I can’t verify the specific production from the information available here, but I can say there is at least one known film shoot history at Hempstead Lake State Park, including the short film “Sorry” shot there years ago.

For the 2026 trucks, tents, and equipment you’re seeing, the most likely explanation is that a new film or TV production has set up in the park, but I don’t have a confirmed title to name.

What’s known

  • Hempstead Lake State Park has been used for filming before.
  • Public Long Island coverage confirms the area is a recurring production location for TV and movies.
  • I don’t see a reliable public source in the available information that names a 2026 project at the park.

Best read on it

The scene you describe sounds like a standard location shoot: production trucks, tents, and equipment usually mean filming is active, but not necessarily that the title has been publicly announced. A lot of productions in New York keep location details vague until later, especially for exterior park scenes.

TL;DR

I can confirm Hempstead Lake State Park has been a filming location, but I cannot confidently identify the 2026 movie from the available public information.