Alert archive / New York / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 15, NWS Buffalo, NY

July 1, 2001Monroe County, Orleans County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 1, 2001, 11:06 AM EDT for Monroe County, Orleans County, New York. It was in force for 39 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 1, 2001, 11:06 AM EDT (15:06 UTC)
Expired
Jul 1, 2001, 11:45 AM EDT
In force
39 min
Issued by
NWS Buffalo, NY
Area
Whole counties

Counties Monroe County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 73 km from the middle of the area, began a volume at 15:09 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

TimeReportWhereRemark
Jul 1, 11:35 AM EDTThunderstorm Wind 50 EWebster, 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, 3.1 hours before the alert went out and 71 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2001-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1768 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2001-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 171 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1768 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
563 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
171 m²/s²
0-3 km storm-relative helicity
189 m²/s²
Significant tornado parameter
1.6
Supercell composite
8.3

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 011507
SVRBUF

NYC055-073-011545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1106 AM EDT SUN JUL 1 2001

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MONROE COUNTY IN WESTERN NEW YORK
  THIS INCLUDES THE CITIES OF...BRIGHTON...BROCKPORT...EAST
  ROCHESTER...FAIRPORT...GATES-NORTH GATES...GREECE...IRONDEQUOIT...
  ROCHESTER...WEBSTER
  SOUTHEASTERN ORLEANS COUNTY IN WESTERN NEW YORK
  THIS INCLUDES THE CITY OF ALBION

* UNTIL 1145 AM EDT

* AT 1054 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES SOUTHWEST OF ALBION...MOVING EAST AT 45
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  4 MILES SOUTH OF BROCKPORT AT 1115 AM EDT
  OVER SPENCERPORT AT 1125 AM EDT
  OVER GATES-NORTH GATES AT 1130 AM EDT
  OVER ROCHESTER...AT 1140 AM EDT

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 PM EDT SUNDAY
AFTERNOON FOR WESTERN NEW YORK.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 9:38 AM EDTSevere Thunderstorm WarningBUFOswego37 min
Jul 1, 9:49 AM EDTSevere Thunderstorm WarningBUFJefferson41 min
Jul 1, 11:45 AM EDTSevere Thunderstorm WarningBUFWayne30 min
Jul 1, 12:11 PM EDTSevere Thunderstorm WarningBUFJefferson, Oswego49 min
Jul 1, 12:48 PM EDTSevere Thunderstorm WarningBUFLewis42 min

Nearby

Severe Thunderstorm Warnings in New York, 2001Every 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.