Alert archive / New York / Flash Flood Warnings in 2011

Flash Flood Warning 3, NWS Burlington, VT

April 28, 2011Essex County, New York

NWS Burlington, VT issued this flash flood warning at Apr 28, 2011, 5:25 AM EDT for Essex County, New York. It was in force for 6 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: Apr 28, 2011, 5:25 AM EDT (09:25 UTC)
Expired: Apr 28, 2011, 11:30 AM EDT
In force: 6 hr
Issued by: NWS Burlington, VT
Area: Storm-based polygon
Flood severity: None

County Essex County, NY

The radar

The Burlington radar (KCXX), 95 km from the middle of the area, began a volume at 09:26 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, 8:57 AM EDT	FLASH FLOOD	Minerva, NY	NUMEROUS ROADS CLOSED THROUGHOUT THE COUNTY
Apr 28, 9:23 AM EDT	FLASH FLOOD	Keene, NY	30 MILE SECTION OF ROUTE 73 IS CLOSED FROM KEENE TO INTERSTATE 87

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, 9.4 hours before the alert went out and 145 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.

207 
WGUS51 KBTV 280925
FFWBTV
NYC031-281530-
/O.NEW.KBTV.FF.W.0003.110428T0925Z-110428T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN ESSEX COUNTY IN NORTHERN NEW YORK

* UNTIL 1130 AM EDT

* AT 524 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
  WILMINGTON...UPPER JAY...RAY BROOK...NEWCOMB...LAKE PLACID...KEENE
  VALLEY...KEENE AND MOUNT MARCY

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 4379 7406 4382 7415 4381 7422 4392 7434
      4397 7426 4412 7429 4414 7410 4441 7414
      4444 7370 4377 7374 4374 7405

$$

NEILES

2 follow-up statements

589 
WGUS71 KBTV 281331
FFSBTV

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

NYC031-281530-
/O.CON.KBTV.FF.W.0003.000000T0000Z-110428T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESSEX NY-
931 AM EDT THU APR 28 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 AM EDT FOR
WESTERN ESSEX COUNTY IN NORTHERN NEW YORK...

AT 926 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED WIDESPREAD 
ROADS CLOSED ACROSS PORTIONS OF ESSEX COUNTY DUE TO HEAVY RAIN FROM 
EARLIER THIS MORNING.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WILMINGTON...
UPPER JAY...RAY BROOK...LAKE PLACID...KEENE VALLEY...KEENE AND MOUNT
MARCY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CONTINUE TO 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 4379 7406 4382 7415 4381 7422 4392 7434
      4397 7426 4412 7429 4414 7410 4441 7414
      4444 7370 4377 7374 4374 7405

$$

LAHIFF

153 
WGUS71 KBTV 281525
FFSBTV

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
1125 AM EDT THU APR 28 2011

NYC031-281535-
/O.EXP.KBTV.FF.W.0003.000000T0000Z-110428T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESSEX NY-
1125 AM EDT THU APR 28 2011

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1130 AM EDT FOR WESTERN
ESSEX 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 4379 7406 4382 7415 4381 7422 4392 7434
      4397 7426 4412 7429 4414 7410 4441 7414
      4444 7370 4377 7374 4374 7405

$$

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, 5:09 AM EDT	Flash Flood Warning	BTV	Franklin	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.