Vaisala Lightning Explorer
Vaisala Lightning Explorer displays recent lightning activity across the entire continental U.S. The lightning data displayed is 20 minutes delayed and updated every 20 minutes. Get the latest map available by clicking your browser "Refresh" button. The map shows a 2-hour time period with lightning data color coded in 20-minute increments.
Lightning Data from the U.S. National Lightning Detection Network
Vaisala Lightning Explorer uses lightning data from Vaisala's U.S. NLDN, the most reliable lightning detection system in the U.S. The U.S. NLDN constantly detects lightning discharges anywhere in the continental U.S. Each symbol on the map represents one recorded lightning event.