Alert archive / New York / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 54, NWS Buffalo, NY

November 12, 2003Cattaraugus County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Nov 12, 2003, 9:40 PM EST for Cattaraugus County, New York. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Nov 12, 2003, 9:40 PM EST (02:40 UTC)
Expired: Nov 12, 2003, 10:30 PM EST
In force: 50 min
Issued by: NWS Buffalo, NY
Area: Counties, with a storm outline in the text

County Cattaraugus County, NY

The radar

The Buffalo radar (KBUF), 71 km from the middle of the area, began a volume at 02:40 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 watch it was issued in

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

Issued	Product	Office	Lasted
Nov 12, 7:20 PM EST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.7 hours before the alert went out and 69 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: 158 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1117 m above ground
0-6 km bulk shear: 90 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 339 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 130240
SVRBUF
NYC009-130330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
940 PM EST WED NOV 12 2003

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 1030 PM EST

* AT 935 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM OTTO TO 8 MILES WEST OF ALLEGANY
  PARK...OR FROM 15 MILES NORTH OF SALAMANCA TO 13 MILES SOUTHWEST OF
  SALAMANCA...MOVING EAST AT 55 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  ASHFORD AT 950 PM EST
  FRANKLINVILLE AND ALLEGANY AT 1000 PM EST
  HINSDALE AT 1005 PM EST

THIS IS A DANGEROUS STORM. STAY INDOORS AWAY FROM WINDOWS.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EST
WEDNESDAY EVENING FOR WESTERN NEW YORK.

LAT...LON 4246 7883 4199 7903 4211 7834 4252 7832

$$

DJF

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 12, 7:13 PM EST	Special Marine Warning	BUF		2 hr
Nov 12, 7:18 PM EST	Severe Thunderstorm Warning	BUF	Niagara	27 min
Nov 12, 8:02 PM EST	Special Marine Warning	BUF		58 min
Nov 12, 8:59 PM EST	Special Marine Warning	BUF		31 min
Nov 12, 8:59 PM EST	Special Marine Warning	BUF		31 min
Nov 12, 9:08 PM EST	Special Marine Warning	BUF		97 min
Nov 12, 9:19 PM EST	Severe Thunderstorm Warning	BUF	Erie	56 min
Nov 12, 9:42 PM EST	Severe Thunderstorm Warning	BUF	Genesee	48 min
Nov 12, 10:01 PM EST	Severe Thunderstorm Warning	BUF	Monroe, Orleans	59 min
Nov 12, 10:12 PM EST	Special Marine Warning	BUF		63 min
Nov 12, 10:21 PM EST	Severe Thunderstorm Warning	BUF	Livingston	24 min

Nearby

Severe Thunderstorm Warnings in New York, 2003 Every severe thunderstorm warning in 2003

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.