Alert archive / New York / Flash Flood Warnings in 2004

Flash Flood Warning 8, NWS Buffalo, NY

May 22, 2004Livingston County, Ontario County, New York

NWS Buffalo, NY issued this flash flood warning at May 22, 2004, 10:02 PM EDT for Livingston County, Ontario County, New York. 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: May 22, 2004, 10:02 PM EDT (02:02 UTC)
Expired: May 23, 2004, 2:00 AM EDT
In force: 4 hr
Issued by: NWS Buffalo, NY
Area: Counties, with a storm outline in the text

Counties Livingston County, NY, Ontario County, NY

The radar

The Buffalo radar (KBUF), 96 km from the middle of the area, began a volume at 02:04 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.0 hours before the alert went out and 93 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: 1116 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 993 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 216 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KBUF 230208
FFWBUF
NYC051-069-230600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1002 PM EDT SAT MAY 22 2004

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ONTARIO COUNTY IN WESTERN NEW YORK
  LIVINGSTON COUNTY IN WESTERN NEW YORK

* UNTIL 200 AM EDT SUNDAY

* AT 10 PM EDT...A LARGE AREA OF SHOWERS AND THUNDERSTORMS WAS      
  MOVING INTO WESTERN NEW YORK WITH THE LEADING EDGE FROM BATAVIA TO 
  DUNKIRK. THIS AREA WAS MOVING SOUTHEAST AT 35 MPH. 

* THIS ACTIVITY WILL REACH LIVINGSTON COUNTY BY 1030 PM AND ONTARIO  
  COUNTY BETWEEN 11 AND 1130 PM. IT WILL LAST ONE TO TWO HOURS AND   
  DROP AT LEAST ANOTHER INCH OF RAIN. MUCH OF THIS AREA RECEIVED     
  OVER AN INCH OF RAIN FROM THUNDERSTORMS EARLIER THIS EVENING AND   
  THE ADDITIONAL RAINFALL MAY CAUSE FLASH FLOODING. THE GREATEST     
  THREAT IS ACROSS HIGHER ELEVATIONS AND STEEPER TERRAIN.  TAKE      
  ACTION NOW TO PROTECT LIFE AND PROPERTY. DO NOT DRIVE THROUGH      
  FLOODED ROADS.

LAT...LON 4288 7789 4272 7787 4281 7700 4302 7717

$$

MCLAUGHLIN

2 follow-up statements

000 
WGUS71 KBUF 230414
FFSBUF
NYC051-069-230600-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1215 AM EDT SUN MAY 23 2004

...THE FLASH FLOOD WARNING FOR LIVINGSTON AND ONTARIO COUNTIES 
CONTINUES IN EFFECT UNTIL 2 AM...

REPEATED SHOWERS AND THUNDERSTORMS MOVED ACROSS THE REGION SATURDAY 
EVENING...DROPPING ANOTHER ONE TO THREE INCHES OF RAIN ON ALREADY 
SATURATED GROUND. THE SHOWERS AND STORMS HAVE BEGUN TO TAPER OFF AND 
SHOULD END BY AROUND 2 AM...BUT SOME LOCALIZED FLOODING IS STILL 
POSSIBLE...ESPECIALLY ACROSS HIGHER ELEVATIONS AND IN AREAS OF 
STEEP TERRAIN.

$$

MCLAUGHLIN

000 
WGUS71 KBUF 230601
FFSBUF
NYC051-069-230615-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
202 AM EDT SUN MAY 23 2004

...THE FLASH FLOOD WARNING FOR LIVINGSTON AND ONTARIO COUNTIES 
EXPIRED AT 2 AM...

REPEATED SHOWERS AND THUNDERSTORMS MOVED ACROSS THE REGION SATURDAY 
EVENING...DROPPING ANOTHER ONE TO THREE INCHES OF RAIN ON ALREADY 
SATURATED GROUND. THE SHOWERS AND STORMS HAVE PUSHED OFF TO THE 
SOUTH AND ENDED FOR THE NIGHT. NO FURTHER FLOODING IS EXPECTED 
OVERNIGHT.

$$

MCLAUGHLIN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 8:45 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	60 min
May 22, 10:11 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe	49 min
May 23, 12:20 AM EDT	Flash Flood Warning	BUF	Allegany, Cattaraugus	4 hr
May 23, 5:53 AM EDT	Flash Flood Warning	BUF	Cattaraugus	2 hr
May 23, 6:26 AM EDT	Flash Flood Warning	BUF	Chautauqua, Erie	3 hr
May 23, 2:31 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	44 min
May 23, 3:25 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	65 min

Nearby

Flash Flood Warnings in New York, 2004 Every flash flood warning in 2004

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.