Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

June 29, 2021Cattaraugus County, New York

NWS Buffalo, NY issued this special weather statement at Jun 29, 2021, 9:51 PM EDT for Cattaraugus County, New York. It was in force for 39 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: Jun 29, 2021, 9:51 PM EDT (01:51 UTC)
Expired: Jun 29, 2021, 10:30 PM EDT
In force: 39 min
Issued by: NWS Buffalo, NY

County Cattaraugus County, NY

The radar

The Buffalo radar (KBUF), 97 km from the middle of the area, began a volume at 01:55 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, 1.9 hours before the alert went out and 96 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: 281 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1494 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

As transmitted.

870 
WWUS81 KBUF 300151
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
951 PM EDT Tue Jun 29 2021

NYZ019-020-085-300230-
Chautauqua-Cattaraugus-Southern Erie-
951 PM EDT Tue Jun 29 2021

...A STRONG THUNDERSTORM WILL AFFECT WESTERN CATTARAUGUS...SOUTH
CENTRAL ERIE AND SOUTHEASTERN CHAUTAUQUA COUNTIES...

At 951 PM EDT, a strong thunderstorm was located over Lakewood and 
moving northeast at 40 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Jamestown, Salamanca, Allegany State Park, Lakewood, Gowanda,
Falconer, Jamestown West, Frewsburg, Long Point State Park, Busti,
Collins, Great Valley, New Albion, Gerry, Dayton, Conewango,
Ellington, Leon, Carrollton and Randolph.

This includes Interstate 86 between exits 8 and 23.
 
If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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 4212 7949 4253 7888 4210 7853 4200 7932
      4200 7939
TIME...MOT...LOC 0151Z 237DEG 34KT 4211 7933 
$$

Reynolds

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 10:33 PM EDT	Special Weather Statement	BUF	Cattaraugus	42 min
Jun 30, 11:30 AM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	45 min
Jun 30, 12:15 PM EDT	Special Weather Statement	BUF	Onondaga	15 min
Jun 30, 1:37 PM EDT	Special Weather Statement	BUF	Livingston	53 min
Jun 30, 2:15 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	35 min
Jun 30, 2:47 PM EDT	Special Weather Statement	BUF	Allegany	43 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.