Alert archive / New York / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 22, NWS Buffalo, NY

July 10, 2001Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 10, 2001, 10:40 PM EDT for Ontario County, New York. It was in force for 65 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jul 10, 2001, 10:40 PM EDT (02:40 UTC)
Expired: Jul 10, 2001, 11:45 PM EDT
In force: 65 min
Issued by: NWS Buffalo, NY
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Ontario County, NY

The radar

The Buffalo radar (KBUF), 116 km from the middle of the area, began a volume at 02:43 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
Jul 10, 11:05 PM EDT	Thunderstorm Wind 50 E	Canandaigua, 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 nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.7 hours before the alert went out and 113 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: 686 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 1415 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 110241
SVRBUF

NYC069-110345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1040 PM EDT TUE JUL 10 2001

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ONTARIO COUNTY IN WESTERN NEW YORK
  THIS INCLUDES THE CITY OF CANANDAIGUA

* UNTIL 1145 PM EDT

* AT 1040 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES WEST OF VICTOR...OR ABOUT 10 MILES     
  SOUTH OF PENFIELD...MOVING SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CANANDAIGUA AT 1100 PM EDT

THIS IS A DANGEROUS STORM WITH DAMAGING WINDS AND LARGE HAIL. STAY
INDWOORS AWAY FROM WINDOWS.

LAT...LON 4304 7745 4291 7753 4276 7706 4293 7704

MCLAUGHLIN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 10:11 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	49 min
Jul 11, 12:31 AM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	59 min

Nearby

Severe Thunderstorm Warnings in New York, 2001 Every severe thunderstorm warning in 2001

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.