Alert archive / New York / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 14, NWS Buffalo, NY

July 1, 2001Jefferson County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 1, 2001, 9:49 AM EDT for Jefferson County, New York. It was in force for 41 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 1, 2001, 9:49 AM EDT (13:49 UTC)
Expired: Jul 1, 2001, 10:30 AM EDT
In force: 41 min
Issued by: NWS Buffalo, NY
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Jefferson County, NY

What was reported inside it

Time	Report	Where	Remark
Jul 1, 10:10 AM EDT	Thunderstorm Wind 65 E	Clayton, 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 1, 8:15 AM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 1.8 hours before the alert went out and 242 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: 1136 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 609 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 011349
SVRBUF

NYC045-011430-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
949 AM EDT SUN JUL 1 2001

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN JEFFERSON COUNTY IN CENTRAL NEW YORK

* UNTIL 1030 AM EDT

* AT 944 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 15 MILES SOUTHWEST OF CLAYTON...OR ABOUT 19
  MILES WEST OF WATERTOWN...MOVING NORTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE 
  7 MILES SOUTH OF CLAYTON AT 1005 AM EDT

THIS IS A DANGEROUS STORM WITH DAMAGING WINDS AND LARGE HAIL. STAY
INDOORS AWAY FROM WINDOWS.
N
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 PM EDT SUNDAY
AFTERNOON FOR WESTERN NEW YORK.

LAT...LON 4413 7639 4397 7629 4418 7549 4440 7563

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 9:38 AM EDT	Severe Thunderstorm Warning	BUF	Oswego	37 min
Jul 1, 11:06 AM EDT	Severe Thunderstorm Warning	BUF	Monroe, Orleans	39 min
Jul 1, 11:45 AM EDT	Severe Thunderstorm Warning	BUF	Wayne	30 min
Jul 1, 12:11 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Oswego	49 min
Jul 1, 12:48 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	42 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.