An earthquake that struck northern Oklahoma on Saturday night was felt across the entire state, including Tulsa—right after President Donald Trump finished his rally before thousands of attendees.
The National Weather Service (NWS) office in Tulsa also wrote that its staff felt the earthquake.
Thousands of earthquakes have been recorded in Oklahoma over the past several years, and some experts have linked them to fracking, or the underground injection of wastewater during oil and gas production. Regulators have called on producers to close some of the wells.
Some noted that the crowd size was smaller than what was expected, but Trump’s campaign wrote that the “rally in Tulsa attracted over 4 million unique viewers across all of the campaign’s digital media channels. The live-streamed pre-rally shows drew an audience of more than 2.5 million unique viewers by themselves,” adding that “these numbers don’t even include television viewers.”