Alert archive / Vermont / Flash Flood Warnings in 2011

Flash Flood Warning 20, NWS Burlington, VT

June 9, 2011Addison County, Rutland County, Windsor County, Vermont; Essex County, New York

NWS Burlington, VT issued this flash flood warning at Jun 9, 2011, 4:49 AM EDT for Addison County, Rutland County, Windsor County, Vermont; Essex County, New York. It was in force for 3 hr. 2 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: Jun 9, 2011, 4:49 AM EDT (08:49 UTC)
Expired: Jun 9, 2011, 7:19 AM EDT
In force: 3 hr
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Flood severity: None

Counties Essex County, NY, Addison County, VT, Rutland County, VT, Windsor County, VT

The radar

The Burlington radar (KCXX), 105 km from the middle of the area, began a volume at 08:51 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
Jun 9, 6:00 AM EDT	FLASH FLOOD	2 Sw Shoreham, VT	5 FT DIAMETER CULVERT WASHED OUT AND WATER 1 FT OVER JENISON ROAD
Jun 9, 6:00 AM EDT	FLASH FLOOD	Shoreham, VT	PART OF SCHOOL STREET FLOODED

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 00:00Z, 8.8 hours before the alert went out and 114 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: 3772 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 1390 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 10.5

Open this sounding in Storm Lab

The text

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

741 
WGUS51 KBTV 090849
FFWBTV
NYC031-VTC001-021-027-091245-
/O.NEW.KBTV.FF.W.0020.110609T0849Z-110609T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
449 AM EDT THU JUN 9 2011

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN ADDISON COUNTY IN CENTRAL VERMONT
  SOUTHEASTERN ESSEX COUNTY IN NORTHERN NEW YORK
  RUTLAND COUNTY IN SOUTHERN VERMONT
  WESTERN WINDSOR COUNTY IN SOUTHERN VERMONT

* UNTIL 845 AM EDT

* AT 442 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  UNDERWOOD...TICONDEROGA...PARADOX...MORIAH...MINEVILLE...CROWN
  POINT CENTER...SHOREHAM...SALISBURY...LEICESTER...CORNWALL...
  BRIDPORT...WHITING...NORTH HUDSON AND CROWN POINT

* THIS REPLACES THE FLOOD ADVISORY.

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...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 4325 7281 4330 7284 4330 7294 4358 7330
      4362 7331 4362 7336 4367 7342 4379 7336
      4380 7344 4378 7357 4392 7376 4414 7365
      4375 7262 4346 7250 4323 7259 4322 7270

$$

1 follow-up statement

295 
WGUS71 KBTV 091119
FFSBTV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
719 AM EDT THU JUN 9 2011

NYC031-VTC001-021-027-091129-
/O.CAN.KBTV.FF.W.0020.000000T0000Z-110609T1245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINDSOR VT-ESSEX NY-ADDISON VT-RUTLAND VT-
719 AM EDT THU JUN 9 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN ESSEX
COUNTY IN NORTHERN NEW YORK...AND SOUTHWESTERN ADDISON COUNTY IN
CENTRAL VERMONT...AND RUTLAND AND WESTERN WINDSOR COUNTIES IN
SOUTHERN VERMONT...

THE THREAT FOR HEAVY RAINFALL AND FLASH FLOODING HAS ENDED.

LAT...LON 4325 7281 4330 7284 4330 7294 4358 7330
      4362 7331 4362 7336 4367 7342 4379 7336
      4380 7344 4378 7357 4392 7376 4414 7365
      4375 7262 4346 7250 4323 7259 4322 7270

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 8:14 PM EDT	Severe Thunderstorm Warning	BTV	Essex, Orleans	46 min
Jun 9, 2:56 AM EDT	Special Weather Statement	BTV	Addison, Chittenden, Rutland, Windsor	64 min
Jun 9, 4:15 AM EDT	Special Weather Statement	BTV	Addison, Chittenden, Franklin, Grand Isle, Lamoille, Rutland and 2 more	60 min
Jun 9, 4:41 AM EDT	Areal Flood Advisory	BTV	Addison, Rutland, Windsor	9 min
Jun 9, 5:08 AM EDT	Special Weather Statement	BTV	Lamoille, Orange, Washington	67 min
Jun 9, 8:16 AM EDT	Severe Thunderstorm Warning	BTV	Addison, Rutland, Windsor	59 min
Jun 9, 8:38 AM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Essex, Orleans	52 min
Jun 9, 9:12 AM EDT	Severe Thunderstorm Warning	BTV	Rutland, Windsor	48 min
Jun 9, 9:28 AM EDT	Severe Thunderstorm Warning	BTV	Addison, Chittenden, Orange, Rutland, Washington, Windsor	62 min
Jun 9, 1:49 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Rutland, Windsor	56 min
Jun 9, 1:57 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Orange, Washington, Windsor	53 min
Jun 9, 2:41 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Chittenden, Lamoille, Orange, Orleans, Washington	45 min
Jun 9, 2:42 PM EDT	Severe Thunderstorm Warning	BTV	Rutland, Windsor	48 min
Jun 9, 5:15 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Chittenden, Washington	60 min
Jun 9, 6:11 PM EDT	Severe Thunderstorm Warning	BTV	Addison, Chittenden, Rutland, Windsor	49 min
Jun 9, 7:24 PM EDT	Special Weather Statement	BTV	Rutland, Windsor	51 min
Jun 8, 9:28 PM EDT	Severe Thunderstorm Warning	BTV	St. Lawrence	62 min
Jun 9, 1:47 AM EDT	Special Weather Statement	BTV	Clinton, Essex, Franklin	58 min
Jun 9, 7:10 AM EDT	Special Weather Statement	BTV	Essex	65 min
Jun 9, 12:09 PM EDT	Severe Thunderstorm Warning	BTV	Essex	66 min
Jun 9, 4:41 PM EDT	Severe Thunderstorm Warning	BTV	St. Lawrence	64 min

Nearby

Flash Flood Warnings in Vermont, 2011 Flash Flood Warnings in New York, 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.