Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

August 13, 2021Cattaraugus County, New York

NWS Buffalo, NY issued this special weather statement at Aug 13, 2021, 11:12 PM EDT for Cattaraugus County, New York. It was in force for 48 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, 11:12 PM EDT (03:12 UTC)
Expired
Aug 14, 2021, 12:00 AM EDT
In force
48 min
Issued by
NWS Buffalo, NY
Hail
0.00 in
Wind
30

County Cattaraugus County, NY

The radar

The Buffalo radar (KBUF), 83 km from the middle of the area, began a volume at 03:13 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, 3.2 hours before the alert went out and 80 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 00:00Z on 2021-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 179 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2021-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
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.

471 
WWUS81 KBUF 140312
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
1112 PM EDT Fri Aug 13 2021
 
NYZ020-021-140400-
Cattaraugus NY-Allegany NY-
1112 PM EDT Fri Aug 13 2021

...A strong thunderstorm will impact portions of east central
Cattaraugus and northwestern Allegany Counties through MIDNIGHT
EDT...

At 1111 PM EDT, Doppler radar was tracking a strong thunderstorm near
Franklinville, or 11 miles north of Olean, moving northeast at 20
mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Ashford, Franklinville, Belfast, Cuba, Rushford, Houghton, Caneadea,
Friendship, Ischua, Lyndon, Humphrey, Black Creek and Hardy Corners.

This includes Interstate 86 between exits 27 and 28.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

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

&&

LAT...LON 4214 7820 4221 7861 4236 7866 4243 7806
TIME...MOT...LOC 0311Z 206DEG 17KT 4224 7843 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

$$

Thomas

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 8:35 PM EDTSpecial Weather StatementBUFChautauqua40 min
Aug 13, 9:14 PM EDTSpecial Weather StatementBUFChautauqua31 min
Aug 13, 9:45 PM EDTSpecial Weather StatementBUFChautauqua30 min
Aug 13, 10:51 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Erie, Wyoming39 min
Aug 13, 11:04 PM EDTSpecial Weather StatementBUFOswego26 min
Aug 13, 11:39 PM EDTSpecial Weather StatementBUFErie66 min
Aug 14, 12:05 AM EDTSpecial Marine WarningBUF55 min
Aug 14, 11:46 AM EDTSmall Craft AdvisoryBUF11 hr

Nearby

Special Weather Statements in New York, 2021Every 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.