put it. Tap one for its entry below.
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 weak upper disturbance moved through a marginally unstable air mass which triggered numerous showers and a few scattered thunderstorms. One particular storm traveled along the Route 2 corridor in central-northeast VT with some damaging winds in Plainfield, Marshfield and Cabot.
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 Aug 7, 2:52 PM EST, 1 hour 43 minutes earlier.
Area Forecast Discussion National Weather Service Burlington VT 352 PM EDT Wed Aug 7 2019 .SYNOPSIS... Showers and possibly a thunderstorm or two will continue overnight, along with the potential for heavy rainfall. Showers and a few thunderstorms are expected again Thursday before cooler and drier weather moves into the North Country for the weekend. && .NEAR TERM /THROUGH THURSDAY NIGHT/... As of 350 PM EDT Wednesday...Active weather expected to continue through this evening. A Severe Thunderstorm Watch remain in effect for Rutland and Windsor Counties in south central Vermont until 9 pm. Strong to damaging winds, heavy rainfall, and perhaps some small hail are the primary concerns. A large upper trough is currently poised just to our west, with a couple of vigorous shortwaves rotating into the Northeast at this hour. The second of these vorts combined with CAPE values of 1500- 2000 J/kg has allowed numerous showers and thunderstorms to develop, particularly to our south. Things have been a bit slower to develop over our forecast area owing to this morning's cloud cover, more marginal lapse rates, and the increased distance from the dynamics associated with the shortwave currently over western NY. However, expect coverage to increase through the remainder of the afternoon as we see continued heating due to breaks in the cloud cover and the approach of the shortwave. Shear is somewhat limited at only 25-30 kt, but very steep low level lapse rates indicate the potential for gusty/damaging winds with any organized convection. The other concern will be the potential for very heavy rainfall, with PWATs 1.5-2.0 inches and warm cloud depths 9-11 kft. While northern areas, in particular northern NY, have a lesser chance to see severe thunderstorms (less shear and instability), these areas will need to be monitored for flooding potential as the NY shortwave will lift into northern NY and pivot as it moves eastward this evening. Regardless, this will keep showers/thunderstorms ongoing into the overnight hours. Once the vort goes by, a cold front currently positioned along the St Lawrence Valley, will move eastward, ushering in drier air in its wake late tonight into early Thursday. Therefore, anticipate precipitation to end from west to east well after midnight tonight, lingering through tomorrow morning across eastern VT as a weak wave will traverse along the aforementioned cold front. Thereafter, we will see a lull in shower/thunderstorm coverage as drier air works into the region. However, another cold front will cross the region late Thursday afternoon/evening, bringing another round of showers and thunderstorms to the region. Neither instability nor shear are too impressive tomorrow, and frontal passage will occur after peak heating, so don't anticipate more than just run-of-the-mill thunderstorms with the frontal passage. Showers will come to an end after midnight Thursday night with just a few mountain showers continuing thereafter. && .SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/... As of 350 PM EDT Wednesday...Surface cold front will be east of the forecast area by Friday morning with surface high pressure building into the western Great Lakes but aloft a closed upper low will be digging southward into central Quebec. Shortwave energy rounding the base of the trough will support the idea of scattered showers as low level lapse rate steepen with the best chance for showers being across northern areas during the mid-day through evening hours and only isolated showers possible Friday night. Temps will be noticeably cooler with highs mainly in the mid 70s and lows in the 50s. && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... As of 350 PM EDT Wednesday...As the aforementioned upper low continues to slowly track eastward across Quebec Saturday, additional shortwave energy clipping the international border will continue to provide the threat for showers across our northern zones Saturday. Pretty cold core low with 500mb temps under the center around -22C which could support some small hail in any convection that does develop, but not seeing much in the way in surface instability though so that threat should be low. Sunday, the low shifts offshore and the North Country will be under a brief ridge of high pressure with drier conditions and seasonal temperatures in the 70s. For Sunday night into the beginning of next week models differ on the timing of another upper low following on the heals of the previous on tracking southeastward through southern Canada. The GFS is a faster/more progressive solution with the trough passage Sunday night into Monday, while the ECMWF offers a more northern and slower track with less chances for precip and a later time of arrival. A general blend will offer a chance of showers through the period, with high pressure returning for Tuesday. && .AVIATION /20Z WEDNESDAY THROUGH MONDAY/... Through 18Z Thursday...Overall looking at VFR and MVFR conditions through the period. However, the weather will likely turn more active this afternoon and evening as the threat for thunderstorms will exist for most locations between 20z and 02z. Heavy rainfall, gusty winds, and small hail will be possible at all locations except KMSS, which will be northwest of the more active weather. Expect IFR conditions in the vicinity of the the thunderstorms. Plenty of moisture will linger after 00z along with some showers and MVFR/IFR conditions are expected through the remainder of the period. Winds will generally be under 10 knots through the period, but will be gusty near any thunderstorms. Outlook... Thursday Night: VFR. Chance SHRA, Slight chance TSRA. Friday: VFR. Chance SHRA, Slight chance TSRA. Friday Night: VFR. Slight chance SHRA. Saturday: VFR. Slight chance SHRA. Saturday Night: VFR. Slight chance SHRA. Sunday: VFR. Slight chance SHRA. Sunday Night: Mainly VFR, with local MVFR possible. Slight chance SHRA. Monday: Mainly VFR, with local MVFR possible. Chance SHRA. && .MARINE... The threat for strong to severe thunderstorms continues through this evening across a good part of the North Country. These storms could impact Lake Champlain in two different ways. First we are expecting showers and thunderstorms to move northeast across Lake Champlain through 9 pm. Any thunderstorms will have the potential to produce gusty winds, small hail, and very heavy downpours. Anyone planning to head out to Lake Champlain this afternoon or evening should stay weather aware and keep up to date on the latest forecasts and statements related to the storm threat. And as storms approach, seek safe harbor immediately. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && SYNOPSIS...Hastings NEAR TERM...Hastings SHORT TERM...Lahiff LONG TERM...Lahiff AVIATION...Hastings MARINE...Evenson/Hastings
Hazardous Weather Outlook National Weather Service Burlington VT 227 PM EDT Wed Aug 7 2019 NYZ026>031-034-035-087-VTZ001>010-016>018-081830- 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-Eastern Franklin- Eastern Chittenden-Eastern Addison- 227 PM EDT Wed Aug 7 2019 This Hazardous Weather Outlook is for northern New York, central Vermont, northeast Vermont and northwest Vermont. .DAY ONE...This afternoon and tonight. An active period of weather is expected this afternoon and tonight across the North Country as showers and thunderstorms become widespread across the area. Showers and storms over northeast New York and northwest Vermont will have the potential to produce heavy downpours and localized flooding. Meanwhile across central and southern Vermont thunderstorms will have the potential to produce gusty winds, small hail, and heavy downpours. Showers and a few thunderstorms will be possible on Thursday before cooler and drier weather moves into the North Country for the weekend. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. VTZ011-012-019-081830- Western Rutland-Windsor-Eastern Rutland- 227 PM EDT Wed Aug 7 2019 ...SEVERE THUNDERSTORM WATCH 561 IN EFFECT UNTIL 9 PM EDT THIS EVENING... This Hazardous Weather Outlook is for southern Vermont. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Severe Thunderstorm Watch. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. 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
337 PM EDT Wed Aug 7 2019
VTZ012-019-072030-
Eastern Rutland-Windsor-
337 PM EDT Wed Aug 7 2019
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN RUTLAND AND
SOUTHWESTERN WINDSOR COUNTIES...
At 335 PM EDT, a strong thunderstorm with very heavy rainfall was
located near Ludlow, moving northeast at 20 mph. This storm has
produced 1.67 near Ludlow in 45 minutes.
Locations impacted include...
Chester, Woodstock, Ludlow, Cavendish, Andover, Weston, Ludlow
Village, Perkinsville Village, Reading, Baltimore, Weathersfield,
West Windsor, Windsor, Mount Holly, Mount Tabor, Plymouth, Hartland,
Perkinsville, Felchville and Brownsville.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
LAT...LON 4326 7280 4326 7282 4330 7282 4330 7293
4357 7254 4342 7240 4324 7276
TIME...MOT...LOC 1935Z 234DEG 16KT 4335 7272PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VT
350 PM EDT WED AUG 07 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0330 PM TSTM WND DMG CROWN POINT 43.95N 73.44W
08/06/2019 ESSEX NY FIRE DEPT/RESCUE
DELAYED REPORT, TIME ESTIMATED BY RADAR. FIRE CHIEF
REPORTS SEVERAL DOWNED TREES ON CARS, ROADS, AND
POWERLINES ALONG FACTORYVILLE RD. FISHERMAN'S COVE,
WHITE CHURCH RD. AND RUSSELL ST.
&&
EVENT NUMBER BTV1901557
HAYNESSpecial Weather Statement National Weather Service Burlington VT 411 PM EDT Wed Aug 7 2019 NYZ028-031-034-035-072115- Eastern Clinton-Western Essex-Eastern Essex-Western Clinton- 411 PM EDT Wed Aug 7 2019 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN CLINTON AND NORTHEASTERN ESSEX COUNTIES... At 410 PM EDT, a strong thunderstorm was located near Keeseville, moving north at 10 mph. Winds in excess of 30 mph and pea size hail are possible with this storm. Locations impacted include... Plattsburgh, Plattsburgh International Airport, Peru, Schuyler Falls, Peasleeville, Keeseville, Port Kent, South Plattsburgh, Valcour Island, Spoon Bay, Cumberland Bay, Morrisonville, Cadyville, Ausable Point, Day Point, Smuggler Harbor, Clintonville, Harkness, Ausable Chasm and Tiger Point. Torrential rainfall is also occurring with this storm, and may cause localized flooding. Do not drive your vehicle through flooded roadways. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. LAT...LON 4444 7341 4441 7359 4469 7376 4473 7339 TIME...MOT...LOC 2010Z 171DEG 10KT 4445 7353 Neiles
Special Weather Statement
National Weather Service Burlington VT
519 PM EDT Wed Aug 7 2019
VTZ003-006>008-010-072215-
Caledonia-Washington-Orleans-Lamoille-Orange-
519 PM EDT Wed Aug 7 2019
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN LAMOILLE...SOUTHWESTERN
CALEDONIA...NORTH CENTRAL ORANGE...SOUTHERN ORLEANS AND CENTRAL
WASHINGTON COUNTIES...
At 518 PM EDT, a couple strong thunderstorm was located over Barre
and another over Montpelier, moving north at 30 mph.
Wind gusts up to 50 mph and pea size hail are possible with this
storm.
Locations impacted include...
Barre, Montpelier, Morrisville, Calais, Plainfield, Orange, Stannard,
Stowe, Hardwick, Websterville, East Montpelier, Marshfield Village,
Berlin, Wolcott, Groton, Greensboro Bend, Worcester, Middlesex,
Marshfield and Cabot Village.
LAT...LON 4408 7241 4414 7265 4459 7282 4460 7207
4421 7223
TIME...MOT...LOC 2118Z 200DEG 26KT 4419 7250
HaynesThe Burlington radar (KCXX), 67 km away, was scanning. The volume nearest the first event began at 21:35 UTC.
1 thunderstorm wind. Local standard time, as filed.
Spotty tree and wire damage due to fallen trees along the Route 2 corridor between Plainfield and Cabot.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Vermont in 2019Every state in 2019This day in weather historyWarnings in Vermont, August 2019
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: 834140.