Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

August 13, 2021Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Aug 13, 2021, 9:45 PM EDT for Chautauqua County, New York. It was in force for 30 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 13, 2021, 9:45 PM EDT (01:45 UTC)
Expired: Aug 13, 2021, 10:15 PM EDT
In force: 30 min
Issued by: NWS Buffalo, NY
Hail: 0.00 in
Wind: 40

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 71 km from the middle of the area, began a volume at 01:44 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, 1.8 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-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: 179 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 1052 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

449 
WWUS81 KBUF 140145
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
945 PM EDT Fri Aug 13 2021
 
NYZ019-020-085-140215-
Chautauqua NY-Cattaraugus NY-Southern Erie NY-
945 PM EDT Fri Aug 13 2021

...A strong thunderstorm will impact portions of northwestern
Cattaraugus, southwestern Erie and northeastern Chautauqua Counties
through 1015 PM EDT...

At 945 PM EDT, Doppler radar was tracking a strong thunderstorm near
Fredonia, moving northeast at 30 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Fredonia, Gowanda, Silver Creek, Evangola State Park, Collins,
Sheridan, Stockton, Dayton, Arkwright, Forestville, Cassadaga, South
Dayton, Sinclairville, Perrysburg, Farnham, Hamlet, Silver Creek
Reservoir and Versailles.

This includes Interstate 90 between exits 59 and 58.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4224 7926 4237 7942 4266 7910 4246 7885
TIME...MOT...LOC 0145Z 226DEG 24KT 4236 7927 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

Mitchell

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 8:35 PM EDT	Special Weather Statement	BUF	Chautauqua	40 min
Aug 13, 9:14 PM EDT	Special Weather Statement	BUF	Chautauqua	31 min
Aug 13, 10:51 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Wyoming	39 min
Aug 13, 11:04 PM EDT	Special Weather Statement	BUF	Oswego	26 min
Aug 13, 11:12 PM EDT	Special Weather Statement	BUF	Cattaraugus	48 min
Aug 13, 11:39 PM EDT	Special Weather Statement	BUF	Erie	66 min
Aug 14, 12:05 AM EDT	Special Marine Warning	BUF		55 min
Aug 14, 11:46 AM EDT	Small Craft Advisory	BUF		11 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.