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Winter Storm of December 16–18, 2020

1 of 2 · The storm's data
forty°seventy

Winter Storm of December 16–18, 2020

Winter Storm of December 16–18, 2020

Chapter 1 · The storm arrives

The storm moves up the East Coast.

The replay opens as the snow begins.

00:00UTC · Wed, Dec 16, 2020 · 7:00 PM EST Tue

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Replay of past events. For current weather and warnings, see weather.gov. Links are rule-based facts. About and credits

Replay · WS20201216

Winter Storm of December 16–18, 2020: the story

Dec 16, 00:00 UTC – Dec 18, 06:00 UTC. Radar showing snow and rain, winter warnings, storm reports and the surface low's track from the Weather Prediction Center, in order. NCEI's Northeast Snowfall Impact Scale rates it Category 2, Significant (NESIS 3.21), and ranks it 50th on its list.

  • 92 NWS warnings
  • 5,537 storm reports
  • 17 WPC surface-low analyses
  • 3 FAA airport programs
  • 325 radar frames, 10 min apart

The storm arrives

Dec 16

The replay opens as the snow begins.

Replay from here

Overnight

Dec 17

  1. The strongest wind reported: 74 mph at Eatons Neck, NY.Replay from here
  2. The low is at its deepest: 996 mb.Replay from here

The snow totals

Dec 17–18

  1. The largest snow report: 45 in at Vestal, NY.Replay from here

Where this storm's data comes from

Every layer, the provider behind it and the period it covers.

LayerProviderPeriodRecords
MRMS SeamlessHSRNOAA/NSSL via Iowa Environmental MesonetDec 16, 00:00 UTC – Dec 18, 06:00 UTC325
NWS storm-based warning polygonsNOAA National Weather Service via Iowa Environmental MesonetDec 16, 00:00 UTC – Dec 18, 06:00 UTC92
NWS Local Storm ReportsNOAA National Weather Service via Iowa Environmental MesonetDec 16, 00:00 UTC – Dec 18, 06:00 UTC5,537
WPC coded surface bulletinsNOAA Weather Prediction Center via Iowa Environmental MesonetDec 16, 00:00 UTC – Dec 18, 06:00 UTC17
NOHRSC snowfallNOAA National Operational Hydrologic Remote Sensing CenterDec 16, 00:00 UTC – Dec 18, 06:00 UTC
FAA airport programs (ground stops and ground delay programs)FAA Air Traffic Control System Command CenterDec 16, 00:00 UTC – Dec 18, 06:00 UTC3
  • Radar: NOAA/NSSL MRMS SeamlessHSR, via the Iowa Environmental Mesonet (IEM), Iowa State University
  • Warnings: NOAA/NWS, storm-based polygons via the Iowa Environmental Mesonet
  • Storm reports: NOAA/NWS Local Storm Reports via the Iowa Environmental Mesonet
  • Storm track: NOAA/NWS Weather Prediction Center coded surface bulletins, via the Iowa Environmental Mesonet
  • Airport programs: FAA Air Traffic Control System Command Center
  • Filings: U.S. Securities and Exchange Commission EDGAR
  • Snowfall: NOAA/NWS National Operational Hydrologic Remote Sensing Center (NOHRSC)