Alert archive / New York / Snow Squall Warnings in 2019

Snow Squall Warning 13, NWS Buffalo, NY

December 31, 20194 counties in New York

NWS Buffalo, NY issued this snow squall warning at Dec 31, 2019, 2:44 PM EST for 4 counties in New York. It was in force for 61 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: Dec 31, 2019, 2:44 PM EST (19:44 UTC)
Expired: Dec 31, 2019, 3:45 PM EST
In force: 61 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Cayuga County, NY, Jefferson County, NY, Oswego County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 49 km from the middle of the area, began a volume at 19:45 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, 7.7 hours before the alert went out and 213 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 730 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

848 
WWUS51 KBUF 311945
SQWBUF

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Buffalo NY
244 PM EST Tue Dec 31 2019

NYC011-045-075-117-312045-
/O.NEW.KBUF.SQ.W.0013.191231T1944Z-191231T2045Z/
Wayne NY-Jefferson NY-Cayuga NY-Oswego NY-
244 PM EST Tue Dec 31 2019

The National Weather Service in Buffalo has issued a

* Snow Squall Warning for...
  Eastern Wayne County in western New York...
  Jefferson County in central New York...
  Cayuga County in central New York...
  Oswego County in central New York...

* Until 345 PM EST.

* At 244 PM EST, a dangerous snow squall was located along a line
  extending from 12 miles northwest of Fair Haven Beach State Park to
  near Lyons, moving northeast at 45 mph.

  HAZARD...Poor visibility in snow and blowing snow. Wind gusts 
           greater than 30 mph.

  SOURCE...Radar and webcams.

  IMPACT...Dangerous life-threatening travel.

* This includes the following highways...
   Interstate 90 near exit 40.
   Interstate 81 between exits 32 and 52.

Locations impacted include...
Watertown, Oswego, Fulton, Sandy Island Beach State Park, Fair Haven
Beach State Park, Stony Point, Pulaski, Clyde, Clayton and Central
Square.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4440 7583 4439 7584 4436 7576 4322 7608
      4327 7620 4320 7621 4324 7626 4323 7626
      4323 7648 4303 7650 4301 7698 4334 7688
      4356 7645 4358 7626 4387 7635 4387 7650
      4396 7644 4396 7634 4410 7643 4429 7615
TIME...MOT...LOC 1944Z 245DEG 41KT 4351 7680 4301 7699 

$$

Thomas

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 30, 9:53 PM EST	Small Craft Advisory	BUF		54 hr
Dec 31, 4:32 AM EST	Winter Storm Warning	BUF	Jefferson, Lewis, Oswego	35 hr
Dec 31, 4:32 AM EST	Winter Weather Advisory	BUF	Cattaraugus, Chautauqua, Erie, Wyoming	29 hr
Dec 31, 11:29 AM EST	Lakeshore Flood Advisory	BUF	Chautauqua, Erie	10 hr
Dec 31, 1:22 PM EST	Snow Squall Warning	BUF	Allegany, Cattaraugus, Livingston, Monroe, Ontario, Wayne and 1 more	38 min
Dec 31, 1:54 PM EST	Special Weather Statement	BUF	Chautauqua	51 min
Dec 31, 2:01 PM EST	Snow Squall Warning	BUF	Allegany, Cattaraugus, Livingston, Monroe, Ontario, Wayne	44 min
Dec 31, 3:44 PM EST	Snow Squall Warning	BUF	Jefferson, Lewis, Oswego	61 min
Dec 31, 3:50 PM EST	Special Weather Statement	BUF	Erie, Genesee, Wyoming	55 min
Dec 31, 4:45 PM EST	Snow Squall Warning	BUF	Lewis	45 min
Dec 31, 4:48 PM EST	Special Weather Statement	BUF	Wyoming	57 min

Nearby

Snow Squall Warnings in New York, 2019 Every snow squall warning in 2019

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.