Alert archive / Vermont / Flash Flood Warnings in 2011

Flash Flood Warning 26, NWS Burlington, VT

August 28, 2011Addison County, Orange County, Washington County, Vermont

NWS Burlington, VT issued this flash flood warning at Aug 28, 2011, 11:41 AM EDT for Addison County, Orange County, Washington County, Vermont. It was in force for 9 hr. 22 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 28, 2011, 11:41 AM EDT (15:41 UTC)
Expired: Aug 28, 2011, 8:24 PM EDT
In force: 9 hr
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Flood severity: None

Counties Addison County, VT, Orange County, VT, Washington County, VT

The radar

The Burlington radar (KCXX), 55 km from the middle of the area, began a volume at 15:41 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.

What was reported inside it

Time	Report	Where	Remark
Aug 28, 3:05 PM EDT	FLASH FLOOD	Roxbury, VT	WATER RESCUES ONGOING IN ROXBURY ON OXBOW HILL AND THURSTON HILL ROADS
Aug 28, 3:11 PM EDT	FLOOD	Northfield, VT	DOG RIVER OVER ITS BANKS. WATER RUSHING INTO RESIDENTIAL BASEMENT ON DOGWOOD GLEN DR.
Aug 28, 3:11 PM EDT	FLASH FLOOD	Northfield, VT	DOG RIVER OVER ITS BANKS. WATER RUSHING INTO RESIDENTIAL BASEMENT ON DOGWOOD GLEN DR.
Aug 28, 3:46 PM EDT	HEAVY RAIN 4.8	Orwell, VT	4.8 INCHES SINCE 3AM
Aug 28, 4:15 PM EDT	FLASH FLOOD	Riverton, VT	WATER OVER RTE 12 BETWEEN MONTPELIER AND RIVERTON
Aug 28, 4:17 PM EDT	HEAVY RAIN 3.6	Waterbury Center, VT
Aug 28, 4:20 PM EDT	FLASH FLOOD	4 S Montpelier, VT	DOG RIVER HAS SPILLED OVER ITS BANKS AND RTE 12 SOUTH OF MONTPELIER
Aug 28, 4:22 PM EDT	FLASH FLOOD	Barre, VT	GRANITE STREET IS UNDER WATER. BASEMENTS ARE FLOODING.
Aug 28, 4:24 PM EDT	FLASH FLOOD	Ripton, VT	RTE 125 CLOSED FROM RIPTON WEST TO EAST MIDDLEBURY
Aug 28, 4:25 PM EDT	FLASH FLOOD	East Middlebury, VT	RTE 125 CLOSED FROM HANCOCK TO RTES 100 AND 7. PEOPLE ARE BEING EVACUATED.
Aug 28, 4:50 PM EDT	FLASH FLOOD	Waitsfield, VT	BRIDGE ST HAS FLOODED
Aug 28, 4:50 PM EDT	HEAVY RAIN 3.49	South Newbury, VT
Aug 28, 5:00 PM EDT	FLASH FLOOD	Strafford, VT	ROADS AND BRIDGE WASHED OUT LEAVING RESIDENTS STRANDED.
Aug 28, 5:54 PM EDT	FLASH FLOOD	Post Mills, VT	WATER FROM OMPOMPANOOSUC RIVER COVERING PART OF STATE RTE 113 IN POST MILLS
Aug 28, 6:15 PM EDT	HEAVY RAIN 5.75	Warren, VT
Aug 28, 6:35 PM EDT	HEAVY RAIN 5.25	Chelsea, VT
Aug 28, 6:45 PM EDT	HEAVY RAIN 4.72	Orwell, VT
Aug 28, 6:47 PM EDT	FLASH FLOOD	Northfield, VT	TRAIN TRACKS COMPLETELY WASHED OUT
Aug 28, 7:37 PM EDT	HEAVY RAIN 4.4	Waterbury Center, VT
Aug 28, 7:50 PM EDT	HEAVY RAIN 4.46	1 Se Berlin, VT	ASOS STORM TOTAL
Aug 28, 8:02 PM EDT	HEAVY RAIN 7.15	Randolph Center, VT	TRAINED SPOTTER
Aug 28, 8:26 PM EDT	FLASH FLOOD	Berlin, VT	5 FEET OF WATER IN WESTIN TRAILOR PARK. INHABITANTS ARE BEING EVACUATED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 3.7 hours before the alert went out and 179 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: 485 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 805 m²/s²
0-3 km storm-relative helicity: 1072 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

126 
WGUS51 KBTV 281541
FFWBTV
VTC001-017-023-282145-
/O.NEW.KBTV.FF.W.0026.110828T1541Z-110828T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
1141 AM EDT SUN AUG 28 2011

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADDISON COUNTY IN CENTRAL VERMONT
  ORANGE COUNTY IN CENTRAL VERMONT
  WASHINGTON COUNTY IN CENTRAL VERMONT

* UNTIL 545 PM EDT SUNDAY

* AT 1133 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAINFALL CAPABLE OF PRODUCING FLASH FLOODING. SMALL CREEKS
  AND STREAMS WILL QUICKLY LEAVE THEIR BANKS. CULVERTS...BRIDGES...
  AND ROADSIDE DITCHES WILL BE OVERWHELMED BY WATER. ROAD WASHOUTS
  ARE LIKELY. ONE TO THREE INCHES OF RAIN HAS FALLEN OVER THE AREA 
  THIS MORNING. ANOTHER 2 TO 3 INCHES IS EXPECTED THROUGH THIS 
  AFTERNOON.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BARRE...
  MIDDLEBURY...MONTPELIER...RANDOLPH AND VERGENNES.

IF YOU ENCOUNTER FLOODING...SEEK HIGHER GROUND IMMEDIATELY. WHEN YOU
CAN DO SO SAFELY PLEASE REPORT ANY FLOODING TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1 800 8 6 3 4 2 7 9...OR BY SUBMITTING
A STORM REPORT AT WEATHER.GOV/BURLINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY FROM FLOOD WATERS. MOVE TO HIGHER GROUND IF YOU ARE
THREATENED BY FLOODING OR ARE DIRECTED BY EMERGENCY OFFICIALS. DO NOT
DRIVE INTO AREAS WHERE THE WATER COVERS THE ROADWAY...THE ROAD MAY BE
WASHED AWAY BENEATH THE WATER SURFACE...AND IT ONLY TAKES A FEW
INCHES OF FLOWING WATER TO CARRY AWAY YOUR VEHICLE. MOST FLOOD DEATHS
OCCUR IN AUTOMOBILES...MAKE THE SMART CHOICE...TURN AROUND...DONT
DROWN.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING...
AND IMMEDIATE ACTION MUST BE TAKEN TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 4377 7221 4396 7280 4386 7287 4381 7300
      4385 7303 4384 7322 4377 7321 4376 7336
      4405 7344 4427 7331 4430 7298 4416 7295
      4445 7280 4440 7266 4448 7259 4443 7250
      4451 7243 4442 7222 4420 7237 4413 7203

$$

NF

3 follow-up statements

847 
WGUS51 KBTV 282056
FFWBTV
VTC001-017-023-290145-
/O.EXT.KBTV.FF.W.0026.000000T0000Z-110829T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
456 PM EDT SUN AUG 28 2011

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  ADDISON COUNTY IN CENTRAL VERMONT
  ORANGE COUNTY IN CENTRAL VERMONT
  WASHINGTON COUNTY IN CENTRAL VERMONT

* UNTIL 945 PM EDT

* AT 453 PM EDT...FLASH FLOODING WAS REPORTED BY LAW ENFORCEMENT. 
  WATER RESCUES WERE REPORTED NEAR ROXBURY IN WASHINGTON COUNTY. 
  NUMEROUS ROADS ARE CLOSED OR WASHED OUT. 3 TO 5 INCHES OF RAIN 
  HAS BEEN REPORTED WITH AN ADDITIONAL 1 TO 2 INCHES POSSIBLE 
  THROUGH THE EVENING. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BARRE...
  MIDDLEBURY...MONTPELIER AND VERGENNES.

IF YOU ENCOUNTER FLOODING...SEEK HIGHER GROUND IMMEDIATELY. WHEN YOU
CAN DO SO SAFELY PLEASE REPORT ANY FLOODING TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1 800 8 6 3 4 2 7 9...OR BY SUBMITTING
A STORM REPORT AT WEATHER.GOV/BURLINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY FROM FLOOD WATERS. MOVE TO HIGHER GROUND IF YOU ARE
THREATENED BY FLOODING OR ARE DIRECTED BY EMERGENCY OFFICIALS. DO NOT
DRIVE INTO AREAS WHERE THE WATER COVERS THE ROADWAY...THE ROAD MAY BE
WASHED AWAY BENEATH THE WATER SURFACE...AND IT ONLY TAKES A FEW
INCHES OF FLOWING WATER TO CARRY AWAY YOUR VEHICLE. MOST FLOOD DEATHS
OCCUR IN AUTOMOBILES...MAKE THE SMART CHOICE...TURN AROUND...DONT
DROWN.

THIS IS A LIFE THREATENING SITUATION. BE ESPECIALLY ALERT FOR SUDDEN
AND RAPID RISES OF SMALL CREEKS AND STREAMS...AND BE READY TO MOVE TO
HIGHER GROUND IF YOU OBSERVE FLOODING OR ARE DIRECTED TO EVACUATE BY
EMERGENCY OFFICIALS. NEVER TRY TO WALK OR DRIVE ACROSS A FLOODED
ROAD...IF YOUR VEHICLE BECOMES STRANDED ABANDON IT IMMEDIATELY AND
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING...
AND IMMEDIATE ACTION MUST BE TAKEN TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 4377 7221 4396 7280 4386 7287 4381 7300
      4385 7303 4384 7322 4377 7321 4376 7336
      4405 7344 4427 7331 4430 7298 4416 7295
      4445 7280 4440 7266 4448 7259 4443 7250
      4451 7243 4442 7222 4420 7237 4413 7203

$$

NF

416 
WGUS71 KBTV 282332
FFSBTV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
732 PM EDT SUN AUG 28 2011

VTC001-017-023-290145-
/O.CON.KBTV.FF.W.0026.000000T0000Z-110829T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ORANGE VT-WASHINGTON VT-ADDISON VT-
732 PM EDT SUN AUG 28 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT FOR
ADDISON...WASHINGTON AND ORANGE COUNTIES...

RECENT INFORMATION HAS BEEN RECEIVED THAT UNCONTROLLED RELEASES ARE 
OCCURING AT THE MARSHFIELD DAM NEAR MARSHFIELD IN WASHINGTON COUNTY. 
AS A RESULT EVACUATIONS MAY BE NECESSARY. 

WIDESPREAD FLASH FLOODING CONTINUES ACROSS THE REST OF WARNED AREA. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BARRE...
MIDDLEBURY...MONTPELIER AND VERGENNES.

IF YOU ENCOUNTER FLOODING...SEEK HIGHER GROUND IMMEDIATELY. WHEN YOU
CAN DO SO SAFELY PLEASE REPORT ANY FLOODING TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1 800 8 6 3 4 2 7 9...OR BY SUBMITTING
A STORM REPORT AT WEATHER.GOV/BURLINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY FROM FLOOD WATERS. MOVE TO HIGHER GROUND IF YOU ARE
THREATENED BY FLOODING OR ARE DIRECTED BY EMERGENCY OFFICIALS. DO NOT
DRIVE INTO AREAS WHERE THE WATER COVERS THE ROADWAY...THE ROAD MAY BE
WASHED AWAY BENEATH THE WATER SURFACE...AND IT ONLY TAKES A FEW
INCHES OF FLOWING WATER TO CARRY AWAY YOUR VEHICLE. MOST FLOOD DEATHS
OCCUR IN AUTOMOBILES...MAKE THE SMART CHOICE...TURN AROUND...DONT
DROWN.

THIS IS A LIFE THREATENING SITUATION. BE ESPECIALLY ALERT FOR SUDDEN
AND RAPID RISES OF SMALL CREEKS AND STREAMS...AND BE READY TO MOVE TO
HIGHER GROUND IF YOU OBSERVE FLOODING OR ARE DIRECTED TO EVACUATE BY
EMERGENCY OFFICIALS. NEVER TRY TO WALK OR DRIVE ACROSS A FLOODED
ROAD...IF YOUR VEHICLE BECOMES STRANDED ABANDON IT IMMEDIATELY AND
MOVE TO HIGHER GROUND.

&&

LAT...LON 4377 7221 4396 7280 4386 7287 4381 7300
      4385 7303 4384 7322 4377 7321 4376 7336
      4405 7344 4427 7331 4430 7298 4416 7295
      4445 7280 4440 7266 4448 7259 4443 7250
      4451 7243 4442 7222 4420 7237 4413 7203

$$

NF

243 
WGUS71 KBTV 290024
FFSBTV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
824 PM EDT SUN AUG 28 2011

VTC001-017-023-290033-
/O.CAN.KBTV.FF.W.0026.000000T0000Z-110829T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ORANGE VT-WASHINGTON VT-ADDISON VT-
824 PM EDT SUN AUG 28 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR ADDISON...
WASHINGTON AND ORANGE COUNTIES...

WHILE THE FLASH FLOOD THREAT HAS ENDED...WIDESPREAD FLOODING 
CONTINUES ACROSS THE AREA AND AN AREAL FLOOD WARNING HAS BEEN 
ISSUED. THE HAZARDS CREATED BY FLOODING WILL REMAIN. STREAMS WILL 
CONTINUE TO RUN HIGH...AND ROADS...BRIDGES AND CULVERTS MAY HAVE 
BEEN WASHED OUT. OBEY ALL ROAD CLOSURE SIGNS...THEY ARE THERE FOR 
YOUR SAFETY...AND DO NOT DRIVE THROUGH DAMAGED AREAS.

LAT...LON 4377 7221 4396 7280 4386 7287 4381 7300
      4385 7303 4384 7322 4377 7321 4376 7336
      4405 7344 4427 7331 4430 7298 4416 7295
      4445 7280 4440 7266 4448 7259 4443 7250
      4451 7243 4442 7222 4420 7237 4413 7203

$$

NF

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 9:38 AM EDT	Flash Flood Warning	BTV	Rutland, Windsor	11 hr
Aug 28, 12:14 PM EDT	River Flood Warning	BTV	Rutland	67 hr
Aug 28, 2:50 PM EDT	Flash Flood Warning	BTV	Addison, Chittenden, Franklin, Grand Isle, Lamoille, Washington	6 hr
Aug 28, 2:55 PM EDT	Areal Flood Advisory	BTV	Caledonia, Essex, Franklin, Lamoille, Orleans	3 hr
Aug 28, 5:11 PM EDT	River Flood Warning	BTV	Windsor	15 hr
Aug 28, 5:11 PM EDT	River Flood Warning	BTV	Orleans	24 hr
Aug 28, 5:19 PM EDT	River Flood Warning	BTV	Washington	11 hr
Aug 28, 5:41 PM EDT	Areal Flood Warning	BTV	Caledonia, Essex, Franklin, Lamoille, Orleans	14 hr
Aug 28, 5:44 PM EDT	River Flood Warning	BTV	Caledonia	22 hr
Aug 28, 5:52 PM EDT	River Flood Warning	BTV	Lamoille	24 hr
Aug 28, 6:56 PM EDT	River Flood Warning	BTV	Chittenden	37 hr
Aug 28, 7:04 PM EDT	River Flood Warning	BTV	Franklin	19 hr

Nearby

Flash Flood Warnings in Vermont, 2011 Every flash flood warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.