Alert archive / Vermont / Flash Flood Warnings in 2023

Flash Flood Warning 24, NWS Burlington, VT

July 10, 20238 counties in Vermont

NWS Burlington, VT issued this flash flood warning at Jul 10, 2023, 2:24 AM EDT for 8 counties in Vermont. It was in force for 12 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 10, 2023, 2:24 AM EDT (06:24 UTC)
Expired: Jul 10, 2023, 2:30 PM EDT
In force: 12 hr
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Flood severity: None

Counties Addison County, VT, Caledonia County, VT, Chittenden County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Washington County, VT, Windsor County, VT

The radar

The Burlington radar (KCXX), 52 km from the middle of the area, began a volume at 06:24 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

Brookhaven, NY (KOKX), launched 00:00Z, 6.4 hours before the alert went out and 380 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: 325 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 589 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 10, 1:47 AM EDT, 37 minutes earlier.

Area forecast discussion, Jul 10, 1:47 AM EDT, 37 minutes before

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Hazardous weather outlook, Jul 9, 3:27 AM EDT, 22 hours 57 minutes before

Hazardous Weather Outlook
National Weather Service Burlington VT
327 AM EDT Sun Jul 9 2023

NYZ026-029-087-100730-
Northern St. Lawrence-Southeastern St. Lawrence-
Southwestern St. Lawrence-
327 AM EDT Sun Jul 9 2023

This Hazardous Weather Outlook is for northern New York.

.DAY ONE...Today and tonight.

A few moderate to heavy showers and a few thunderstorms will be
possible across St. Lawrence County. However, flooding is not
expected at this time across St. Lawrence County.

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

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NYZ027-028-030-031-034-035-VTZ001>011-016>021-100730-
Northern Franklin-Eastern Clinton-Southern Franklin-Western Clinton-
Western Essex-Eastern Essex-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-
327 AM EDT Sun Jul 9 2023

...FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH MONDAY
EVENING...

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

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flood Watch.

Scattered showers and thunderstorms are likely to develop this
afternoon. These storms could produce heavy rainfall, frequent
lightning, and gusty winds.

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

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

 Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jul 9, 8:49 PM EDT, 5 hours 35 minutes before

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Local storm report, Jul 9, 9:25 PM EDT, 4 hours 59 minutes before

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Local storm report, Jul 9, 10:39 PM EDT, 3 hours 45 minutes before

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Local storm report, Jul 9, 10:43 PM EDT, 3 hours 41 minutes before

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Local storm report, Jul 10, 12:10 AM EDT, 2 hours 14 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 9, 11:25 PM EDT	Flash Flood Warning	BTV	Caledonia, Essex, Orleans	6 hr
Jul 10, 1:15 AM EDT	Flash Flood Warning Emergency	BTV	Addison, Orange, Rutland, Windsor	15 hr
Jul 10, 3:15 AM EDT	Areal Flood Warning	BTV	Addison, Rutland, Windsor	3 hr
Jul 10, 4:19 AM EDT	Flash Flood Warning	BTV	Addison, Chittenden	3 hr
Jul 10, 5:38 AM EDT	Flash Flood Warning	BTV	Caledonia, Essex, Franklin, Lamoille, Orleans	9 hr
Jul 10, 6:15 AM EDT	River Flood Warning	BTV	Rutland	68 hr
Jul 10, 7:03 AM EDT	Flash Flood Warning	BTV	Caledonia, Essex, Orange, Orleans, Washington, Windsor	9 hr
Jul 10, 7:20 AM EDT	Flash Flood Warning	BTV	Addison, Chittenden, Franklin, Lamoille	6 hr
Jul 10, 7:28 AM EDT	Flash Flood Warning	BTV	Orange, Windsor	6 hr
Jul 10, 8:52 AM EDT	River Flood Warning	BTV	Lamoille	41 hr
Jul 10, 9:13 AM EDT	River Flood Warning	BTV	Washington	14 hr
Jul 10, 9:14 AM EDT	River Flood Warning	BTV	Washington	42 hr
Jul 10, 11:26 AM EDT	River Flood Warning	BTV	Washington	35 hr
Jul 10, 11:28 AM EDT	River Flood Warning	BTV	Chittenden	58 hr
Jul 10, 11:37 AM EDT	River Flood Warning	BTV	Orleans	33 hr
Jul 10, 12:10 PM EDT	River Flood Warning	BTV	Windsor	15 hr
Jul 10, 2:25 PM EDT	Areal Flood Warning	BTV	Addison, Caledonia, Chittenden, Essex, Franklin, Lamoille and 4 more	20 hr
Jul 10, 4:03 PM EDT	Areal Flood Warning	BTV	Addison, Orange, Rutland, Windsor	6 hr
Jul 10, 4:42 PM EDT	River Flood Warning	BTV	Lamoille	47 hr
Jul 10, 6:00 PM EDT	Flash Flood Warning Considerable damage threat	BTV	Addison, Orange, Washington	3 hr
Jul 10, 6:30 PM EDT	River Flood Warning	BTV	Orleans	21 days

Nearby

Flash Flood Warnings in Vermont, 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.