Alert archive / New York / Snow Squall Warnings in 2020

Snow Squall Warning 3, NWS Buffalo, NY

January 8, 2020Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this snow squall warning at Jan 8, 2020, 8:33 AM EST for Cattaraugus County, Chautauqua 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: Jan 8, 2020, 8:33 AM EST (13:33 UTC)
Expired: Jan 8, 2020, 9:30 AM EST
In force: 57 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 103 km from the middle of the area, began a volume at 13:34 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, 1.6 hours before the alert went out and 103 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: 5 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 774 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -5 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.

776 
WWUS51 KBUF 081335
SQWBUF

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Buffalo NY
833 AM EST Wed Jan 8 2020

NYC009-013-081430-
/O.NEW.KBUF.SQ.W.0003.200108T1333Z-200108T1430Z/
Cattaraugus NY-Chautauqua NY-
833 AM EST Wed Jan 8 2020

The National Weather Service in Buffalo has issued a

* Snow Squall Warning for...
  Southwestern Cattaraugus County in western New York...
  Southern Chautauqua County in western New York...

* Until 930 AM EST.

* At 833 AM EST, a dangerous snow squall was located near Mayville, 
  or 16 miles northwest of Jamestown, moving east at 35 mph.

  HAZARD...Heavy snow and blowing snow. Wind gusts greater than 30 
           mph producing brief, near zero visibility.

  SOURCE...Radar indicated.

  IMPACT...Dangerous life-threatening travel.

* This includes Interstate 86 between exits 6 and 18.
 
Locations impacted include...
Jamestown, Lakewood, Falconer, Mayville, Chautauqua Institution, 
Randolph and Frewsburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow Down! Rapid changes in visibility and road conditions are
expected with this dangerous snow squall. Be alert for sudden
whiteout conditions.

&&

LAT...LON 4203 7975 4232 7956 4227 7871 4200 7890
TIME...MOT...LOC 1333Z 281DEG 33KT 4223 7951 

$$

Hitchcock

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 7, 9:26 PM EST	Gale Warning	BUF		23 hr
Jan 8, 4:45 AM EST	Special Weather Statement	BUF	Lewis	60 min
Jan 8, 8:06 AM EST	Snow Squall Warning	BUF	Genesee, Livingston, Monroe, Ontario, Orleans, Wayne	54 min
Jan 8, 8:20 AM EST	Snow Squall Warning	BUF	Oswego	55 min
Jan 8, 8:52 AM EST	Snow Squall Warning	BUF	Cayuga, Ontario, Wayne	38 min
Jan 8, 9:27 AM EST	Special Weather Statement	BUF	Lewis	63 min
Jan 8, 9:32 AM EST	Special Weather Statement	BUF	Allegany, Cattaraugus	58 min
Jan 8, 9:56 AM EST	Special Weather Statement	BUF	Oswego	34 min
Jan 8, 12:01 PM EST	Special Weather Statement	BUF	Monroe, Wayne	74 min
Jan 8, 1:18 PM EST	Special Weather Statement	BUF	Monroe, Orleans	57 min
Jan 8, 2:58 PM EST	Special Weather Statement	BUF	Erie	32 min
Jan 8, 3:29 PM EST	Special Weather Statement	BUF	Wyoming	31 min

Nearby

Snow Squall Warnings in New York, 2020 Every snow squall warning in 2020

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.