Where the original projection ended, a smaller, black circle that appeared to be drawn in sharpie was produced to include Alabama in the model.
"But that was the original chart", he said. "It could've, uh, was going towards the Gulf", Trump explained in the video.
According to the Washington Post, Trump repeatedly said "I don't know" when asked if the map had been doctored.
As the storm was approaching the USA on Sunday, Trump said at a briefing that it could threaten much of the southeast including Alabama - despite official projections that didn't show the hurricane approaching the Gulf Coast state.
Trump also insisted during the press gaggle that "other, better maps" included Alabama in the potentially storm-affected areas.
A map the president held up earlier in the day had been altered to include Alabama. Instead, the office urged caution from residents in "the Bahamas, Florida, and elsewhere in the southeastern United States". "In addition to Florida - South Carolina, North Carolina, Georgia, and Alabama, will most likely be hit (much) harder than anticipated", he wrote in a now-deleted tweet. "The system will remain too far east". Trump was getting multiple daily briefings about the storm.
The White House did not immediately return a request for comment from DailyMail.com about the map and why it failed to disclose that it had been changed.
Altering official government weather forecasts isn't just a cause for concern - it's actually illegal.
As weather analyst Dennis Mersereau noted on Twitter Wednesday, it is a federal crime to knowingly issue a "counterfeit weather forecast" or other weather-related warning that "falsely" implies the forecast is a publication of the USA government.