Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

July 29, 2021Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Jul 29, 2021, 9:59 AM EDT for Cattaraugus County, Chautauqua County, New York. It was in force for 61 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 29, 2021, 9:59 AM EDT (13:59 UTC)
Expired: Jul 29, 2021, 11:00 AM EDT
In force: 61 min
Issued by: NWS Buffalo, NY

Counties Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 82 km from the middle of the area, began a volume at 14:01 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

Time	Report	Where	Remark
Jul 29, 10:47 AM EDT	TSTM WND DMG	1 Sse Ellington, NY	REPORT OF A DOWNED TREE ON ROUTE 62 BETWEEN ABBEY HILL RD AND LITTLE RD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 2.0 hours before the alert went out and 82 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: 27 J/kg
Mixed-layer CIN: -325 J/kg
Mixed-layer LCL: 1482 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

045 
WWUS81 KBUF 291359
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
959 AM EDT Thu Jul 29 2021

NYZ019-020-085-291500-
Chautauqua-Cattaraugus-Southern Erie-
959 AM EDT Thu Jul 29 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN CATTARAUGUS...
SOUTHERN ERIE AND CHAUTAUQUA COUNTIES...

At 958 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Evangola State Park to near Dunkirk
to 13 miles northwest of Lake Erie State Park to 10 miles northwest
of North East. Movement was east at 35 mph.

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

Locations impacted include...
Jamestown, Dunkirk, Fredonia, Springville, Westfield, Lakewood,
Gowanda, Silver Creek, Falconer, Ashford, Franklinville, Mayville,
Clymer, North Collins, Long Point State Park, Jamestown West, SUNY
Fredonia, Frewsburg, Ashford Hollow and Chautauqua Institution.

This includes the following highways...
 Interstate 90 between exits 61 and 58.
 Interstate 86 between exits 4 and 16.

Torrential 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.

LAT...LON 4244 7950 4251 7941 4251 7935 4264 7912
      4249 7834 4233 7846 4200 7916 4200 7976
      4227 7976 4228 7973 4231 7977
TIME...MOT...LOC 1358Z 284DEG 29KT 4259 7915 4250 7930 4252 7965 4232
7999
$$

JJR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 9:52 AM EDT	Special Marine Warning	BUF		53 min
Jul 29, 10:15 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	60 min
Jul 29, 4:17 PM EDT	Beach Hazards Statement	BUF	Cayuga, Monroe, Niagara, Orleans, Oswego, Wayne	30 hr
Jul 29, 4:17 PM EDT	Small Craft Advisory	BUF		27 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.