Alert archive / New York / Flash Flood Warnings in 2011

Flash Flood Warning 2, NWS Burlington, VT

April 28, 2011Franklin County, New York

NWS Burlington, VT issued this flash flood warning at Apr 28, 2011, 5:09 AM EDT for Franklin County, New York. It was in force for 6 hr. 1 report 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: Apr 28, 2011, 5:09 AM EDT (09:09 UTC)
Expired: Apr 28, 2011, 11:15 AM EDT
In force: 6 hr
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Flood severity: None

County Franklin County, NY

The radar

The Burlington radar (KCXX), 78 km from the middle of the area, began a volume at 09:12 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
Apr 28, 9:08 AM EDT	FLASH FLOOD	Duane Center, NY	SEVERAL ROADS CLOSED NEAR DUANE

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, 9.2 hours before the alert went out and 203 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: 108 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 777 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 307 m²/s²
0-3 km storm-relative helicity: 401 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

810 
WGUS51 KBTV 280909
FFWBTV
NYC033-281515-
/O.NEW.KBTV.FF.W.0002.110428T0909Z-110428T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
509 AM EDT THU APR 28 2011

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FRANKLIN COUNTY IN NORTHERN NEW YORK

* UNTIL 1115 AM EDT

* AT 506 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM PERSISTENT RAIN OVER THE WARNED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ST. REGIS
  FALLS...SANTA CLARA...RAINBOW LAKE...LOON LAKE...DUANE CENTER...
  CHASM FALLS...MADAWASKA...DEBAR MOUNTAIN...BRYANTS MILL AND ALDER
  BROOK

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...

ADDITIONAL RAINFALL AMOUNTS OF AROUND TWO INCHES ARE POSSIBLE IN
THE WARNED AREA.

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.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 4473 7399 4471 7399 4470 7396 4461 7395
      4454 7392 4443 7391 4441 7414 4414 7410
      4409 7453 4417 7454 4420 7453 4471 7461
      4483 7400

$$

NEILES

2 follow-up statements

325 
WGUS71 KBTV 281333
FFSBTV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
933 AM EDT THU APR 28 2011

NYC033-281515-
/O.CON.KBTV.FF.W.0002.000000T0000Z-110428T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FRANKLIN NY-
933 AM EDT THU APR 28 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 AM EDT FOR
FRANKLIN COUNTY IN NORTHERN NEW YORK...

AT 932 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORT SEVERAL ROADS 
CLOSED ACROSS FRANKLIN COUNTY FROM HEAVIER RAIN EARLIER THIS MORNING.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ST. REGIS
FALLS...SANTA CLARA...LOON LAKE...DUANE CENTER...CHASM FALLS...
MADAWASKA...DEBAR MOUNTAIN...BRYANTS MILL AND ALDER BROOK

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

&&

LAT...LON 4473 7399 4471 7399 4470 7396 4461 7395
      4454 7392 4443 7391 4441 7414 4414 7410
      4409 7453 4417 7454 4420 7453 4471 7461
      4483 7400

$$

LAHIFF

680 
WGUS71 KBTV 281511
FFSBTV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
1111 AM EDT THU APR 28 2011

NYC033-281520-
/O.EXP.KBTV.FF.W.0002.000000T0000Z-110428T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FRANKLIN NY-
1111 AM EDT THU APR 28 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1115 AM EDT FOR FRANKLIN
COUNTY IN NORTHERN NEW YORK...

OCCASIONAL SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS THE REGION 
THIS AFTERNOON AND EVENING WHICH WILL CONTINUE TO THE THREAT FOR 
FLASH FLOODING...THOUGH THE IMMEDIATE THREAT HAS DIMINISHED. A FLASH 
FLOOD WATCH REMAINS IN EFFECT ACROSS THE REGION THROUGH THIS EVENING.

LAT...LON 4473 7399 4471 7399 4470 7396 4461 7395
      4454 7392 4443 7391 4441 7414 4414 7410
      4409 7453 4417 7454 4420 7453 4471 7461
      4483 7400

$$

LAHIFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 9:52 PM EDT	River Flood Warning	BTV	Clinton, Essex	34 hr
Apr 27, 11:37 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Franklin	38 min
Apr 28, 5:25 AM EDT	Flash Flood Warning	BTV	Essex	6 hr
Apr 28, 6:29 AM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex	61 min
Apr 28, 10:12 AM EDT	High Wind Warning	BTV	Franklin, St. Lawrence	9 hr
Apr 28, 11:38 AM EDT	Areal Flood Warning	BTV	Franklin, St. Lawrence	24 hr
Apr 28, 12:04 PM EDT	River Flood Warning	BTV	Clinton, Franklin, St. Lawrence	21 hr
Apr 28, 12:42 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, St. Lawrence	63 min

Nearby

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.