December 5–6, 2020 nor'easter

[5] Several hours later, the system began to grow more organized, transitioning into an extratropical cyclone over North Carolina by 03:00 UTC on December 5.

[7] After this point, the nor'easter began to undergo bombogenesis, reaching an initial central pressure of 984 millibars (29.1 inHg) off the coast of Rhode Island at 18:00 UTC that day.

[14] Winter Storm Warnings were issued on December 4 and 5 in advance of heavy, wet snow and possible blizzard conditions across New England, including both Boston and Portland.

I-84 was closed in both directions from Tolland, Connecticut, to the Massachusetts state line for hours as a result of numerous crashes and a lack of snowplows.

[4] Massachusetts State Police lowered the speed limit to 40 mph on I-90 at noon on December 5 due to ongoing whiteout conditions on the roadways.

Much of Maine also faced whiteout and near-blizzard conditions for prolonged periods of time, resulting in numerous crashes on roadways.

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Tropical depression (≤38 mph, ≤62 km/h)
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Storm type
triangle Extratropical cyclone , remnant low, tropical disturbance, or monsoon depression
Whiteout conditions and poor road conditions in Warren, Massachusetts , on the afternoon of December 5