Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

February 20, 2021Erie County, Genesee County, New York

NWS Buffalo, NY issued this special weather statement at Feb 20, 2021, 10:48 AM EST for Erie County, Genesee County, New York. It was in force for 57 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: Feb 20, 2021, 10:48 AM EST (15:48 UTC)
Expired: Feb 20, 2021, 11:45 AM EST
In force: 57 min
Issued by: NWS Buffalo, NY

Counties Erie County, NY, Genesee County, NY

The radar

The Buffalo radar (KBUF), 31 km from the middle of the area, began a volume at 15:52 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, 3.8 hours before the alert went out and 30 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: 592 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

086 
WWUS81 KBUF 201548
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
1048 AM EST Sat Feb 20 2021

NYZ001-010>012-019-020-085-201645-
Chautauqua-Cattaraugus-Southern Erie-Wyoming-Genesee-Niagara-Northern
Erie-
1048 AM EST Sat Feb 20 2021

...LAKE EFFECT SNOW WILL AFFECT WESTERN WYOMING...NORTHERN 
CATTARAUGUS...ERIE...SOUTHEASTERN NIAGARA...NORTHEASTERN CHAUTAUQUA 
AND WESTERN GENESEE COUNTIES...

At 1045 AM EST, an area of moderate to heavy lake effect snow 
producing snowfall rates up to 1 inch per hour and sharply reduced 
visibility less than one quarter mile was located from Clarence and 
Corfu, southwest to Dunkirk, Silver Creek and Holland. 

Locations impacted include...
Clarence, Batavia, Dunkirk, Hamburg, East Aurora, Darien Lakes State 
Park, Evans, Elma, Boston, Eden, Marilla, Springville, Pembroke, 
Bennington, Colden, Orchard Park, Akron and Gowanda.

This includes Interstate 90 between exits 59 and 57, and between 
exits 48A and 48.
 
Visibilities will drop quickly to less than a quarter of a mile 
during the heaviest snow.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time when traveling.

LAT...LON 4247 7942 4281 7872 4314 7857 4304 7810
      4237 7849 4240 7890

$$

JLA

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 20, 4:26 AM EST	Small Craft Advisory	BUF		21 hr
Feb 20, 4:42 AM EST	Special Weather Statement	BUF	Erie, Wyoming	78 min
Feb 20, 6:51 AM EST	Special Weather Statement	BUF	Erie, Wyoming	84 min
Feb 20, 8:12 AM EST	Special Weather Statement	BUF	Erie	63 min
Feb 20, 8:42 AM EST	Special Weather Statement	BUF	Niagara, Orleans	63 min
Feb 20, 10:04 AM EST	Special Weather Statement	BUF	Orleans	56 min
Feb 20, 2:17 PM EST	Special Weather Statement	BUF	Genesee, Orleans	58 min
Feb 20, 2:23 PM EST	Special Weather Statement	BUF	Wyoming	52 min
Feb 20, 4:14 PM EST	Special Weather Statement	BUF	Genesee, Monroe, Niagara, Orleans	2 hr
Feb 20, 4:19 PM EST	Special Weather Statement	BUF	Erie	116 min
Feb 20, 6:16 PM EST	Special Weather Statement	BUF	Genesee, Niagara, Orleans	89 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.