Alert archive / New York / Flash Flood Warnings in 2016

Flash Flood Warning 1, NWS Buffalo, NY

May 29, 2016Livingston County, Monroe County, Ontario County, New York

NWS Buffalo, NY issued this flash flood warning at May 29, 2016, 6:41 PM EDT for Livingston County, Monroe County, Ontario County, New York. It was in force for 3 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: May 29, 2016, 6:41 PM EDT (22:41 UTC)
Expired: May 29, 2016, 9:45 PM EDT
In force: 3 hr
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Flood severity: None

Counties Livingston County, NY, Monroe County, NY, Ontario County, NY

The radar

The Buffalo radar (KBUF), 81 km from the middle of the area, began a volume at 22:42 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
May 29, 7:20 PM EDT	FLASH FLOOD	2 Ne Geneseo, NY	LARGE CULVERT ON LIMA RD PARTIALLY WASHED OUT

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.7 hours before the alert went out and 77 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: 316 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 1116 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

649 
WGUS51 KBUF 292241
FFWBUF
NYC051-055-069-300145-
/O.NEW.KBUF.FF.W.0001.160529T2241Z-160530T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
641 PM EDT SUN MAY 29 2016

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN ONTARIO COUNTY IN WESTERN NEW YORK...
  CENTRAL LIVINGSTON COUNTY IN WESTERN NEW YORK...
  SOUTH CENTRAL MONROE COUNTY IN WESTERN NEW YORK...

* UNTIL 945 PM EDT

* AT 640 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  GENESEO...LETCHWORTH STATE PARK...AVON...MOUNT MORRIS...HONEOYE FALLS...
  CONESUS...BRISTOL AND LIMA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 4266 7796 4284 7795 4295 7777 4301 7745
      4283 7739 4261 7791

$$

WOOD

2 follow-up statements

258 
WGUS71 KBUF 300011
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
811 PM EDT SUN MAY 29 2016

NYC051-055-069-300145-
/O.CON.KBUF.FF.W.0001.000000T0000Z-160530T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ONTARIO NY-LIVINGSTON NY-MONROE NY-
811 PM EDT SUN MAY 29 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT FOR
NORTHWESTERN ONTARIO...CENTRAL LIVINGSTON AND SOUTH CENTRAL MONROE
COUNTIES...

AS OF 808 PM EDT...DOPPLER RADAR INDICATED UP TO THREE INCHES OF
RAIN HAVE ALREADY FALLEN ACROSS THE WARNED AREA. WHILE RAINFALL HAS
TAPERED OFF OVER THE LAST HOUR...ANOTHER LINE OF SHOWERS AND
EMBEDDED THUNDERSTORMS IS MOVING INTO THE WARNED AREA. FLASH
FLOODING IS STILL POSSIBLE ACROSS THE WARNED AREA.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
GENESEO...LETCHWORTH STATE PARK...AVON...MOUNT MORRIS...HONEOYE FALLS...
CONESUS...BRISTOL AND LIMA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 4266 7796 4284 7795 4295 7777 4301 7745
      4283 7739 4261 7791

$$

WOOD

760 
WGUS71 KBUF 300115
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
915 PM EDT SUN MAY 29 2016

NYC051-055-069-300125-
/O.CAN.KBUF.FF.W.0001.000000T0000Z-160530T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ONTARIO NY-LIVINGSTON NY-MONROE NY-
915 PM EDT SUN MAY 29 2016

...THE FLASH FLOOD WARNING FOR NORTHWESTERN ONTARIO...CENTRAL
LIVINGSTON AND SOUTH CENTRAL MONROE COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4266 7796 4284 7795 4295 7777 4301 7745
      4283 7739 4261 7791

$$

WOOD

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 12:59 PM EDT	Special Weather Statement	BUF	Allegany	31 min
May 29, 1:15 PM EDT	Special Weather Statement	BUF	Ontario, Wayne	45 min
May 29, 1:43 PM EDT	Special Weather Statement	BUF	Allegany	32 min
May 29, 2:03 PM EDT	Special Weather Statement	BUF	Ontario, Wayne	42 min
May 29, 2:39 PM EDT	Special Weather Statement	BUF	Lewis	51 min
May 29, 2:49 PM EDT	Special Weather Statement	BUF	Ontario	26 min
May 29, 3:09 PM EDT	Special Weather Statement	BUF	Oswego	36 min
May 29, 3:19 PM EDT	Special Weather Statement	BUF	Ontario	56 min
May 29, 3:37 PM EDT	Special Weather Statement	BUF	Lewis	23 min
May 29, 4:17 PM EDT	Special Weather Statement	BUF	Livingston	28 min
May 29, 4:30 PM EDT	Special Weather Statement	BUF	Monroe	30 min
May 29, 4:40 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario	35 min
May 29, 5:06 PM EDT	Special Marine Warning	BUF		54 min
May 29, 5:16 PM EDT	Special Weather Statement	BUF	Ontario	44 min
May 29, 5:27 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	21 min

Nearby

Flash Flood Warnings in New York, 2016 Every flash flood warning in 2016

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.