Alert archive / New York / Snow Squall Warnings in 2021

Snow Squall Warning 2, NWS Binghamton, NY

February 20, 20214 counties in New York

NWS Binghamton, NY issued this snow squall warning at Feb 20, 2021, 12:57 PM EST for 4 counties in New York. It was in force for 63 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
Feb 20, 2021, 12:57 PM EST (17:57 UTC)
Expired
Feb 20, 2021, 2:00 PM EST
In force
63 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon

Counties Cayuga County, NY, Chenango County, NY, Cortland County, NY, Onondaga County, NY

The radar

The Binghamton radar (KBGM), 57 km from the middle of the area, began a volume at 18:00 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

Albany, NY (KALY), launched 12:00Z, 6.0 hours before the alert went out and 185 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, Albany, NY at 12:00Z on 2021-02-20Temperature 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, Albany, NY at 12:00Z on 2021-02-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -93 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
920 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
-93 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

037 
WWUS51 KBGM 201758
SQWBGM

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Binghamton NY
1257 PM EST Sat Feb 20 2021

NYC011-017-023-067-201900-
/O.NEW.KBGM.SQ.W.0002.210220T1757Z-210220T1900Z/
Cayuga NY-Cortland NY-Onondaga NY-Chenango NY-
1257 PM EST Sat Feb 20 2021

The National Weather Service in Binghamton has issued a

* Snow Squall Warning for...
  Southern Cayuga County in central New York...
  Cortland County in central New York...
  Southwestern Onondaga County in central New York...
  Northern Chenango County in central New York...

* Until 200 PM EST.

* At 1257 PM EST, a dangerous snow squall was located along a line
  extending from Tully to Fleming, moving southeast at 25 mph.

  HAZARD...Very poor visibility in heavy snow and blowing snow. Wind 
           gusts up to 30 mph.

  SOURCE...Radar indicated.

  IMPACT...Dangerous life-threatening travel.

Locations impacted include...
Cortland, Norwich, Owasco, Homer, Fleming, Otisco, Preble, Moravia,
Niles and Scott.

This includes the following highway exits...
 New York Interstate 81 between 10 and 14.
 
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 4288 7613 4276 7589 4272 7589 4273 7583
      4251 7541 4253 7619 4258 7626 4262 7627
      4262 7632 4290 7671
TIME...MOT...LOC 1757Z 302DEG 23KT 4282 7611 4286 7653 

$$

HLC

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 20, 9:36 AM ESTSpecial Weather StatementBGMBroome, Chenango, Cortland, Tioga, Tompkins54 min
Feb 20, 1:23 PM ESTSnow Squall WarningBGMChenango, Delaware, Otsego67 min
Feb 20, 2:29 PM ESTSpecial Weather StatementBGMChenango, Delaware31 min
Feb 20, 3:35 PM ESTSpecial Weather StatementBGMTompkins55 min
Feb 20, 4:14 PM ESTSpecial Weather StatementBGMBroome, Chemung, Tioga46 min
Feb 20, 4:58 PM ESTSpecial Weather StatementBGMBroome, Chemung, Tioga47 min
Feb 20, 5:27 PM ESTSnow Squall WarningBGMBroome, Tioga48 min
Feb 20, 5:56 PM ESTSnow Squall WarningBGMChemung, Schuyler, Tioga, Tompkins49 min
Feb 20, 6:14 PM ESTSpecial Weather StatementBGMTioga61 min

Nearby

Snow Squall Warnings in New York, 2021Every snow squall warning 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.