Alert archive / Vermont / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 52, NWS Burlington, VT

July 24, 2023Addison County, Vermont; Essex County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Jul 24, 2023, 1:21 PM EDT for Addison County, Vermont; Essex County, New York. It was in force for 2 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
Jul 24, 2023, 1:21 PM EDT (17:21 UTC)
Expired
Jul 24, 2023, 1:23 PM EDT
In force
2 min
Issued by
NWS Burlington, VT
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Essex County, NY, Addison County, VT

The radar

The Burlington radar (KCXX), 54 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 24, 1:06 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 5.4 hours before the alert went out and 257 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, Gray, ME at 12:00Z on 2023-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 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, Gray, ME at 12:00Z on 2023-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939587897Sfc1 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
7 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
1627 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 24, 10:50 AM EDT, 2 hours 31 minutes earlier.

Area forecast discussion, Jul 24, 10:50 AM EDT, 2 hours 31 minutes before
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Hazardous weather outlook, Jul 24, 3:41 AM EDT, 9 hours 40 minutes before
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In the hours before

Special weather statement, Jul 24, 11:58 AM EDT, 1 hour 23 minutes before
Special Weather Statement
National Weather Service Burlington VT
1158 AM EDT Mon Jul 24 2023

NYZ034-241700-
Western Essex NY-
1158 AM EDT Mon Jul 24 2023

...A strong thunderstorm will impact portions of southwestern Essex
County through 100 PM EDT...

At 1158 AM EDT, Doppler radar was tracking a strong thunderstorm near
Indian Lake, moving northeast at 25 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...
Newcomb, Vanderwhacker Mountain, and Tahawus.

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 4381 7408 4381 7412 4383 7415 4382 7419
      4381 7421 4392 7433 4394 7431 4397 7426
      4399 7426 4413 7411 4388 7382 4380 7405
TIME...MOT...LOC 1558Z 230DEG 20KT 4385 7428

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

Clay
Special weather statement, Jul 24, 12:41 PM EDT, 40 minutes before
Special Weather Statement
National Weather Service Burlington VT
1241 PM EDT Mon Jul 24 2023

NYZ030-031-241745-
Southern Franklin NY-Western Clinton NY-
1241 PM EDT Mon Jul 24 2023

...A strong thunderstorm will impact portions of southwestern Clinton
and northeastern Franklin Counties through 145 PM EDT...

At 1241 PM EDT, Doppler radar was tracking a strong thunderstorm near
Debar Mountain, moving northeast at 10 mph.

HAZARD...Winds in excess of 40 mph and nickel 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...
Debar Mountain, Bryants Mill, Duane Center, Owls Head, Chasm Falls,
and Wolf Pond.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4458 7425 4467 7434 4491 7411 4463 7395
TIME...MOT...LOC 1641Z 237DEG 10KT 4467 7423

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

Clay
Special weather statement, Jul 24, 12:51 PM EDT, 30 minutes before
Special Weather Statement
National Weather Service Burlington VT
1251 PM EDT Mon Jul 24 2023

NYZ027-029-030-241745-
Northern Franklin NY-Southeastern St. Lawrence NY-
Southern Franklin NY-
1251 PM EDT Mon Jul 24 2023

...A strong thunderstorm will impact portions of west central
Franklin and east central St. Lawrence Counties through 145 PM EDT...

At 1251 PM EDT, Doppler radar was tracking a strong thunderstorm near
Lake Ozonia, moving northeast at 10 mph.

HAZARD...Winds in excess of 40 mph and nickel 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...
Lake Ozonia, Madawaska, Dickinson, Santa Clara, St. Regis Falls,
Azure Mountain, and Dickinson Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4438 7464 4452 7481 4476 7456 4451 7429
TIME...MOT...LOC 1651Z 229DEG 10KT 4451 7465

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

Clay

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 1:28 PM EDTSevere Thunderstorm WarningBTVAddison62 min
Jul 24, 1:52 PM EDTSevere Thunderstorm WarningBTVAddison, Chittenden38 min
Jul 24, 2:19 PM EDTSevere Thunderstorm WarningBTVFranklin, Grand Isle41 min
Jul 24, 2:27 PM EDTSevere Thunderstorm WarningBTVAddison63 min
Jul 24, 2:58 PM EDTSevere Thunderstorm WarningBTVFranklin, Grand Isle62 min
Jul 24, 3:05 PM EDTSpecial Weather StatementBTVCaledonia40 min
Jul 24, 3:10 PM EDTFlash Flood WarningBTVAddison3 hr
Jul 24, 3:28 PM EDTSpecial Weather StatementBTVAddison47 min
Jul 24, 4:22 PM EDTFlash Flood WarningBTVAddison, Rutland2 hr
Jul 24, 11:58 AM EDTSpecial Weather StatementBTVEssex62 min
Jul 24, 12:41 PM EDTSpecial Weather StatementBTVFranklin64 min
Jul 24, 12:50 PM EDTSevere Thunderstorm WarningBTVEssex39 min
Jul 24, 12:51 PM EDTSpecial Weather StatementBTVFranklin54 min
Jul 24, 1:48 PM EDTSpecial Weather StatementBTVFranklin42 min
Jul 24, 3:03 PM EDTSevere Thunderstorm WarningBTVClinton, Essex, Franklin57 min
Jul 24, 3:05 PM EDTFlash Flood WarningBTVClinton3 hr
Jul 24, 4:12 PM EDTSpecial Weather StatementBTVFranklin63 min
Jul 24, 4:36 PM EDTSpecial Weather StatementBTVSt. Lawrence54 min
Jul 24, 5:20 PM EDTSpecial Weather StatementBTVFranklin55 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2023Severe Thunderstorm Warnings in New York, 2023Every severe thunderstorm warning in 2023

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.