Bomb Cyclone Plunges Southeast into Extreme Cold and Unseasonable Snow

Lead

A powerful winter storm, including a rapidly deepening low-pressure “bomb cyclone” along the East Coast, swept through the Southeast over the weekend, driving arctic air into regions unaccustomed to severe cold. Temperatures dropped into the 20s in parts of southern Florida on Sunday morning, the coldest readings there since 1989, the National Weather Service reported. The system produced heavy snow across parts of the Carolinas, with some areas receiving a foot or more, and it disrupted travel and power for hundreds of thousands of customers across multiple states. States including Mississippi, Tennessee and North Carolina reported widespread outages, dozens of storm-related deaths and state emergency actions.

Key Takeaways

• Southern Florida recorded temperatures in the 20s on Sunday morning, the lowest since 1989, and numerous local sites set new record lows for the date.
• The Florida Fish and Wildlife Conservation Commission issued an order allowing removal and collection of live cold-stunned iguanas after the reptiles began falling from trees.
• Charlotte, North Carolina, and surrounding areas saw localized snowfall totals exceeding a foot, surpassing typical seasonal accumulation for some locales.
• Charlotte Douglas International Airport logged more than 840 canceled flights and at least 195 delays by Sunday afternoon, according to FlightAware.
• North Carolina reported over 1,000 traffic accidents and two storm-related deaths; the governor urged residents to remain off roads and declared a state of emergency the prior week.
• As of Sunday afternoon, more than 50,000 customers lacked power in Mississippi and over 30,000 in Tennessee; state officials reported 23 deaths in Mississippi and 21 in Tennessee tied to the wider storm system.
• Emergency services and fire departments posted repeated warnings about stranded vehicles and hazardous road conditions across the region.

Background

Bomb cyclones are intense midlatitude cyclones that undergo rapid pressure drops — typically 24 millibars or more in 24 hours — and they can drive strong winds and transport very cold air masses far from their usual ranges. This event followed a week in which the northern and central East Coast already experienced snow, ice and coastal flooding, leaving some infrastructure stressed before the Southeast impact. Florida, particularly South Florida, has relatively few homes built for prolonged deep cold and large portions of the population rarely encounter such low temperatures, which raises risks for vulnerable residents and infrastructure.

Historically, southern Florida has seen cold snaps — notably in the early 1980s — but such events are now less frequent, climate scientists say, making preparedness and public expectations different than in colder states. The storm’s track and rapid intensification combined with a cold continental airmass funneled unusually low temperatures into the peninsula even as the system produced heavy wet snow and icing from the Carolinas into parts of the mid-Atlantic. Emergency managers and state authorities moved to limit travel, protect critical services and direct resources to the hardest-hit counties ahead of and during the event.

Main Event

On Saturday into Sunday, the bomb cyclone pushed bitterly cold air into the Southeast. National Weather Service offices in Florida reported record-setting low readings at climate sites, and the agency warned of freezing conditions and ‘bitterly cold air’ moving down the peninsula. In urban areas such as Columbia, South Carolina, and Charlotte, North Carolina, snowfall accumulated quickly; some communities recorded totals that exceed what they might expect in an entire typical winter season.

Transportation systems were severely affected. Charlotte Douglas International Airport saw more than 840 cancellations and nearly 200 delays by Sunday afternoon, creating cascading disruptions for travelers and logistics. Local emergency services, including Kannapolis Fire and Police, posted urgent social messages urging residents to shelter in place and avoid driving after reporting dozens of stranded vehicles and impassable interstates.

State-level responses included declarations of emergency and public pleas to remain indoors. North Carolina Governor Josh Stein urged people to stay off roads to allow crews to clear highways and for law enforcement to respond to incidents; officials said the state recorded over 1,000 traffic accidents and two fatalities linked to storm conditions. In the Deep South, prolonged power outages persisted: Mississippi reported more than 50,000 customers without electricity and Tennessee more than 30,000 as of Sunday afternoon.

In South Florida, the cold produced unusual wildlife impacts. Cold-stunned green iguanas — reptiles that go immobile at low temperatures — began falling from trees and accumulating in public spaces, prompting the Florida Fish and Wildlife Conservation Commission to authorize removal and collection at designated locations to reduce public-safety hazards.

Analysis & Implications

The storm illustrates how a single intense cyclone can produce a range of hazards across a broad latitudinal swath: coastal flooding and ice in the mid-Atlantic and Northeast, heavy snow in the mid-Atlantic and Carolinas, and extreme cold in the deep South. For regions like southern Florida, limited cold-weather infrastructure and lower public expectation of severe cold magnify the human and logistical impacts even when temperatures are within historical extremes for the continental United States.

Power infrastructure in several states showed vulnerability when sustained demand and weather-related damage coincided. Tens of thousands remained without power in Mississippi and Tennessee for days, and the reported fatalities in those states highlight the human toll that prolonged outages and cold exposure can produce. Restoring power and heating to large numbers of customers is likely to strain utilities and mutual-aid agreements well into the coming week.

Transportation and supply chains are also affected beyond immediate flight cancellations. Road closures, hundreds of accidents and stranded vehicles in areas unaccustomed to winter conditions disrupt freight movements and emergency response, and they increase the risk of secondary incidents. Local governments face trade-offs between mobilizing crews to clear roads quickly and keeping workers safe in dangerous conditions.

Looking ahead, forecasters expect the core low to move northeast and weaken, but the cold air mass will linger. The primary operational concerns are prolonged restoration of power in vulnerable communities, preventing cold-related injuries and deaths among populations without adequate heating, and avoiding additional accidents as thaw-refreeze cycles create black-ice hazards on treated and untreated pavement.

Comparison & Data

The table summarizes confirmed counts reported by state and federal agencies and flight-tracking services as of Sunday afternoon. These figures are operational snapshots and subject to revision as utilities and emergency managers update assessments. The combination of deep cold in southern latitudes and heavy, wet snow in the Carolinas is unusual in its spatial breadth and contributes to the high disruption tally across multiple sectors.

Reactions & Quotes

Officials from the National Weather Service in Melbourne highlighted the temperature records and warned of hazards related to the sudden cold. Their social media statement emphasized the breadth of the temperature departures across climate sites.

‘All of our climate sites set new record lows for the date this morning’

National Weather Service — Melbourne office

Local emergency responders in the Charlotte region issued direct safety guidance as crews encountered stranded vehicles and closed roadways. Authorities used social channels to urge residents to avoid travel during peak hazard periods.

‘Shelter in place! Get off the roads!’

Kannapolis Fire and Police

North Carolina’s governor framed the storm as atypical for the state and reiterated the need for public cooperation as crews worked to clear highways and restore safety.

‘This is the kind of snowstorm that we don’t get very often in North Carolina … stay off the roads’

Governor Josh Stein

Unconfirmed

• Final attribution of each reported fatality to direct storm effects remains under investigation by local coroners and officials in some counties.
• Exact, county-level durations of power loss and the final total of customers affected may change as utility companies complete system-wide damage assessments.
• Estimates of long-term infrastructure damage and economic cost are preliminary and will require consolidated damage surveys across multiple states.

Bottom Line

The bomb cyclone produced a rare combination of deep cold in the southern U.S. and heavy snow in parts of the mid-Atlantic and Southeast, creating widespread travel disruption, prolonged power outages and a mounting human toll. Regions unaccustomed to such cold — particularly South Florida — face elevated risks because of limited cold-weather infrastructure and public expectations.

Officials and utilities will focus in the coming days on power restoration, supporting vulnerable residents without heat, and clearing roads safely as temperatures fluctuate. Residents should follow local emergency guidance, avoid nonessential travel while crews work, and report hazards to authorities to reduce preventable injuries and fatalities.

Sources

• NPR — (national public radio report)
• National Weather Service — (federal meteorological agency; local office statements)
• FlightAware — (flight-tracking service for airport cancellation and delay counts)
• Florida Fish and Wildlife Conservation Commission — (state agency; executive order on cold-stunned iguanas)