Alert archive / Vermont / Flash Flood Warnings in 2011

Flash Flood Warning 38, NWS Albany, NY

September 4, 2011Washington County, New York; Bennington County, Windham County, Vermont

NWS Albany, NY issued this flash flood warning at Sep 4, 2011, 8:12 PM EDT for Washington County, New York; Bennington County, Windham County, Vermont. It was in force for 4 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
Sep 4, 2011, 8:12 PM EDT (00:12 UTC)
Expired
Sep 5, 2011, 12:15 AM EDT
In force
4 hr
Issued by
NWS Albany, NY
Area
Storm-based polygon
Flood severity
None

Counties Washington County, NY, Bennington County, VT, Windham County, VT

The radar

The Albany radar (KENX), 128 km from the middle of the area, began a volume at 00:14 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, 0.2 hours before the alert went out and 106 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 00:00Z on 2011-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 311 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 00:00Z on 2011-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 square meters per square second.193958Sfc1 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
311 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
1307 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

304 
WGUS51 KALY 050012
FFWALY
NYC115-VTC003-025-050415-
/O.NEW.KALY.FF.W.0038.110905T0012Z-110905T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ALBANY NY
812 PM EDT SUN SEP 4 2011

THE NATIONAL WEATHER SERVICE IN ALBANY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EXTREME EAST CENTRAL WASHINGTON COUNTY IN EAST CENTRAL NEW YORK...
  BENNINGTON COUNTY IN SOUTHERN VERMONT...
  THIS INCLUDES THE CITIES OF...MANCHESTER...BENNINGTON...
  ARLINGTON...
  WINDHAM COUNTY IN SOUTHERN VERMONT...
  THIS INCLUDES THE CITIES OF...TOWNSHEND...STRATTON...LONDONDERRY...
  BRATTLEBORO...BELLOWS FALLS...

* UNTIL 1215 AM EDT

* AT 810 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THAT THUNDERSTORMS HAD PRODUCE ONE TO TWO INCHES OF RAIN OVER
  PORTIONS OF BENNINGTON AND WINDHAM COUNTIES.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  SHAFTSBURY...WILMINGTON...WESTMINSTER...WEST WARDSBORO...SAXTONS
  RIVER...PUTNEY...NEWFANE...MANCHESTER CENTER AND DORSET

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE 
BETWEEN 815 PM AND 1000 PM IN THE WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

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.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY EMAIL AT
ALB.STORMREPORT@NOAA.GOV OR ON FACEBOOK AT
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.ALBANY.GOV.

&&

LAT...LON 4306 7246 4300 7244 4297 7247 4296 7252
      4290 7252 4288 7255 4281 7254 4276 7247
      4273 7246 4274 7327 4331 7326 4329 7281
      4326 7281 4323 7270 4324 7243 4315 7245
      4308 7243

$$

GJM
1 follow-up statement
946 
WGUS71 KALY 050417
FFSALY

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
1217 AM EDT MON SEP 5 2011

NYC115-VTC003-025-050427-
/O.EXP.KALY.FF.W.0038.000000T0000Z-110905T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BENNINGTON VT-WASHINGTON NY-WINDHAM VT-
1217 AM EDT MON SEP 5 2011

...THE FLASH FLOOD WARNING HAS EXPIRED FOR WINDHAM...EXTREME EAST
CENTRAL WASHINGTON AND BENNINGTON COUNTIES...

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY EMAIL AT
ALB.STORMREPORT@NOAA.GOV OR ON FACEBOOK AT
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.ALBANY.GOV

LAT...LON 4306 7246 4300 7244 4297 7247 4296 7252
      4290 7252 4288 7255 4281 7254 4276 7247
      4273 7246 4274 7327 4331 7326 4329 7281
      4326 7281 4323 7270 4324 7243 4315 7245
      4308 7243

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 8:40 PM EDTSpecial Weather StatementALYRensselaer35 min
Sep 4, 11:22 PM EDTSpecial Weather StatementALYColumbia38 min
Sep 4, 11:41 PM EDTFlash Flood WarningALYMontgomery, Schenectady, Schoharie6 hr
Sep 4, 11:58 PM EDTSpecial Weather StatementALYSchoharie32 min
Sep 5, 12:15 AM EDTSpecial Weather StatementALYColumbia30 min
Sep 5, 12:32 AM EDTFlash Flood WarningALYGreene, Schoharie6 hr
Sep 5, 1:09 AM EDTSpecial Weather StatementALYRensselaer51 min
Sep 5, 2:02 AM EDTSpecial Weather StatementALYColumbia, Greene43 min
Sep 5, 2:19 AM EDTFlash Flood WarningALYRensselaer, Washington6 hr
Sep 5, 2:45 AM EDTSpecial Weather StatementALYRensselaer45 min
Sep 4, 8:26 PM EDTSpecial Weather StatementALYWindham34 min
Sep 5, 1:41 AM EDTFlash Flood WarningALYBennington6 hr
Sep 5, 1:51 AM EDTSpecial Weather StatementALYBennington39 min
Sep 5, 3:29 AM EDTSpecial Weather StatementALYWindham61 min
Sep 5, 5:02 PM EDTAreal Flood AdvisoryALYWindham3 hr

Nearby

Flash Flood Warnings in Vermont, 2011Flash Flood Warnings in New York, 2011Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.