Alert archive / Vermont / Flash Flood Warnings in 2023

Flash Flood Warning 50, NWS Burlington, VT

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

NWS Burlington, VT issued this flash flood warning at Jul 24, 2023, 4:22 PM EDT for Addison County, Rutland County, Vermont; Essex County, New York. It was in force for 2 hr. 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, 4:22 PM EDT (20:22 UTC)
Expired: Jul 24, 2023, 6:22 PM EDT
In force: 2 hr
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Flood severity: None

Counties Essex County, NY, Addison County, VT, Rutland County, VT

The radar

The Burlington radar (KCXX), 68 km from the middle of the area, began a volume at 20:23 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

Gray, ME (KGYX), launched 12:00Z, 8.4 hours before the alert went out and 245 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 flash flood 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 flash flood warning went out at Jul 24, 4:00 PM EDT, 22 minutes earlier.

Area forecast discussion, Jul 24, 4:00 PM EDT, 22 minutes before

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Hazardous weather outlook, Jul 24, 1:36 PM EDT, 2 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Burlington VT
136 PM EDT Mon Jul 24 2023

NYZ026>031-034-035-087-VTZ001>011-016>021-251745-
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-
136 PM EDT Mon Jul 24 2023

...SEVERE THUNDERSTORM WATCH 544 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

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

Excessive heat is possible in the Thursday through Friday timeframe.
Maximum heat index values may rise into the low to mid 90s in valley
locations.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jul 24, 3:18 PM EDT, 1 hour 4 minutes before

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Special weather statement, Jul 24, 3:28 PM EDT, 54 minutes before

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Local storm report, Jul 24, 3:43 PM EDT, 39 minutes before

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Local storm report, Jul 24, 3:45 PM EDT, 37 minutes before

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Local storm report, Jul 24, 4:06 PM EDT, 16 minutes before

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Special weather statement, Jul 24, 4:12 PM EDT, 10 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 1:21 PM EDT	Severe Thunderstorm Warning	BTV	Addison	2 min
Jul 24, 1:28 PM EDT	Severe Thunderstorm Warning	BTV	Addison	62 min
Jul 24, 1:52 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Chittenden	38 min
Jul 24, 2:19 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, Grand Isle	41 min
Jul 24, 2:27 PM EDT	Severe Thunderstorm Warning	BTV	Addison	63 min
Jul 24, 2:58 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, Grand Isle	62 min
Jul 24, 3:05 PM EDT	Special Weather Statement	BTV	Caledonia	40 min
Jul 24, 3:10 PM EDT	Flash Flood Warning	BTV	Addison	3 hr
Jul 24, 3:28 PM EDT	Special Weather Statement	BTV	Addison	47 min
Jul 24, 11:58 AM EDT	Special Weather Statement	BTV	Essex	62 min
Jul 24, 12:41 PM EDT	Special Weather Statement	BTV	Franklin	64 min
Jul 24, 12:50 PM EDT	Severe Thunderstorm Warning	BTV	Essex	39 min
Jul 24, 12:51 PM EDT	Special Weather Statement	BTV	Franklin	54 min
Jul 24, 1:48 PM EDT	Special Weather Statement	BTV	Franklin	42 min
Jul 24, 3:03 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin	57 min
Jul 24, 3:05 PM EDT	Flash Flood Warning	BTV	Clinton	3 hr
Jul 24, 4:12 PM EDT	Special Weather Statement	BTV	Franklin	63 min
Jul 24, 4:36 PM EDT	Special Weather Statement	BTV	St. Lawrence	54 min
Jul 24, 5:20 PM EDT	Special Weather Statement	BTV	Franklin	55 min

Nearby

Flash Flood Warnings in Vermont, 2023 Flash Flood Warnings in New York, 2023 Every flash flood 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.