The Coriolis Storm wipes the Deep Desert once a week, on Tuesday morning in each region's local server time. In UTC that is: North America Tuesday 10:00, South America Tuesday 08:00, Europe Tuesday 03:00, Oceania Monday 19:00, and Asia Monday 21:00. The countdowns above show the exact time remaining for your region.
No. The weekly Coriolis reset only applies to the shared multiplayer Deep Desert. In the single-player mode and on self-hosted servers there is no automatic weekly wipe — your bases in the Deep Desert are not deleted each week.
At the storm's apex, all player structures, deployables and vehicles in the multiplayer Deep Desert are destroyed, and the map layout, resource nodes and points of interest are re-randomised. Hagga Basin is not wiped.
The Coriolis Storm builds for roughly 8–10 hours before the reset, with in-game Communinet warnings in the final hours. The wipe happens at the apex — the moment each countdown above reaches zero.