Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

November 28, 2021Allegany County, Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Nov 28, 2021, 6:06 PM EST for Allegany County, Cattaraugus County, Chautauqua County, New York. It was in force for 84 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: Nov 28, 2021, 6:06 PM EST (23:06 UTC)
Expired: Nov 28, 2021, 7:30 PM EST
In force: 84 min
Issued by: NWS Buffalo, NY

Counties Allegany County, NY, Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 69 km from the middle of the area, began a volume at 23:08 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 12:00Z, 11.1 hours before the alert went out and 67 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: 525 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

645 
WWUS81 KBUF 282306
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
606 PM EST Sun Nov 28 2021
 
NYZ019>021-290030-
Chautauqua NY-Cattaraugus NY-Allegany NY-
606 PM EST Sun Nov 28 2021

...A BAND OF HEAVY SNOW WILL AFFECT PARTS OF CHAUTAUQUA...
CATTARAUGUS...AND ALLEGANY COUNTIES...

HAZARDS...A band of heavy snow which can rapidly reduce visibility to
less than a quarter of a mile. This band of heavy snow is producing 
extremely heavy snow at the rate up to 2 inches per hour. This band 
of heavy snow is so intense that it is producing lightning and 
thunder at times. The snow will accumulate very rapidly.

LOCATION AND MOVEMENT...At 605 PM EST, a band of heavy snow was 
along a line extending from near Findley Lake to near Ellicottville 
to near Alfred and slowly moving south and east.

LOCATIONS IMPACTED INCLUDE...
Jamestown, Olean, Fredonia, Salamanca, Wellsville, Allegany State
Park, Alfred, Westfield, Lakewood, Gowanda, Falconer, Ashford,
Arcade, Allegany, Franklinville, Mayville, Clymer, Belfast, Cuba and
Rushford.

This includes the following highways...
 Interstate 90 between exits 61 and 60.
 Interstate 86 between exits 4 and 33.

SAFETY INFO...
Use extra caution if you must travel into or through this band of
heavy snow. Rapid changes in visibility and potentially slick roads
may lead to accidents.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time to reach your destination.

&&

LAT...LON 4244 7949 4249 7897 4244 7888 4252 7849
      4252 7786 4247 7784 4247 7772 4215 7775
      4200 7904 4200 7976 4227 7976 4228 7973
      4231 7977
TIME...MOT...LOC 2301Z 278DEG 18KT 4234 7776 4232 7872 4218 7969 
$$

Welch

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 27, 10:18 PM EST	Small Craft Advisory	BUF		30 hr
Nov 28, 10:13 AM EST	Lake Effect Snow Warning	BUF	Cattaraugus, Chautauqua	18 hr
Nov 28, 12:03 PM EST	Special Weather Statement	BUF	Erie	87 min
Nov 28, 1:59 PM EST	Special Weather Statement	BUF	Niagara	61 min
Nov 28, 3:00 PM EST	Special Weather Statement	BUF	Cattaraugus, Chautauqua	90 min
Nov 28, 4:26 PM EST	Special Weather Statement	BUF	Cattaraugus, Chautauqua	94 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.