Alert archive / Vermont / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 64, NWS Burlington, VT

August 4, 2024Chittenden County, Franklin County, Grand Isle County, Vermont; Clinton County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Aug 4, 2024, 1:22 PM EDT for Chittenden County, Franklin County, Grand Isle County, Vermont; Clinton County, New York. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 4, 2024, 1:22 PM EDT (17:22 UTC)
Expired
Aug 4, 2024, 2:00 PM EDT
In force
38 min
Issued by
NWS Burlington, VT
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

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

The radar

The Burlington radar (KCXX), 23 km from the middle of the area, began a volume at 17:22 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, 5.4 hours before the alert went out and 230 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 2024-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 707 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2024-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
707 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
623 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 4, 10:28 AM EDT, 2 hours 54 minutes earlier.

Area forecast discussion, Aug 4, 10:28 AM EDT, 2 hours 54 minutes before
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Hazardous weather outlook, Aug 4, 3:14 AM EDT, 10 hours 8 minutes before
Hazardous Weather Outlook
National Weather Service Burlington VT
314 AM EDT Sun Aug 4 2024

NYZ026>031-087-VTZ001>008-016-017-050715-
Northern St. Lawrence-Northern Franklin-Eastern Clinton-
Southeastern St. Lawrence-Southern Franklin-Western Clinton-
Southwestern St. Lawrence-Grand Isle-Western Franklin-Orleans-Essex-
Western Chittenden-Lamoille-Caledonia-Washington-Eastern Franklin-
Eastern Chittenden-
314 AM EDT Sun Aug 4 2024

This Hazardous Weather Outlook is for northern New York, central
Vermont, northeast Vermont and northwest Vermont.

.DAY ONE...Today and tonight.

Scattered showers and thunderstorms are possible today. A few could
be strong to locally severe and capable of producing gusty winds and
heavy rain.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

A cold front will shift southeast during the day Monday. A few
storms may be capable of producing gusty winds and heavy rain.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NYZ034-035-VTZ009>011-018>021-050715-
Western Essex-Eastern Essex-Western Addison-Orange-Western Rutland-
Eastern Addison-Eastern Rutland-Western Windsor-Eastern Windsor-
314 AM EDT Sun Aug 4 2024

This Hazardous Weather Outlook is for northern New York, central
Vermont and southern Vermont.

.DAY ONE...Today and tonight.

Scattered showers and thunderstorms are possible today. A few could
be strong to locally severe and capable of producing gusty winds and
heavy rain.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

A cold front will shift southeast during the day Monday. A Slight
Risk Outlook (Level 2 of 5) is in place across southern Vermont, with
isolated storms capable of gusty to damaging winds and very heavy
rainfall.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Aug 4, 12:15 PM EDT, 1 hour 7 minutes before
Special Weather Statement
National Weather Service Burlington VT
1215 PM EDT Sun Aug 4 2024

NYZ034-035-VTZ009-041645-
Western Essex NY-Eastern Essex NY-Western Addison VT-
1215 PM EDT Sun Aug 4 2024

...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL ESSEX AND
NORTHWESTERN ADDISON COUNTIES THROUGH 1245 PM EDT...

At 1214 PM EDT, Doppler radar was tracking a strong thunderstorm near
Keene Valley, moving east at 15 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Essex, Westport, Elizabethtown, Keene Valley, Panton, Addison,
Ferrisburgh, Lewis, Fort Cassin Point, Owls Head Bay, North West Bay,
Mud Island, Porter Bay, Potash Bay, Louis Clearing Bay, Fields Bay,
Moriah Center, New Russia, South Bay In Essex County, and Split Rock
Point.

This includes Interstate 87 between mile markers 101 and 123.

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.

If 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 4408 7325 4403 7376 4421 7382 4434 7334
TIME...MOT...LOC 1614Z 255DEG 12KT 4414 7369

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

Kremer
Special weather statement, Aug 4, 1:12 PM EDT, 10 minutes before
Special Weather Statement
National Weather Service Burlington VT
112 PM EDT Sun Aug 4 2024

VTZ003-004-041800-
Essex VT-Orleans VT-
112 PM EDT Sun Aug 4 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN ORLEANS AND
NORTHWESTERN ESSEX COUNTIES THROUGH 200 PM EDT...

At 111 PM EDT, Doppler radar was tracking a strong thunderstorm near
Derby Center, moving east at 15 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Island Pond, Derby Center, Charleston, Derby, Norton, Morgan, Warren
Gore, Warners Grant, Averys Gore, Brownington, Derby Center Village,
Holland, Brighton, Lewis, Westmore, East Brownington, West
Charleston, Morgan Center, and East Charleston.

This includes Interstate 91 between mile markers 171 and 176.

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 4482 7175 4479 7212 4497 7218 4501 7205
      4501 7179
TIME...MOT...LOC 1711Z 264DEG 13KT 4490 7207

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

Kremer

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 8:57 PM EDTSpecial Weather StatementBTVChittenden63 min
Aug 4, 1:12 PM EDTSpecial Weather StatementBTVOrleans48 min
Aug 4, 1:24 PM EDTSpecial Weather StatementBTVAddison51 min
Aug 4, 1:27 PM EDTAreal Flood WarningBTVEssex2 hr
Aug 4, 1:57 PM EDTSpecial Weather StatementBTVGrand Isle48 min
Aug 4, 1:58 PM EDTSpecial Weather StatementBTVEssex62 min
Aug 4, 2:02 PM EDTSevere Thunderstorm WarningBTVChittenden, Franklin, Grand Isle44 min
Aug 4, 2:18 PM EDTFlash Flood WarningBTVEssex3 hr
Aug 4, 2:37 PM EDTFlash Flood WarningBTVCaledonia, Essex, Orleans3 hr
Aug 4, 3:10 PM EDTSpecial Weather StatementBTVChittenden65 min
Aug 4, 3:14 PM EDTSpecial Weather StatementBTVChittenden61 min
Aug 4, 4:58 PM EDTSpecial Weather StatementBTVAddison47 min
Aug 4, 4:59 PM EDTSpecial Weather StatementBTVAddison46 min
Aug 4, 5:05 PM EDTSevere Thunderstorm WarningBTVAddison40 min
Aug 4, 5:09 PM EDTSevere Thunderstorm WarningBTVAddison, Rutland66 min
Aug 4, 5:25 PM EDTSpecial Weather StatementBTVChittenden50 min
Aug 4, 5:40 PM EDTSevere Thunderstorm WarningBTVAddison, Rutland, Washington, Windsor45 min
Aug 4, 5:45 PM EDTAreal Flood WarningBTVAddison, Chittenden2 hr
Aug 4, 6:08 PM EDTSpecial Weather StatementBTVLamoille67 min
Aug 4, 6:11 PM EDTAreal Flood WarningBTVChittenden101 min
Aug 4, 6:12 PM EDTSevere Thunderstorm WarningBTVAddison, Rutland48 min
Aug 4, 6:24 PM EDTSpecial Weather StatementBTVWindsor36 min
Aug 4, 6:38 PM EDTSpecial Weather StatementBTVRutland, Windsor67 min
Aug 4, 6:45 PM EDTAreal Flood WarningBTVCaledonia, Essex, Orange, Orleans3 hr
Aug 4, 6:59 PM EDTSevere Thunderstorm WarningBTVRutland, Windsor61 min
Aug 4, 7:02 PM EDTAreal Flood WarningBTVRutland97 min
Aug 4, 7:04 PM EDTSpecial Weather StatementBTVOrange26 min
Aug 4, 12:15 PM EDTSpecial Weather StatementBTVEssex30 min
Aug 4, 1:02 PM EDTAreal Flood WarningBTVEssex118 min
Aug 4, 2:06 PM EDTAreal Flood WarningBTVClinton3 hr
Aug 4, 3:26 PM EDTSpecial Weather StatementBTVFranklin64 min
Aug 4, 4:16 PM EDTSpecial Weather StatementBTVFranklin44 min
Aug 4, 4:30 PM EDTSpecial Weather StatementBTVClinton45 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2024Severe Thunderstorm Warnings in New York, 2024Every severe thunderstorm warning in 2024

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.