Alert archive / Pennsylvania / Winter Weather Advisories in 2021

Winter Weather Advisory 13, NWS Binghamton, NY

February 17, 20215 counties in New York; 7 counties in Pennsylvania

NWS Binghamton, NY issued this winter weather advisory at Feb 17, 2021, 3:12 PM EST for 5 counties in New York; 7 counties in Pennsylvania. It took effect at Feb 18, 2021, 1:00 AM EST. It was in force for 35 hr.

The area

The counties it named.

The facts

Issued: Feb 17, 2021, 3:12 PM EST (20:12 UTC)
In effect from: Feb 18, 2021, 1:00 AM EST
Expired: Feb 19, 2021, 11:48 AM EST
In force: 35 hr
Issued by: NWS Binghamton, NY

Counties Broome County, NY, Chemung County, NY, Delaware County, NY, Sullivan County, NY, Tioga County, NY, Bradford County, PA, Lackawanna County, PA, Luzerne County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA

The radar

The Binghamton radar (KBGM), 53 km from the middle of the area, began a volume at 20:11 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

Brookhaven, NY (KOKX), launched 12:00Z, 8.2 hours before the alert went out and 260 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: 1197 m above ground
0-6 km bulk shear: 90 kt
0-1 km storm-relative helicity: -178 m²/s²
0-3 km storm-relative helicity: -11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Binghamton, NY wrote its last area forecast discussion before this winter weather advisory went out at Feb 17, 12:47 PM EST, 2 hours 25 minutes earlier.

Area forecast discussion, Feb 17, 12:47 PM EST, 2 hours 25 minutes before

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Hazardous weather outlook, Feb 17, 3:18 AM EST, 11 hours 54 minutes before

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In the hours before

Local storm report, Feb 17, 9:31 AM EST, 5 hours 41 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 16, 9:40 PM EST	Special Weather Statement	BGM	Broome	50 min

Nearby

Winter Weather Advisories in Pennsylvania, 2021 Winter Weather Advisories in New York, 2021 Every winter weather advisory 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.