UFC White House weather suffers thunderstorm threat for Freedom 250

Severe thunderstorms could be an uninvited and unwanted guest during UFC Freedom 250 at the White House Sunday, June 14.

The highest chance of thunderstorms in Washington D.C. is at 8 p.m. ET, the scheduled start time for the mixed martial arts event coinciding with President Donald Trump's 80th birthday, according to the National Weather Service (NWS).

Thunderstorms were cropping up over Eastern Virginia and Western Virginia at about 6 p.m. and headed for Washington D.C., according the NWS.

The main threat window has narrowed to between 7 p.m. to 9 p.m. from an earlier forecast of 5 p.m to 10 p.m., according to NWS.

During that window, the chances for rain starts at 30%, peaks at 70% at 8 p.m., according to Pallozzi.

"Something will probably move through and there could be a lull and then maybe there could be something that moves in again," he said. "But I'd say those finer scale details are a little bit more uncertain at this point."

The chance of damaging winds, at least 50 mph, is 30%. The chance for tornados are 2% and the chance for hail is 5%, according to Pallozzi.

The winds could reach up to 70 mph, which would eleveate a thunderstorm into a severe thunderstorm, which is defined by a threat to life and property, according to the NWS.

On Friday, the poor weather and lightning in the area prompted the UFC to postpone a press conference by more than an hour.

But during the ceremonial weigh-in Saturday, the skies were clear and the event was free of rain.

The seven-fight card on Sunday is meant to commemorate the the 250th anniversary of the founding of America.

(This story has been updated with new information.)