Alert archive / New York / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 64, NWS Buffalo, NY

August 10, 2004Allegany County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 10, 2004, 5:10 PM EDT for Allegany County, New York. It was in force for 35 min. 1 report 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: Aug 10, 2004, 5:10 PM EDT (21:10 UTC)
Expired: Aug 10, 2004, 5:45 PM EDT
In force: 35 min
Issued by: NWS Buffalo, NY
Area: Counties, with a storm outline in the text

County Allegany County, NY

The radar

The Buffalo radar (KBUF), 120 km from the middle of the area, began a volume at 21:10 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
Aug 10, 5:10 PM EDT	HAIL 0.75	Bath, NY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 10, 1:10 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.2 hours before the alert went out and 116 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: 465 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 850 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 102110
SVRBUF
NYC003-102145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
509 PM EDT TUE AUG 10 2004

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 545 PM EDT

* AT 501 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.  THIS
  STORM WAS LOCATED 7 MILES SOUTHWEST OF ALFRED...OR ABOUT 6 MILES
  NORTHEAST OF WELLSVILLE...AND WAS MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ALFRED THROUGH 530 PM.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

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 4224 7791 4207 7783 4220 7724 4241 7734

$$

DJF

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 2:36 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus	54 min
Aug 10, 3:32 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus	43 min
Aug 10, 6:18 PM EDT	Special Marine Warning	BUF		117 min
Aug 10, 6:18 PM EDT	Special Marine Warning	BUF		117 min
Aug 10, 6:34 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga	41 min
Aug 10, 7:03 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	57 min
Aug 10, 7:56 PM EDT	Special Marine Warning	BUF		49 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.