Alert archive / Vermont / Flash Flood Warnings in 2021

Flash Flood Warning 24, NWS Albany, NY

August 1, 2021Bennington County, Windham County, Vermont

NWS Albany, NY issued this flash flood warning at Aug 1, 2021, 5:40 PM EDT for Bennington County, Windham County, Vermont. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 1, 2021, 5:40 PM EDT (21:40 UTC)
Expired: Aug 1, 2021, 8:45 PM EDT
In force: 3 hr
Issued by: NWS Albany, NY
Area: Storm-based polygon
Flood severity: None

Counties Bennington County, VT, Windham County, VT

The radar

The Albany radar (KENX), 108 km from the middle of the area, began a volume at 21:40 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, 9.7 hours before the alert went out and 86 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1357 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

908 
WGUS51 KALY 012140
FFWALY
VTC003-025-020045-
/O.NEW.KALY.FF.W.0024.210801T2140Z-210802T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Albany NY
540 PM EDT Sun Aug 1 2021

The National Weather Service in Albany has issued a

* Flash Flood Warning for...
  Central Bennington County in southern Vermont...
  Northwestern Windham County in southern Vermont...

* Until 845 PM EDT.

* At 540 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Additional rainfall amounts of 0.5 to 1 inch are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Stratton, West Wardsboro, Jamaica, Wardsboro, West Jamaica, Pikes 
  Falls, Stratton Mountain, Stocker Acres, Stratton Valley, Stratton 
  Acres, Rawsonville, Wardsboro Center, Winhall Station, East 
  Jamaica, West Townshend, Kelley Stand and Townshend Dam.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Please report flooding to the National Weather Service by email 
atALB.stormreport@noaa.gov... On Facebook at 
www.facebook.com/nwsalbany or twitter @nwsalbany.

&&

LAT...LON 4309 7307 4312 7296 4318 7274 4305 7269
      4298 7303

FLASH FLOOD...RADAR INDICATED

$$

Rathbun

1 follow-up statement

526 
WGUS71 KALY 020041
FFSALY

Flash Flood Statement
National Weather Service Albany NY
841 PM EDT Sun Aug 1 2021

VTC003-025-020051-
/O.EXP.KALY.FF.W.0024.000000T0000Z-210802T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bennington VT-Windham VT-
841 PM EDT Sun Aug 1 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 845 PM EDT THIS EVENING FOR 
CENTRAL BENNINGTON AND NORTHWESTERN WINDHAM COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 4309 7307 4312 7296 4318 7274 4305 7269
      4298 7303

$$

Rathbun

The office that day

Everything else NWS Albany, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 1, 3:18 AM EDT	Flash Flood Watch	ALY	Bennington, Windham	19 hr
Aug 1, 5:17 PM EDT	Special Weather Statement	ALY	Windham	28 min
Aug 1, 5:24 PM EDT	Areal Flood Advisory	ALY	Bennington, Windham	3 hr
Aug 1, 5:53 PM EDT	Special Weather Statement	ALY	Windham	37 min
Aug 1, 6:15 PM EDT	Flash Flood Warning	ALY	Windham	3 hr

Nearby

Flash Flood Warnings in Vermont, 2021 Every flash flood warning 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.