Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

February 16, 2021Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Feb 16, 2021, 5:13 PM EST for Cattaraugus County, Chautauqua County, New York. It was in force for 2 hr. 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 16, 2021, 5:13 PM EST (22:13 UTC)
Expired
Feb 16, 2021, 7:15 PM EST
In force
2 hr
Issued by
NWS Buffalo, NY

Counties Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 73 km from the middle of the area, began a volume at 22:11 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, 10.2 hours before the alert went out and 74 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 12:00Z on 2021-02-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2021-02-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 617 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
545 m above ground
0-6 km bulk shear
118 kt
0-1 km storm-relative helicity
617 m²/s²
0-3 km storm-relative helicity
708 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

649 
WWUS81 KBUF 162213
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
513 PM EST Tue Feb 16 2021

NYZ012-019-020-085-170015-
Chautauqua-Cattaraugus-Southern Erie-Wyoming-
513 PM EST Tue Feb 16 2021

...LOCALLY HEAVY SNOW ACROSS THE WESTERN SOUTHERN TIER AND THE 
BOSTON AND WYOMING HILLS THROUGH 7 PM...

At 506 PM EST, bands of lake enhanced snow extended east of Lake 
Erie across the Chautauqua Ridge, Western Southern Tier, and the 
Boston and Wyoming hills. There are multiple bands, capable of 
lowering visibility to a quarter mile at times and producing 
snowfall rates of 1 to 2 inches per hour. Lake enhanced snows will 
taper off to scattered snow showers by late evening. Motorists 
should exercise caution during the evening commute.

Locations impacted include...
Dunkirk, Fredonia, Evans, Boston, Eden, Springville, Colden,
Westfield, Gowanda, Silver Creek, Ashford, Angola, Arcade,
Franklinville, Mayville, North Collins, Chaffee, SUNY Fredonia, North
Boston and Ashford Hollow.

 This includes Interstate 90 between exits 61 and 57A.
 
LAT...LON 4225 7976 4234 7971 4244 7950 4253 7939
      4259 7919 4266 7913 4276 7830 4222 7833
      4221 7976

$$

Apffel

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 16, 4:31 AM ESTSmall Craft AdvisoryBUF25 hr
Feb 16, 2:39 PM ESTWinter Weather AdvisoryBUFCayuga, Oswego, Wayne13 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.