Los Angeles International Airport was subject to a ground stop Monday afternoon due to possible thunderstorms, according to the Federal Aviation Administration and National Weather Service.
Departures from a number of airports in nearby states — including Phoenix, Denver and Salt Lake City — were grounded as a precaution between 3:25 p.m. and 4:45 p.m. Monday, an FAA site showed.
The probability of a time extension was listed as medium, or 30% to 60%.
The NWS forecasted a 30% probability of thunderstorms near Palmdale on Monday afternoon and a high of 98 degrees. The airports subject to grounding were those at a distance where flights would pass over the area during a possible thunderstorm.
The storms come amid a surge of monsoonal moisture and instability across the Western U.S., which has brought dangerous dry lightning, major dust storms and rare summer rain over the last few days.
Similar ground stops at Long Beach Airport and John Wayne airport expired at 4 p.m., the FAA site showed.