Bowden says he and his dog were in his camper at Prairie View RV Park early Tuesday when powerful winds picked it up and slammed it down on the ground.
Schwartzenberger said his onsite commander reported 122 structures in the park were completely destroyed. "It's unbelievable how many people are coming through and just want to contribute".
Ken Simosko, National Weather Service meteorologist in Bismarck, said a severe thunderstorm warning with the possibility of a tornado was issued about 60 minutes in advance of the storm. "We are very thankful that their young son Tristan was having a sleepover that night and was unharmed", said Sheila Anderson, who created the GoFundMe page. They were taken to McKenzie County Hospital, with at least three being transported by aircraft and six listed in critical condition, the sheriff's office said in a statement.
National Weather Service meteorologist John Paul Martin classified the tornado as an EF2, which is defined by wind speeds between 111 and 135 miles per hour.
McKenzie County Sheriff Gary Schwartzenberger says the storm went over his house and down into the park about half a mile away.
Schwartzenberger said the park residents were allowed back Tuesday afternoon to collect their belongings. An additional 79 structures suffered moderate damage and 120 suffered minor damage.
Karolin Jappe, the McKenzie County Emergency Manager, told the Associated Press that Prairie View was "an oversized RV park on steroids", a byproduct of the need for housing due to the shale oil boom in North Dakota and Watford City. Cleanup operations were scheduled to resume Wednesday.
Clifford Bowden, 37, was in his recreational vehicle when the storm struck.
Schwartzenberger said there are numerous shelters in the city, some of them within minutes of the RV park. He has been staying along with dozens of others at the Watford City Civic Center where the Red Cross has established a shelter.
North Dakota Lt. Gov. Brent Sanford, a former Watford City mayor who has a home in the city, and Gov. Doug Burgum surveyed the damage Tuesday and met with local officials and displaced residents.
About 28 trailer park residents were also injured when the storm hit Watford City.