Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

January 20, 2021Cayuga County, New York

NWS Buffalo, NY issued this special weather statement at Jan 20, 2021, 8:15 AM EST for Cayuga County, New York. It was in force for 60 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 20, 2021, 8:15 AM EST (13:15 UTC)
Expired
Jan 20, 2021, 9:15 AM EST
In force
60 min
Issued by
NWS Buffalo, NY

County Cayuga County, NY

The radar

The Ft Drum radar (KTYX), 79 km from the middle of the area, began a volume at 13:18 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, 1.3 hours before the alert went out and 198 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 2021-01-20Temperature 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°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 2021-01-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.19395878Sfc1 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
839 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

116 
WWUS81 KBUF 201315
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
815 AM EST Wed Jan 20 2021

NYZ004>006-008-014-201415-
Ontario-Oswego-Lewis-Wayne-Northern Cayuga-
815 AM EST Wed Jan 20 2021

...A SNOW SQUALL WILL AFFECT SOUTHEASTERN WAYNE...SOUTHWESTERN
LEWIS...CAYUGA...SOUTHERN OSWEGO AND NORTHEASTERN ONTARIO COUNTIES...

At 813 AM EST, a snow squall was located near Cato, or 13 miles 
south of Fair Haven Beach State Park, moving south at 10 mph. This 
squall will move south through 9 AM this morning, rapidly reducing 
visibilities down to a half mile or less this morning. A quick inch 
of snow is possible with this squall.

Locations impacted include...
Geneva, Fulton, Newark, Lyons, Clifton Springs, Clyde, Phelps,
Central Square, Weedsport, Cato, Brewerton, Hastings, Constantia,
West Monroe, Gorham, Palermo, Phoenix, Rose, Ira and Conquest.

 This includes the following highways...
 Interstate 90 between exits 42 and 40.
 Interstate 81 between exits 32 and 33.

Use extra caution if you must travel into or through this dangerous 
snow squall. Rapid changes in visibility and potentially slick roads 
are likely to lead to accidents. Consider delaying travel until the 
squall passes your location.

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 4348 7581 4333 7589 4315 7588 4320 7608
      4327 7620 4320 7621 4324 7626 4324 7627
      4323 7626 4320 7627 4323 7631 4323 7648
      4303 7650 4301 7696 4276 7697 4276 7720
      4303 7723 4360 7563 4343 7560

$$

JLA

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 20, 5:51 AM ESTSpecial Weather StatementBUFMonroe, Orleans, Wayne54 min
Jan 20, 6:47 AM ESTSpecial Weather StatementBUFMonroe, Orleans, Wayne88 min
Jan 20, 8:01 AM ESTSpecial Weather StatementBUFGenesee, Ontario59 min
Jan 20, 8:42 AM ESTSpecial Weather StatementBUFLewis, Oswego78 min
Jan 20, 9:08 AM ESTSpecial Weather StatementBUFLivingston, Wyoming112 min

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.