Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

January 18, 2021Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Jan 18, 2021, 8:57 PM EST for Chautauqua 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: Jan 18, 2021, 8:57 PM EST (01:57 UTC)
Expired: Jan 18, 2021, 9:45 PM EST
In force: 48 min
Issued by: NWS Buffalo, NY

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 59 km from the middle of the area, began a volume at 01:56 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, 2.0 hours before the alert went out and 58 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: 1 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 525 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

830 
WWUS81 KBUF 190157
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
857 PM EST Mon Jan 18 2021

NYZ019-020-085-190245-
Chautauqua-Cattaraugus-Southern Erie-
857 PM EST Mon Jan 18 2021

...AN AREA OF HEAVY SNOW WILL AFFECT NORTHERN CATTARAUGUS...SOUTHERN
ERIE AND CHAUTAUQUA COUNTIES...

At 856 PM EST, a band of heavy snow was located along a line from 
near Lake Erie State Park to Randolph, moving northeast. This band 
of snow is producing snowfall rates of up to one inch per hour. 

Locations impacted include...
Dunkirk, Fredonia, Hamburg, Evans, Boston, Eden, Springville, 
Colden, Westfield, Gowanda, Silver Creek, Falconer, Angola, Arcade, 
Mayville, North Collins, Long Point State Park, Jamestown West and 
Chaffee.

 This includes the following highways...
 Interstate 90 between exits 60 and 57A.
 Interstate 86 between exits 9 and 16.

Visibilities will drop quickly to less than a half mile at times in 
this area of heavy 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 4235 7970 4244 7950 4253 7939 4259 7919
      4272 7909 4277 7896 4257 7846 4252 7846
      4252 7833 4200 7915

$$

Welch

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 18, 9:50 PM EST	Special Weather Statement	BUF	Erie	85 min
Jan 19, 3:09 AM EST	Special Weather Statement	BUF	Erie	81 min
Jan 19, 4:32 AM EST	Special Weather Statement	BUF	Erie	88 min
Jan 19, 6:13 AM EST	Special Weather Statement	BUF	Chautauqua, Erie, Wyoming	92 min
Jan 19, 7:45 AM EST	Special Weather Statement	BUF	Chautauqua	90 min
Jan 19, 9:09 AM EST	Special Weather Statement	BUF	Jefferson, Lewis	51 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.