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Large lightning strike hits the ocean at night close to Sunny Isles Beach.

Thor Guard Lightning Prediction System

(Tuesday, May 21, 2019) – Florida leads the country in both number of fatal hits and density of lightning strikes each year, and residents should be aware that all of our City parks are equipped with a Thor Guard Lightning Prediction system that provides advance notice of lightning conditions. This system is active 365 days a year in our City.

If the horn sounds one long blast, that means lightning is predicted in the area and everyone should get to a safe indoor location immediately. Park personnel will clear the park, closing and locking the gates. When the all clear is sounded–three short horns–the park will re-open within 10 to 15 minutes to ensure the weather system has fully passed.

  • ONE long horn blast indicates possible lightning in the area
  • Get TO a safe indoor area quickly
  • THREE shorter horn blasts signal that is is safe to return to the park