Rain and possible thunderstorms are in the forecast for part of President Trump’s Saturday parade event celebrating the Army’s 250 the birthday — and his own 79th.

Large crowds are anticipated Saturday in D.C. for events marking the U.S. Army’s 250th anniversary — but the weather may not fully cooperate. A sluggish front drifting southward will probably spark showers and thunderstorms that threaten to disrupt the celebrations.

As Washington, D.C., prepares to host a parade celebrating the U.S. Army’s 250th birthday on Saturday, weather forecasters are warning of the potential for showers and thunderstorms that could disrupt the day’s events,