Alert archive / New York / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 73, NWS Buffalo, NY

September 20, 2000Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 20, 2000, 11:16 PM EDT for Chautauqua County, New York. It was in force for 59 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
Sep 20, 2000, 11:16 PM EDT (03:16 UTC)
Expired
Sep 21, 2000, 12:15 AM EDT
In force
59 min
Issued by
NWS Buffalo, NY
Area
Whole counties

County Chautauqua County, NY

What was reported inside it

TimeReportWhereRemark
Sep 20, 11:40 PM EDTThunderstorm WindBrocton, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Sep 20, 7:45 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 3.3 hours before the alert went out and 218 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, Pittsburgh, PA at 00:00Z on 2000-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 647 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 00:00Z on 2000-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 260 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
647 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1226 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
260 m²/s²
0-3 km storm-relative helicity
351 m²/s²
Significant tornado parameter
1.1
Supercell composite
11.1

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 210318
SVRBUF
NYC013-210415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1116 PM EDT WED SEP 20 2000

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 1215 AM EDT.

* AT 1115 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORMS OVER ERIE COUNTY PENNSYLVANIA...MOVING        
  NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORMS WILL REACH...
  FINDLEY LAKE AROUND 1125 PM EDT.
  RIPLEY...SHERMAN AROUND 1135 PM EDT.
  WESTFIELD...BARCELONA AROUND 1145 PM EDT.
  BEMUS POINT...MAYVILLE AROUND 1150 PM EDT.
  BROCTON AROUND MIDNIGHT EDT.
  
THESE STORMS HAVE A HISTORY OF WINDS OVER 60 MPH.
STAY INDOORS AWAY FROM WINDOWS.

MCLAUGHLIN

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 11:48 PM EDTSevere Thunderstorm WarningBUFErie57 min
Sep 21, 12:05 AM EDTSevere Thunderstorm WarningBUFCattaraugus55 min

Nearby

Severe Thunderstorm Warnings in New York, 2000Every 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.