Tardy Geyser is a smaller version of Sawmill Geyser. Like Sawmill, it is a fountain-type geyser, its bursting eruptions playing through a funnel shaped pool. Typical intervals range from minutes to hours. When in the Sawmill Mode, durations are usually measured in minutes but in the Penta-Churn Mode the may last hours. Maximum heights are usually about 10 feet but during a "deep drain" steamy bursts can reach 20 feet.
The name Tardy has been moved around a bit during the history of the park. It started on the current feature but at various times in the early history of the park was moved to what are now Turban Geyser and Old Tardy Geyser.