Alert archive / New York / Flash Flood Warnings in 1998

Flash Flood Warning 25, NWS Buffalo, NY

June 30, 1998Monroe County, New York

NWS Buffalo, NY issued this flash flood warning at Jun 30, 1998, 2:51 PM EDT for Monroe 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 counties it named.

The facts

Issued: Jun 30, 1998, 2:51 PM EDT (18:51 UTC)
Expired: Jun 30, 1998, 4:55 PM EDT
In force: 2 hr
Issued by: NWS Buffalo, NY
Area: Whole counties

County Monroe County, NY

The radar

The Buffalo radar (KBUF), 93 km from the middle of the area, began a volume at 18:53 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 12:00Z, 6.9 hours before the alert went out and 90 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: 3 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 865 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBUF 301851
FFWBUF
NYC055-302055-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS
NATIONAL WEATHER SERVICE BUFFALO NY
251 PM EDT TUE JUN 30 1998

THE NATIONAL WEATHER SERVICE IN BUFFALO NY HAS ISSUED A

* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS FOR...
  MONROE COUNTY IN WESTERN NEW YORK

* UNTIL 455 PM EDT

* AT 245 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A THUNDERSTORM WITH VERY HEAVY RAIN FROM HENRIETTA TO PERINTON...
  MOVING EAST AT 25 MILES AN HOUR.

* RAINFALL OF ONE AND ONE HALF INCHES PER HOUR WILL CAUSE FLOODING
  ALONG SMALL STREAMS AND POOR DRAINAGE AREAS.

IF YOU ARE IN THESE AREAS... MOVE TO HIGHER GROUND. DO NOT DRIVE
THROUGH WATER COVERING THE ROAD.

REMEMBER...A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR
ALREADY OCCURRING. TAKE NECESSARY PRECAUTIONS TO PROTECT LIFE
AND PROPERTY.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 6:46 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	49 min
Jun 30, 7:32 AM EDT	Severe Thunderstorm Warning	BUF	Orleans	33 min
Jun 30, 2:59 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	61 min
Jun 30, 3:35 PM EDT	Severe Thunderstorm Warning	BUF	Erie	55 min
Jun 30, 4:26 PM EDT	Severe Thunderstorm Warning	BUF	Erie	44 min
Jun 30, 4:51 PM EDT	Severe Thunderstorm Warning	BUF	Wyoming	64 min
Jun 30, 6:00 PM EDT	Severe Thunderstorm Warning	BUF	Livingston	20 min

Nearby

Flash Flood Warnings in New York, 1998 Every flash flood warning in 1998

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.