Alert archive / New York / Flash Flood Warnings in 2001

Flash Flood Warning 5, NWS Buffalo, NY

June 21, 2001Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this flash flood warning at Jun 21, 2001, 10:15 PM EDT for Cattaraugus County, Chautauqua County, New York. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jun 21, 2001, 10:15 PM EDT (02:15 UTC)
Expired: Jun 22, 2001, 12:15 AM EDT
In force: 2 hr
Issued by: NWS Buffalo, NY
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Cattaraugus County, NY, Chautauqua County, NY

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.3 hours before the alert went out and 86 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: 620 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 701 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KBUF 220216
FFWBUF
NYC009-013-220415-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1015 PM EDT THU JUN 21 2001

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR URBAN AND SMALL STREAM FLOODING FOR...
  CATTARAUGUS COUNTY IN WESTERN NEW YORK
  THIS INCLUDES THE CITIES OF...OLEAN...SALAMANCA
  CHAUTAUQUA COUNTY IN WESTERN NEW YORK
  THIS INCLUDES THE CITIES OF...FREDONIA...JAMESTOWN...DUNKIRK

* UNTIL 1215 AM EDT

* AT 1010 PM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN ACROSS WESTERN CHAUTAUQUA  
  AND EASTERN CATTARAUGUS COUNTIES. THESE STORMS WERE MOVING         
  NORTHEAST AT 25 MPH. MORE THUNDERSTORMS WITH HEAVY RAIN ARE        
  MOVING TOWARD CHAUTAUQUA AND CATTARAUGUS COUNTIES AND WILL CONTINUE
  THE THREAT OF HEAVY RAIN THROUGH 11:30 PM.

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

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY 
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN 
BUFFALO.

LAT...LON 4201 7977 4201 7919 4201 7831 4254 7831
          4243 7888 4258 7916 4227 7975

TMA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 8:15 PM EDT	Flash Flood Warning	BUF	Chautauqua	2 hr
Jun 22, 3:32 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	58 min
Jun 22, 5:32 PM EDT	Flash Flood Warning	BUF	Lewis	58 min
Jun 22, 6:31 PM EDT	Flash Flood Warning	BUF	Lewis	89 min

Nearby

Flash Flood Warnings in New York, 2001 Every flash flood warning in 2001

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.