The Federal Aviation Administration (FAA) implemented a ground stop at San Francisco International Airport on Monday night, April 20, 2026, as inclement weather moved through the region. The suspension of operations began at approximately 9:20 p.m. following a surge in wind speeds and widespread rainfall across the Bay Area.
Flight operations remained restricted through 10:45 p.m., though transportation officials indicated that the likelihood of an extension for the ground stop remained below 30 percent. Arriving flights at SFO faced significant disruptions during this period, with the FAA reporting average delays lasting 2 hours and 40 minutes.
Regional transportation authorities have urged passengers to verify their flight status directly with airlines to determine the extent of individual delays. Travelers are further encouraged to arrive at the airport early over the next several days as windy and rainy conditions are expected to continue.
KTVU meteorologists characterized the current weather as an unsettled pattern that will transition into a second phase on Tuesday. This upcoming shift is expected to produce intermittent heavy rainfall and potential thunderstorms involving hail throughout the area.