Alert archive / New York / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 9, NWS Buffalo, NY

May 9, 2000Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 9, 2000, 6:35 PM EDT for Chautauqua County, New York. It was in force for 55 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 9, 2000, 6:35 PM EDT (22:35 UTC)
Expired: May 9, 2000, 7:30 PM EDT
In force: 55 min
Issued by: NWS Buffalo, NY
Area: Whole counties

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 90 km from the middle of the area, began a volume at 22:35 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 9, 7:15 PM EDT	Thunderstorm Wind	Mayville, NY

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.6 hours before the alert went out and 91 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: 751 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 767 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 100 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 
WUUS51 KBUF 092241
SVRBUF
NYC013-092330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
635 PM EDT TUE MAY 9 2000

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CHAUTAUQUA COUNTY IN WESTERN NEW YORK.

* UNTIL 730 PM EDT.

* AT 629 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  SEVERE THUNDERSTORMS ABOUT 5 MILES WEST OF RIPLEY...MOVING          
  NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  WESTFIELD AND BARCELONA AROUND 655 PM EDT.
  MAYVILLE AROUN 700 PM EDT
  BROCTON AROUND 715 PM EDT.
  DUNKIRK AROUND 730 PM EDT.

THESE ARE DANGEROUS STxORMS THAT COULD PRODUCE DAMAGING WINDS...HAIL 
AND FREQUENT LIGHTNING. THEY COULD ALSO PRODUCE LOCALIZED FLOODING. 
STAY INDOORS AWAY FROM WINDOWS.

TUCKER/NIZIOL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 1:35 AM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	55 min
May 9, 6:22 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	68 min
May 9, 7:02 PM EDT	Severe Thunderstorm Warning	BUF	Erie	58 min
May 9, 7:24 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	81 min
May 9, 7:46 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus	59 min

Nearby

Severe Thunderstorm Warnings in New York, 2000 Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.