Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

January 22, 2021Monroe County, New York

NWS Buffalo, NY issued this special weather statement at Jan 22, 2021, 8:59 AM EST for Monroe County, New York. It was in force for 76 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 22, 2021, 8:59 AM EST (13:59 UTC)
Expired
Jan 22, 2021, 10:15 AM EST
In force
76 min
Issued by
NWS Buffalo, NY

County Monroe County, NY

The radar

The Buffalo radar (KBUF), 75 km from the middle of the area, began a volume at 13:59 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, 2.0 hours before the alert went out and 72 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 2021-01-22Temperature 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 2021-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.1939587897117Sfc1 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
919 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

655 
WWUS81 KBUF 221359
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
859 AM EST Fri Jan 22 2021

NYZ002-003-011-221515-
Orleans-Genesee-Monroe-
859 AM EST Fri Jan 22 2021

...A BAND OF HEAVY SNOW WILL AFFECT ORLEANS...NORTHERN GENESEE AND 
MONROE COUNTIES...

At 855 AM EST, A band of heavy snow was producing snow fall rates of 
up to an inch per hour. This band will continue to slowly slide 
southeast across the area through 1030 am. Expect very poor travel 
conditions in this band of heavy snow, with visibility below a half 
mile in heavy snow, along with snow covered and slick roads. 

Locations impacted include...
Rochester, Greece, Irondequoit, Chili, Brockport, East Rochester,
Medina, Albion, Webster, Fairport, Brighton, Gates-North Gates,
Henrietta, Penfield, Spencerport, Byron, Churchville, Oakfield,
Holley and Waterport.

 This includes the following highways...
 Interstate 390 near exit 12.
 Interstate 90 near exit 46.

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 4337 7844 4321 7738 4304 7737 4304 7748
      4302 7749 4306 7846

$$

TMA

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 22, 3:25 AM ESTLake Effect Snow WarningBUFJefferson, Lewis, Oswego10 hr
Jan 22, 3:25 AM ESTWinter Weather AdvisoryBUFCayuga, Monroe, Orleans, Oswego, Wayne31 hr
Jan 22, 3:38 AM ESTSmall Craft AdvisoryBUF53 hr
Jan 22, 4:51 AM ESTSpecial Weather StatementBUFLewis, Oswego114 min
Jan 22, 6:31 AM ESTSpecial Weather StatementBUFOswego89 min
Jan 22, 7:06 AM ESTSpecial Weather StatementBUFNiagara54 min
Jan 22, 8:04 AM ESTSpecial Weather StatementBUFNiagara56 min
Jan 22, 9:04 AM ESTSpecial Weather StatementBUFWayne56 min
Jan 22, 10:18 AM ESTSpecial Weather StatementBUFMonroe, Ontario, Wayne72 min
Jan 22, 11:01 AM ESTSpecial Weather StatementBUFAllegany, Cattaraugus59 min
Jan 22, 3:41 PM ESTSpecial Weather StatementBUFOswego49 min
Jan 22, 4:54 PM ESTSpecial Weather StatementBUFOswego66 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.