Alert archive / New York / Special Weather Statements in 2017

Special Weather Statement, NWS Buffalo, NY

August 2, 2017Ontario County, New York

NWS Buffalo, NY issued this special weather statement at Aug 2, 2017, 7:34 PM EDT for Ontario County, New York. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 2, 2017, 7:34 PM EDT (23:34 UTC)
Expired
Aug 2, 2017, 8:15 PM EDT
In force
41 min
Issued by
NWS Buffalo, NY

County Ontario County, NY

The radar

The Buffalo radar (KBUF), 98 km from the middle of the area, began a volume at 23:37 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.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.6 hours before the alert went out and 95 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 2017-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 37 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2017-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -38 square meters per square second.1939Sfc1 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
37 J/kg
Mixed-layer CIN
-107 J/kg
Mixed-layer LCL
1523 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-38 m²/s²
0-3 km storm-relative helicity
-3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

957 
WWUS81 KBUF 022334
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
734 PM EDT WED AUG 2 2017

NYZ013-014-030015-
Ontario-Livingston-
734 PM EDT WED AUG 2 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN LIVINGSTON AND
NORTHWESTERN ONTARIO COUNTIES...

At 734 PM EDT, a strong thunderstorm was located over Lima, or 13
miles northeast of Geneseo, moving east at 5 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Honeoye Falls, Lima and West Bloomfield. 

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4283 7759 4294 7762 4295 7759 4294 7748
      4297 7748 4297 7746 4281 7742
TIME...MOT...LOC 2334Z 260DEG 4KT 4288 7758 

$$

Thomas

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 1:37 PM EDTLakeshore Flood WatchBUFCayuga, Jefferson, Monroe, Oswego, Wayne25 hr
Aug 2, 4:10 PM EDTSpecial Weather StatementBUFCattaraugus35 min
Aug 2, 5:29 PM EDTSpecial Weather StatementBUFAllegany31 min
Aug 2, 5:57 PM EDTFlash Flood WarningBUFAllegany, Cattaraugus3 hr

Nearby

Special Weather Statements in New York, 2017Every special weather statement in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.