Lightning Map Portland, ME
Real-time lightning tracking for Portland, Maine. This city averages 20 thunderstorm days per year, making lightning awareness important for Portland residents and visitors.
Data sourced from NOAA GOES-19 GLM and the Storm Prediction Center.
Real-Time Lightning Near Portland
Monitor live lightning strikes and approaching storms
Live Lightning Data for Portland
App links are added after release. For now, use this city page plus the nearby-lightning and alert guides to make faster weather and safety calls in Portland.
App links go live at release. For now use the lightning maps and guides on this site.
Thunderstorm Season in Portland
When to expect lightning activity in Portland, ME
Portland sees most of its thunderstorm activity between May and August, with June and July being the peak months. Storms are typically driven by frontal systems and can develop rapidly during warm, humid afternoons. The transition months of May and September can also bring significant lightning.
Compared to the national average of approximately 25 thunderstorm days per year, Portland sees 5 fewer days of thunderstorm activity. The Maine statewide average is 20 days.
Lightning Safety Tips for Portland
Essential guidelines to stay safe during thunderstorms
30-30 Rule
When you see lightning, count to 30. If you hear thunder before reaching 30, get indoors. Wait 30 minutes after the last thunderclap before going outside.
Seek Shelter
With 20 thunderstorm days annually, residents of Portland should always have a shelter plan. Move inside a substantial building or hard-topped vehicle.
Stay Informed
Use Lightning Tracker to monitor real-time lightning near Portland. Set alerts for your neighborhood to get advance warning of approaching storms.
Avoid Open Areas
Stay away from open fields, hilltops, isolated trees, and bodies of water during storms. If hiking, descend from ridges and peaks immediately.
Useful Guides for Portland
These guides match the nearby-lightning and alert questions people ask most often
Use this guide to judge nearby strike danger fast, especially when storms are building near your neighborhood.
Alerts Best alert options for Portland stormsSee how app alerts, NOAA weather radio, and local warnings work when storms move toward your city.
Map guide How to read live lightning around PortlandUnderstand strike clusters, motion, and timing so you can decide when to get indoors.
Nearby Cities in Maine
Monitor lightning in other Maine cities