Alert archive / Vermont / Special Weather Statements in 2019
Special Weather Statement, NWS Burlington, VT
NWS Burlington, VT issued this special weather statement at Aug 6, 2019, 3:13 PM EDT for Grand Isle County, Vermont. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 6, 2019, 3:13 PM EDT (19:13 UTC)
- Expired
- Aug 6, 2019, 3:45 PM EDT
- In force
- 32 min
- Issued by
- NWS Burlington, VT
County Grand Isle County, VT
The radar
The Burlington radar (KCXX), 24 km from the middle of the area, began a volume at 19:13 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.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 7.2 hours before the alert went out and 205 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1483 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, 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 this special weather statement went out at Aug 6, 2:59 PM EDT, 14 minutes earlier.
Area forecast discussion, Aug 6, 2:59 PM EDT, 14 minutes before
Area Forecast Discussion National Weather Service Burlington VT 259 PM EDT Tue Aug 6 2019 .SYNOPSIS... Today will be the warmest day of the week with highs in the 80s. The chances for showers and a few thunderstorms will increase this afternoon and evening as the atmosphere becomes increasingly unstable. An upper level trough of low pressure will move out of the Ohio Valley on Wednesday and showers will be fairly widespread across the entire North Country Wednesday afternoon and evening. Thunderstorms will also be possible. && .NEAR TERM /THROUGH WEDNESDAY NIGHT/... As of 1026 AM EDT Tuesday...No big changes for the 1030 am update this morning, just to reflect current observations. Previous discussion follows. A quiet start to the day is expected with just some high level clouds moving across the area in the developing southwesterly flow aloft. As temperatures climb into the 80s this afternoon and dew points reach the upper 50s to lower 60s instability is expected to develop with CAPE values generally in the 500 to 1000 J/kg range. Should see convection develop over the higher terrain this afternoon in response to the instability...but deep layer shear is weak and feel only pulse storms are expected. Best instability and shear this afternoon and evening looks to be over parts of the Ohio Valley and the western portions of New York and Pennsylvania. This should be where the potential for stronger storms exists today. Convection should taper off this evening with the loss of instability...but do expect some lingering showers and clouds in the southwest flow aloft for much of the evening. Lows should be in the 60s to around 70 as higher dew points move into the region. Well defined shortwave trough will gradually move east out of the Ohio Valley on Wednesday. Dynamic forcing will increase over the Northeast and precipitation should be more widespread across the North Country Wednesday afternoon. Composite analysis suggests area with the most favorable shear and instability will be south of our area down across the mid-Atlantic region and extending northward into parts of southern New England. Further north over our area shear will once again be limited and CAPE values will likely be back in the 500 to 1000 J/kg range. As mentioned earlier dynamic forcing should allow for fairly widespread showers across the area Wednesday afternoon along with some thunderstorms. Will keep enhanced wording related to the storms out of the forecast for now...but still something that will need monitoring. With more clouds and higher dew points on Wednesday highs will be in the upper 70s to mid 80s...down a few degrees from today. && .SHORT TERM /THURSDAY THROUGH THURSDAY NIGHT/... As of 259 PM EDT Tuesday...We'll see another round of showers and thunderstorms on Thursday as a shortwave rotates around the upper trough draws near from the west. The best instability will be across central/southern sections, around 1000 J/kg. The best shear will lag behind though, not really increasing until late in the day ahead of the upper trough. Therefore, not anticipating any severe weather, subsequent shifts will need to monitor trends and make any necessary adjustments if the parameters line up more closely. The threat of precipitation will continue overnight Thursday night as additional rotate through the base of the trough, though any convection will wane in coverage and intensity once daytime heating is lost. Highs will range from the mid/upper 70s in the mountains to the lower/mid 80s in the wider valleys. Lows will be in the 50s to around 60. && .LONG TERM /FRIDAY THROUGH MONDAY/... As of 259 PM EDT Tuesday...It's going to stay fairly unsettled through the weekend as we'll remain under the influence of the aforementioned upper trough. Once the trough exits to the east, we'll be under fast zonal flow. Shortwaves will rotate around the trough and zip through the zonal flow, keeping the threat of showers around just about every day. Don't anticipate any complete washouts, but it's hard to time these waves this far out, so have gone with a lot of chance PoPs. After a cool weekend with highs will be in the upper 60s to mid 70s, we'll see temperatures pop back up to around normal early next week. && .AVIATION /19Z TUESDAY THROUGH SUNDAY/... Through 12Z Wednesday...Overall looking at VFR conditions through the period. Looking at mainly mid and high level clouds over the area with broken ceilings developing after 20z as the threat for some showers or thunderstorms develops. Visibilities will remain in the VFR category with any of the showers or storms. The threat for showers should come to an end around 04z. Winds will be light initially...then increase from the south and southwest with gusts in the 10 to 15 knot range. Outlook... Wednesday: VFR. Likely SHRA, Likely TSRA. Wednesday Night: Mainly VFR, with local IFR possible. Likely SHRA, Slight chance TSRA. Thursday: Mainly VFR, with local IFR possible. Likely SHRA, Chance TSRA. Thursday Night: VFR. Chance SHRA, Slight chance TSRA. Friday: VFR. Slight chance SHRA. Friday Night: Mainly VFR, with local MVFR possible. Slight chance SHRA. Saturday: Mainly VFR, with local MVFR possible. Chance SHRA. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None. && SYNOPSIS...Evenson NEAR TERM...Evenson/Neiles SHORT TERM...Hastings LONG TERM...Hastings AVIATION...Evenson
Hazardous weather outlook, Aug 6, 4:30 AM EDT, 10 hours 43 minutes before
Hazardous Weather Outlook National Weather Service Burlington VT 430 AM EDT Tue Aug 6 2019 NYZ026>031-034-035-087-VTZ001>012-016>019-070830- 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-Windsor- Eastern Franklin-Eastern Chittenden-Eastern Addison-Eastern Rutland- 430 AM EDT Tue Aug 6 2019 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...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Special weather statement, Aug 6, 2:50 PM EDT, 23 minutes before
Special Weather Statement National Weather Service Burlington VT 250 PM EDT Tue Aug 6 2019 NYZ034-035-061915- Western Essex-Eastern Essex- 250 PM EDT Tue Aug 6 2019 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN ESSEX COUNTY... At 250 PM EDT, a strong thunderstorm was located 8 miles northeast of Schroon Lake, moving northeast at 15 mph. Winds in excess of 30 mph and pea size hail are possible with this storm. Locations impacted include... Crown Point, Crown Point Center, North Hudson, Paradox, Severance, Schroon Falls, Ironville and Grass Island. LAT...LON 4386 7372 4396 7381 4412 7358 4394 7343 TIME...MOT...LOC 1850Z 242DEG 11KT 4395 7368 Lahiff
Special weather statement, Aug 6, 3:13 PM EDT, 0 minutes before
Special Weather Statement National Weather Service Burlington VT 313 PM EDT Tue Aug 6 2019 NYZ028-031-034-035-VTZ001-005-061945- Eastern Clinton-Western Essex-Eastern Essex-Western Clinton-Grand Isle-Western Chittenden- 313 PM EDT Tue Aug 6 2019 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN CLINTON... NORTHEASTERN ESSEX...SOUTHWESTERN GRAND ISLE AND NORTHWESTERN CHITTENDEN COUNTIES... At 312 PM EDT, a strong thunderstorm was located near Peru, moving northeast at 20 mph. Winds in excess of 30 mph are possible with this storm. Locations impacted include... Plattsburgh International Airport, Burlington, Plattsburgh, South Burlington, Peru, Schuyler Falls, Winooski, Colchester, South Hero, Port Kent, Keeseville, Grand Isle, Wilcox Point, Stave Island, Sunset Island, Malletts Bay, Clintonville, Kellogg Island, Jackson Point and Hoyt Point. 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. If you are on or near Lake Champlain, get out of the water and move indoors or inside a vehicle. Remember, lightning can strike out to 10 miles from the parent thunderstorm. If you can hear thunder, you are close enough to be struck by lightning. Move to safe shelter now! Do not be caught on the water in a thunderstorm. LAT...LON 4440 7359 4457 7370 4473 7333 4450 7316 TIME...MOT...LOC 1912Z 242DEG 17KT 4453 7355 Lahiff
The office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 3:17 PM EDT | Special Weather Statement | BTV | Addison | 58 min |
| Aug 6, 3:44 PM EDT | Special Weather Statement | BTV | Chittenden | 46 min |
| Aug 6, 4:20 PM EDT | Special Weather Statement | BTV | Franklin | 25 min |
| Aug 6, 4:32 PM EDT | Special Weather Statement | BTV | Chittenden | 58 min |
| Aug 6, 7:32 PM EDT | Special Weather Statement | BTV | Washington | 58 min |
| Aug 6, 2:50 PM EDT | Special Weather Statement | BTV | Essex | 25 min |
Nearby
Special Weather Statements in Vermont, 2019Every special weather statement in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.