Alert archive / New York / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 66, NWS Buffalo, NY

July 29, 2002Genesee County, Orleans County, Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 29, 2002, 10:26 PM EDT for Genesee County, Orleans County, Wyoming County, New York. It was in force for 49 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 29, 2002, 10:26 PM EDT (02:26 UTC)
Expired: Jul 29, 2002, 11:15 PM EDT
In force: 49 min
Issued by: NWS Buffalo, NY
Area: Counties, with a storm outline in the text

Counties Genesee County, NY, Orleans County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 42 km from the middle of the area, began a volume at 02:26 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
Jul 29, 10:35 PM EDT	Thunderstorm Wind 50 E	Batavia, NY
Jul 29, 10:38 PM EDT	Thunderstorm Wind 50 E	Eagle, NY
Jul 29, 10:40 PM EDT	Thunderstorm Wind 50 E	Kendall, 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.

Issued	Product	Office	Lasted
Jul 29, 7:10 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.4 hours before the alert went out and 39 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: 875 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1129 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

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

478 
WUUS51 KBUF 300226
SVRBUF
NYC037-073-121-300315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1025 PM EDT MON JUL 29 2002

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GENESEE COUNTY IN WESTERN NEW YORK
  ORLEANS COUNTY IN WESTERN NEW YORK
  WYOMING COUNTY IN WESTERN NEW YORK

* UNTIL 1115 PM EDT

* AT 1021 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM FROM LOCKPORT TO 15 MILES        
  SOUTHEAST OF EAST AURORA...MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  ATTICA AT 1030 PM EDT
  OAKFIELD AT 1035 PM EDT
  PORTAGEVILLE AND WARSAW AND MEDINA AT 1040 PM EDT
  PERRY AT 1045 PM EDT
  PAVILION AND BYRON AND LE ROY AT 1050 PM EDT
  WATERPORT AT 1055 PM EDT

INTENSE RAIN AND STRONG DAMAGING WINDS ARE LIKELY WITH THIS STORM. 
TAKE COVER IN A SUBSTANTIAL SHELTER UNTIL THE STORM PASSES.

THIS STORM ALSO HAS INTENSE LIGHTNING. 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 MIDNIGHT EDT
TUESDAY MORNING FOR WESTERN NEW YORK.

LAT...LON 4335 7847 4309 7846 4254 7844 4256 7806
          4269 7798 4299 7794 4334 7801

The office that day

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

Issued	Product	Office	Lasted
Jul 29, 8:42 PM EDT	Special Marine Warning	BUF	93 min
Jul 29, 8:42 PM EDT	Special Marine Warning	BUF	93 min
Jul 29, 8:42 PM EDT	Special Marine Warning	BUF	93 min
Jul 29, 9:47 PM EDT	Special Marine Warning	BUF	28 min
Jul 29, 10:25 PM EDT	Special Marine Warning	BUF	65 min
Jul 29, 10:25 PM EDT	Special Marine Warning	BUF	65 min
Jul 30, 12:13 AM EDT	Special Marine Warning	BUF	62 min

Nearby

Severe Thunderstorm Warnings in New York, 2002 Every severe thunderstorm warning in 2002

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.