Alert archive / Vermont / Flash Flood Warnings in 2012

Flash Flood Warning 4, NWS Burlington, VT

August 4, 20124 counties in Vermont

NWS Burlington, VT issued this flash flood warning at Aug 4, 2012, 4:15 PM EDT for 4 counties in Vermont. It was in force for 100 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
Aug 4, 2012, 4:15 PM EDT (20:15 UTC)
Expired
Aug 4, 2012, 5:55 PM EDT
In force
100 min
Issued by
NWS Burlington, VT
Area
Storm-based polygon
Flood severity
None

Counties Addison County, VT, Orange County, VT, Rutland County, VT, Windsor County, VT

The radar

The Burlington radar (KCXX), 127 km from the middle of the area, began a volume at 20:16 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, 8.3 hours before the alert went out and 111 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 2012-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1175 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 2012-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.1939Sfc1 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
1175 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
1047 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
65 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.

744 
WGUS51 KBTV 042015
FFWBTV
VTC001-017-021-027-050215-
/O.NEW.KBTV.FF.W.0004.120804T2015Z-120805T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
415 PM EDT SAT AUG 4 2012

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ADDISON COUNTY IN CENTRAL VERMONT
  EXTREME WEST CENTRAL ORANGE COUNTY IN CENTRAL VERMONT
  EASTERN RUTLAND COUNTY IN SOUTHERN VERMONT
  WESTERN WINDSOR COUNTY IN SOUTHERN VERMONT

* UNTIL 1015 PM EDT

* AT 405 PM 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...AND ROAD
  WASHOUTS ARE POSSIBLE. CITY STREETS MAY BECOME INUNDATED WITH
  RUSHING WATER...AND HOMES AND BUSINESSES IN FLOOD PRONE AREAS MAY
  BE AFFECTED BY FLOOD WATERS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DANBY...
  RANDOLPH AND RUTLAND.

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 4325 7281 4329 7282 4330 7284 4330 7296
      4329 7299 4330 7300 4331 7307 4396 7307
      4396 7263 4322 7262 4322 7270

$$

NEILES
1 follow-up statement
468 
WGUS71 KBTV 042155
FFSBTV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
555 PM EDT SAT AUG 4 2012

VTC001-017-021-027-042205-
/O.CAN.KBTV.FF.W.0004.000000T0000Z-120805T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINDSOR VT-ORANGE VT-ADDISON VT-RUTLAND VT-
555 PM EDT SAT AUG 4 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EASTERN RUTLAND...
SOUTHEASTERN ADDISON...WEST CENTRAL ORANGE AND WESTERN WINDSOR
COUNTIES...

WHILE THE FLASH FLOOD THREAT HAS ENDED...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 4325 7281 4329 7282 4330 7284 4330 7296
      4329 7299 4330 7300 4331 7307 4396 7307
      4396 7263 4322 7262 4322 7270

$$

NEILES

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 2:53 PM EDTSpecial Weather StatementBTVRutland67 min
Aug 4, 5:00 PM EDTSpecial Weather StatementBTVLamoille60 min

Nearby

Flash Flood Warnings in Vermont, 2012Every flash flood warning in 2012

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.