Alert archive / New York / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 27, NWS Buffalo, NY

August 7, 2001Niagara County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 7, 2001, 3:49 PM EDT for Niagara 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: Aug 7, 2001, 3:49 PM EDT (19:49 UTC)
Expired: Aug 7, 2001, 4:30 PM EDT
In force: 41 min
Issued by: NWS Buffalo, NY
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Niagara County, NY

What was reported inside it

Time	Report	Where	Remark
Aug 7, 4:00 PM EDT	Thunderstorm Wind 52 E	Wilson, 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 12:00Z, 7.8 hours before the alert went out and 40 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: 1144 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 884 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

188 
WUUS51 KBUF 071950
SVRBUF
NYC063-072030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
349 PM EDT TUE AUG 7 2001

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 430 PM EDT

* AT 345 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM NEAR WILSON...MOVING SOUTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL MOVE ACROSS NORTHERN AND EASTERN      
  NIAGARA COUNTY THROUGH 430 PM EDT.

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

LAT...LON 4336 7897 4323 7879 4313 7857 4334 7852

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 5:54 AM EDT	Severe Thunderstorm Warning	BUF	Oswego	66 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.