Alert archive / Vermont / Areal Flood Warnings in 2022

Areal Flood Warning 21, NWS Burlington, VT

September 19, 2022Addison County, Chittenden County, Washington County, Vermont

NWS Burlington, VT issued this areal flood warning at Sep 19, 2022, 4:25 PM EDT for Addison County, Chittenden County, Washington County, Vermont. It was in force for 4 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
Sep 19, 2022, 4:25 PM EDT (20:25 UTC)
Expired
Sep 19, 2022, 8:30 PM EDT
In force
4 hr
Issued by
NWS Burlington, VT
Area
Storm-based polygon
Flood severity
None

Counties Addison County, VT, Chittenden County, VT, Washington County, VT

The radar

The Burlington radar (KCXX), 33 km from the middle of the area, began a volume at 20:27 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, 8.4 hours before the alert went out and 188 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 2022-09-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 79 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 2022-09-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 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
79 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
897 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 19, 3:05 PM EDTAreal Flood WarningBTVChittenden, Lamoille, Washington6 hr
Sep 19, 4:19 PM EDTFlash Flood WarningBTVRutland, Windsor4 hr
Sep 19, 4:31 PM EDTSpecial Weather StatementBTVRutland59 min
Sep 19, 5:27 PM EDTSpecial Weather StatementBTVWindsor48 min
Sep 19, 12:03 PM EDTAreal Flood WarningBTVSt. Lawrence4 hr

Nearby

Areal Flood Warnings in Vermont, 2022Every areal flood warning in 2022

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.