Alert archive / New York / Flash Flood Warnings in 1989

Flash Flood Warning 10, NWS Buffalo, NY

June 20, 1989Orleans County, New York

NWS Buffalo, NY issued this flash flood warning at Jun 20, 1989, 3:45 PM EDT for Orleans County, New York. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 20, 1989, 3:45 PM EDT (19:45 UTC)
Expired
Jun 20, 1989, 6:00 PM EDT
In force
2 hr
Issued by
NWS Buffalo, NY
Area
Whole counties

County Orleans County, NY

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.8 hours before the alert went out and 55 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 1989-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 1989-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
804 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBUF 201923 RRA
FFWBUF
NYC003-009-013-073-211800-

BULLETIN  IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
345 PM EDT TUE JUN 20 1989

THE NATIONAL WEATHER SERVICE HAS CONTINUED THE FLOOD WARNING
TONIGHT FOR PEOPLE IN THE FOLLOWING NEW YORK COUNTIES...

    CHAUTAUQUA   CATTARAUGUS   AND  ALLEGANY

AND EXPANDED THE WARNING TO INCLUDE

    ORLEANS COUNTY

A FLOOD WATCH ALSO REMAINS UP FOR THE REMAINDER OF THE WESTERN AND
CENTRAL NEW YORK REGION.

HEAVY RAINS ARE STILL POSSIBLE ACROSS OUR REGION TONIGHT AS WEATHER
SYSTEMS ARE VERY SLOW TO MOVE AND MOISTURE REMAINS HIGH.

ORLEANS COUNTY SHERIFF REPORTED SOME ROADS IMPASSABLE DUE TO FLOODING
AROUND THE ALBION AREA SHORTLY AFTER 330 PM THIS AFTERNOON.  MODERATE TO
HEAVY RAIN WAS CONTINUING IN THE ALBION AREA.

MAJOR STREAMS ACROSS THE SOUTHERN TIER OF NEW YORK ARE EXPECTED TO
REACH BANKFUL OVERNIGHT AND ADDITIONAL HEAVY RAINS COULD CAUSE PROBLEMS
OVER MUCH OF OUR AREA.

RAINFALL REPORTS FROM AROUND THE AREA AT MIDAFTERNOON INCLUDED

GETZVILLE  NEAR BUFFALO 1.71
HORNELL AREA  1.48
WHITESVILLE IN ALLEGANY COUNTY 1.11
BUFFALO DOWNTOWN 1.11
NORTH TONAWANDA 1.03

THE GENESEE RIVER AT WELLSVILLE IS EXPECTED TO SHOULD BE CLOSE TO CREST
THIS EVENING NEAR FLOOD STAGE OF 10 FEET.

ON THE ALEGHENY RIVER AT OLEAN ANOTHER INCH OF RAIN IS POSSIBLE
OVERNIGHT.  WITH THAT AMOUNT OF PRECIPITATION THE RIVER WOULD CREST
BETWEEN 12 AND 14 FEET WEDNESDAY AFTERNOON.  FLOOD STAGE IS 10 FEET
AND DIKES PROTECT THE CITY TO 24 FEET.  LOWLAND FLOODING CAN BE EXPECTED
WHEN THE RIVER CROSSES 10 FEET EARLY WEDNESDAY MORNING.

REMEMEMBER...WATER ON ROADS CAN BE VERY DECEPTIVE.  UNDERPASSES CAN
FILL QUICKLY.  DO NOT TRY TO DVRIVE THROUGH FLOODED AREAS.

A FLOOD WARNING MEANS FLOODING IS IMMINENT OR HAS BEEN REPORTED.
TAKE PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

DUNHAM

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 20, 11:20 AM EDTFlash Flood WarningBUFErie, Niagara, Orleans4 hr
Jun 20, 11:45 AM EDTFlash Flood WarningBUFAllegany, Cattaraugus, Chautauqua3 hr
Jun 20, 3:15 PM EDTFlash Flood WarningBUFAllegany, Cattaraugus3 hr
Jun 20, 3:15 PM EDTFlash Flood WarningBUFChautauqua3 hr

Nearby

Flash Flood Warnings in New York, 1989Every flash flood warning in 1989

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.