Joe Dandrea, a meteorologist with NWS San Diego, said from the radar, the ladybug bloom appears to be about 80 miles by 80 miles, but the ladybugs aren’t in a concentrated mass that size. Rather, they’re spread throughout the sky, flying at between 5,000 and 9,000 feet, with the most concentrated mass about 10 miles wide.

Source: Los Angeles Times June 05, 2019 05:26 UTC