Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

July 13, 2021Ontario County, Wayne County, New York

NWS Buffalo, NY issued this special weather statement at Jul 13, 2021, 8:16 PM EDT for Ontario County, Wayne County, New York. It was in force for 44 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: Jul 13, 2021, 8:16 PM EDT (00:16 UTC)
Expired: Jul 13, 2021, 9:00 PM EDT
In force: 44 min
Issued by: NWS Buffalo, NY

Counties Ontario County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 130 km from the middle of the area, began a volume at 00:20 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 00:00Z, 0.3 hours before the alert went out and 137 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 883 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -60 m²/s²
0-3 km storm-relative helicity: -49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

031 
WWUS81 KBUF 140016
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
816 PM EDT Tue Jul 13 2021

NYZ003>005-014-140100-
Ontario-Wayne-Monroe-Northern Cayuga-
816 PM EDT Tue Jul 13 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WAYNE...CAYUGA...EAST
CENTRAL MONROE AND NORTHEASTERN ONTARIO COUNTIES...

At 816 PM EDT, radar indicated scattered strong thunderstorms were 
located along a line extending from near Ontario to near Potter. 
Movement was east at 45 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Geneva, Canandaigua, Fair Haven Beach State Park, Ontario, Newark,
Williamson, Marion, Lyons, Palmyra, Clifton Springs, Clyde, Phelps,
Sodus, Weedsport, Rushville, Cato, Chimney Bluffs State Park,
Farmington, Walworth and Gorham.

This includes Interstate 90 between exits 43 and 40.
 
If outdoors, consider seeking shelter inside a building.

Heavy rainfall is also occurring with these storms, and may cause 
localized flooding. Do not drive your vehicle through flooded 
roadways.

These storms 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.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
central and western New York.

LAT...LON 4331 7741 4333 7717 4331 7697 4339 7673
      4345 7665 4303 7654 4301 7696 4276 7697
      4276 7731 4274 7733
TIME...MOT...LOC 0013Z 257DEG 40KT 4316 7729 4266 7723 
$$

Welch

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 8:00 PM EDT	Special Marine Warning	BUF		45 min
Jul 13, 8:04 PM EDT	Areal Flood Warning	BUF	Monroe	3 hr
Jul 13, 8:04 PM EDT	Special Weather Statement	BUF	Jefferson	41 min
Jul 13, 8:28 PM EDT	Special Marine Warning	BUF		2 hr
Jul 13, 8:35 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	55 min
Jul 13, 9:03 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Wayne	27 min
Jul 13, 9:25 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Jefferson, Lewis, Oswego	65 min
Jul 13, 9:38 PM EDT	Special Marine Warning	BUF		82 min
Jul 13, 10:17 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	73 min
Jul 14, 4:07 AM EDT	Flash Flood Warning	BUF	Cattaraugus, Chautauqua, Erie	3 hr
Jul 14, 5:45 AM EDT	Special Weather Statement	BUF	Wyoming	60 min
Jul 14, 7:15 AM EDT	Areal Flood Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie, Wyoming	3 hr
Jul 14, 2:16 PM EDT	Special Weather Statement	BUF	Niagara	59 min
Jul 14, 3:26 PM EDT	Special Weather Statement	BUF	Genesee	49 min
Jul 14, 5:03 PM EDT	Special Weather Statement	BUF	Ontario	57 min

Nearby

Special Weather Statements in New York, 2021 Every special weather statement in 2021

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.