Alert archive / New York / Snow Squall Warnings in 2020

Snow Squall Warning 1, NWS Buffalo, NY

January 8, 20206 counties in New York

NWS Buffalo, NY issued this snow squall warning at Jan 8, 2020, 8:06 AM EST for 6 counties in New York. It was in force for 54 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, 8:06 AM EST (13:06 UTC)
Expired: Jan 8, 2020, 9:00 AM EST
In force: 54 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Genesee County, NY, Livingston County, NY, Monroe County, NY, Ontario County, NY, Orleans County, NY, Wayne County, NY

The radar

The Buffalo radar (KBUF), 97 km from the middle of the area, began a volume at 13:06 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, 1.1 hours before the alert went out and 95 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.

234 
WWUS51 KBUF 081307
SQWBUF

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

NYC037-051-055-069-073-117-081400-
/O.NEW.KBUF.SQ.W.0001.200108T1306Z-200108T1400Z/
Wayne NY-Livingston NY-Orleans NY-Monroe NY-Genesee NY-Ontario NY-
806 AM EST Wed Jan 8 2020

The National Weather Service in Buffalo has issued a

* Snow Squall Warning for...
  Western Wayne County in western New York...
  Northeastern Livingston County in western New York...
  Southeastern Orleans County in western New York...
  Monroe County in western New York...
  Northeastern Genesee County in western New York...
  Northwestern Ontario County in western New York...

* Until 900 AM EST.

* At 806 AM EST, a dangerous snow squall was located over Gates-
  North Gates, moving southeast at 30 mph. This snow squall will 
  move through the Rochester area.

  HAZARD...Heavy snow and blowing snow. Wind gusts up to 30 mph.

  SOURCE...Radar indicated.

  IMPACT...Dangerous life-threatening travel.

* This includes the following highways...
   Interstate 390 between exits 11 and 12.
   Interstate 90 between exits 46 and 44.

Locations impacted include...
Rochester, Greece, Irondequoit, Chili, Brockport, East Rochester,
Hilton, Webster, Fairport and Brighton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.

&&

LAT...LON 4320 7818 4339 7789 4338 7773 4328 7754
      4332 7738 4333 7726 4331 7702 4297 7728
      4286 7757
TIME...MOT...LOC 1306Z 298DEG 27KT 4316 7769 

$$

Apffel

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, 8:20 AM EST	Snow Squall Warning	BUF	Oswego	55 min
Jan 8, 8:33 AM EST	Snow Squall Warning	BUF	Cattaraugus, Chautauqua	57 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.