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MEMPHIS, Tenn. — <\/span>Forecasters warned that dangerous extra-cold conditions will persist into Monday morning for a huge swath of the U.S. from the Gulf Coast into New England that was cleaning up after a weekend bomb cyclone<\/a> brought heavy snow and flight cancellations to North Carolina and flurries and falling iguanas in Florida. <\/p>\n Temperatures will begin inching up throughout the day but more misery was expected for thousands who were still without power from the ice storm last month in the South.<\/p>\n About 150 million people were under cold weather advisories and extreme cold warnings<\/a> Sunday in the eastern portion of the U.S., with single-digit temperatures in southern states and the coldest air mass in South Florida since December 1989, said Peter Mullinax, a National Weather Service meteorologist in College Park, Maryland.<\/p>\n The National Weather Service office for Raleigh, North Carolina, warned that wind chills will drop early Monday to near zero Fahrenheit (-17 Celsius). \u201cSnow and ice will linger, with refreezing tonight making travel hazardous,\u201d the office said Sunday on social media. \u201cUse caution on roads and dress in warm layers.\u201d<\/p>\n In eastern North Carolina, James City recorded 18 inches (45 centimeters) of snow, while Swansboro recorded 17 inches (43 centimeters), the weather service reported. <\/p>\n The bomb cyclone, known to meteorologists as an intense, rapidly strengthening weather system, contributed to nearly a foot (30 centimeters) of snow in and around Charlotte<\/a>, North Carolina\u2019s largest city. The snowfall represented a top-five snow event all time there, Mullinax said. <\/p>\n Flight cancellations exceeded 2,800 in the U.S. on Saturday, with at least another 1,800 on Sunday, according to FlightAware, a flight tracking and data company. More than 800 of those Sunday cancellations were for flights departing from or arriving at Charlotte Douglas International Airport.<\/p>\n The storm caused an hourslong mess on Interstate 85 northeast of the city, after a crash left dozens of semitractors and other vehicles backed up into Saturday evening, according to the State Highway Patrol. More than 1,000 traffic collisions and two road deaths were reported, North Carolina Gov. Josh Stein said Sunday. <\/p>\n \u201cIt\u2019s an impressive cold shot, for sure, and there are daily records that are being seen down in the South,\u201d Mullinax said. <\/p>\n The Tampa-St. Petersburg area in Florida saw snow flurries, while temperatures dropped to the 20s in the Panhandle and 30s in South Florida on Sunday. That left cold-stunned iguanas lying motionless on the ground. Iguanas in South Florida go dormant in the cold and though they usually wake when temperatures warm, the reptiles can die after more than a day of extreme cold. <\/p>\n The cold also left ice on strawberries and oranges in the state. Farmers in Florida sometimes spray water on fruit trees and berry plants to protect them from the cold. <\/p>\n More than 110 deaths connected to the wintry weather and storms have been reported around the U.S. since late January. In Tennessee and Mississippi, two states struck by a previous storm carrying snow and ice, more than 81,000 customers were still without electricity<\/a> by Sunday evening, according to the outage tracking website poweroutage.us<\/a>. <\/p>\n Nashville Electric Service said it expects 90% of its customers to have power restored Tuesday, with 99% getting electricity back by next Sunday, two weeks after the earlier storm hit. Gov. Bill Lee said he shared \u201cstrong concerns\u201d with leadership of the utility, which has defended its response and said the storm was unprecedented. <\/p>\n