Alert archive / New York / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 69, NWS Buffalo, NY

August 29, 2004Livingston County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 29, 2004, 2:03 PM EDT for Livingston County, New York. It was in force for 27 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: Aug 29, 2004, 2:03 PM EDT (18:03 UTC)
Expired: Aug 29, 2004, 2:30 PM EDT
In force: 27 min
Issued by: NWS Buffalo, NY
Area: Counties, with a storm outline in the text

County Livingston County, NY

The radar

The Buffalo radar (KBUF), 82 km from the middle of the area, began a volume at 18:04 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
Aug 29, 1:20 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.1 hours before the alert went out and 79 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: 1070 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 672 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 291803
SVRBUF
NYC051-291830-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
202 PM EDT SUN AUG 29 2004

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 230 PM EDT

* AT 156 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 5 MILES NORTH OF
  AVON...OR ABOUT 12 MILES SOUTHWEST OF BRIGHTON...AND WAS MOVING
  EAST AT 35 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE LARGE HAIL AND DAMAGING 
WINDS.

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

LAT...LON 4295 7776 4294 7774 4294 7758 4293 7758
      4290 7778 4294 7778 4299 7781 4299 7773

$$

NIZIOL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 29, 2:07 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	53 min
Aug 29, 2:55 PM EDT	Flash Flood Warning	BUF	Monroe	3 hr
Aug 29, 3:10 PM EDT	Flash Flood Warning	BUF	Wayne	3 hr
Aug 29, 5:11 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus	34 min
Aug 29, 5:56 PM EDT	Special Marine Warning	BUF		64 min
Aug 29, 6:06 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	54 min

Nearby

Severe Thunderstorm Warnings in New York, 2004 Every severe thunderstorm warning in 2004

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.