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Blizzard of March 12–14, 2018

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

Blizzard of March 12–14, 2018

Blizzard of March 12–14, 2018

Chapter 3 · The peak

241,556 customers out in Massachusetts.

Winds reach 81 mph at East Falmouth; the low bottoms out at 966 mb at 21:00 UTC.

18:30UTC · Tue, Mar 13, 2018 · 2:30 PM EDT

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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 · WS20180312

Blizzard of March 12–14, 2018: the story

Mar 12, 00:00 UTC – Mar 15, 00:00 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 3.16), and ranks it 51st on its list.

  • 157 NWS warnings
  • 4,263 storm reports
  • 21 WPC surface-low analyses
  • 10 FAA airport programs
  • 2 rule-based links
  • 241,556 customers out at the peak, in Massachusetts
  • 433 radar frames, 10 min apart

The bomb

Mar 12–13

  1. Bombogenesis: the low's pressure has fallen 22 mb in 24 hours, to 989 mb.Replay from here

Blizzard Warnings

Mar 13

  1. NWS Boston / Norton, MA issues the first Blizzard Warning.Replay from here

The peak

Mar 13

  1. The strongest wind reported: 81 mph at East Falmouth, MA.Replay from here
  2. Peak outages: 241,556 customers out of power in Massachusetts. The most in one county: Barnstable County, MA, 128,268 out (share unknown) at 16:30 UTC on Mar 14.Replay from here
  3. The low is at its deepest: 966 mb.Replay from here

The snow totals

Mar 14

  1. The largest snow report: 35 in at Woodford, VT.Replay from here

How we link records

RuleWhat it checksLinks
R2 dashedAn airport program inside a warning that had been in effect for over 60 min (context)2

Solid lines mark rules that passed an independent check; dashed lines are context. Links are rule-based facts: each shows two records that overlap in place and time. How we know

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 MesonetMar 12, 00:00 UTC – Mar 15, 00:00 UTC433
NWS storm-based warning polygonsNOAA National Weather Service via Iowa Environmental MesonetMar 12, 00:00 UTC – Mar 15, 00:00 UTC157
NWS Local Storm ReportsNOAA National Weather Service via Iowa Environmental MesonetMar 12, 00:00 UTC – Mar 15, 00:00 UTC4,263
WPC coded surface bulletinsNOAA Weather Prediction Center via Iowa Environmental MesonetMar 12, 00:00 UTC – Mar 15, 00:00 UTC21
NOHRSC snowfallNOAA National Operational Hydrologic Remote Sensing CenterMar 12, 00:00 UTC – Mar 15, 00:00 UTC
FAA airport programs (ground stops and ground delay programs)FAA Air Traffic Control System Command CenterMar 12, 00:00 UTC – Mar 15, 00:00 UTC10
ORNL EAGLE-IOak Ridge National LaboratoryMar 12, 00:00 UTC – Mar 15, 00:00 UTC622
  • 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)
  • Power outages: Oak Ridge National Laboratory, EAGLE-I (CC BY 4.0)
  • County boundaries: U.S. Census Bureau