Alert archive / Vermont / Special Weather Statements in 2021

Special Weather Statement, NWS Burlington, VT

September 15, 2021Orleans County, Vermont

NWS Burlington, VT issued this special weather statement at Sep 15, 2021, 7:20 AM EDT for Orleans County, Vermont. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 15, 2021, 7:20 AM EDT (11:20 UTC)
Expired: Sep 15, 2021, 7:45 AM EDT
In force: 25 min
Issued by: NWS Burlington, VT
Hail: 0.25 in
Wind: 40

County Orleans County, VT

The radar

The Burlington radar (KCXX), 92 km from the middle of the area, began a volume at 11:22 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 00:00Z, 11.3 hours before the alert went out and 275 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: 291 J/kg
Mixed-layer CIN: -243 J/kg
Mixed-layer LCL: 985 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 293 m²/s²
0-3 km storm-relative helicity: 333 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 15, 4:22 AM EDT	Special Weather Statement	BTV	Grand Isle	23 min
Sep 15, 4:50 AM EDT	Special Weather Statement	BTV	Grand Isle	40 min
Sep 15, 5:33 AM EDT	Special Weather Statement	BTV	Chittenden, Franklin, Lamoille	42 min
Sep 15, 7:54 AM EDT	Special Weather Statement	BTV	Essex	36 min
Sep 15, 1:08 PM EDT	Special Weather Statement	BTV	Rutland	52 min
Sep 15, 1:15 PM EDT	Severe Thunderstorm Warning	BTV	Rutland, Windsor	60 min
Sep 15, 1:54 PM EDT	Special Weather Statement	BTV	Washington	66 min
Sep 15, 2:03 PM EDT	Special Weather Statement	BTV	Orange	27 min
Sep 15, 2:07 PM EDT	Severe Thunderstorm Warning	BTV	Rutland, Windsor	53 min
Sep 15, 2:23 PM EDT	Special Weather Statement	BTV	Lamoille	37 min
Sep 15, 2:32 PM EDT	Severe Thunderstorm Warning	BTV	Orange	34 min
Sep 15, 3:02 PM EDT	Severe Thunderstorm Warning	BTV	Windsor	28 min
Sep 15, 3:16 PM EDT	Special Weather Statement	BTV	Essex	29 min
Sep 15, 3:30 PM EDT	Special Weather Statement	BTV	Windsor	30 min
Sep 15, 3:38 AM EDT	Special Weather Statement	BTV	Franklin	37 min

Nearby

Special Weather Statements in Vermont, 2021 Every special weather statement in 2021

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.