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Question

Does the iPhone weather app warn about lightning?

Updated September 10, 2026

Not really. The built-in iPhone Weather app shows government severe weather alerts such as severe thunderstorm warnings, and it shows rain on its radar, but it does not track lightning strikes or warn you when lightning is approaching your location. Most lightning happens with no warning issued at all, because a warning requires a storm severe enough to meet wind or hail criteria, not simply lightning.

What the built-in app does

It relays official alerts from the National Weather Service, including severe thunderstorm and tornado warnings, and it shows a precipitation map. Both are useful, and Before It Strikes shows the same official alerts too.

What it does not do

  • It does not detect lightning. No strike data, no distance, no direction.
  • It does not warn for ordinary thunderstorms. A severe thunderstorm warning requires 58 mile per hour wind or one inch hail. A storm that only produces lightning, which is most of them, gets no warning.
  • It has no shelter countdown and no all-clear.

What a lightning app adds

Before It Strikes watches real-time lightning detection and warns you as a storm crosses the 15, 12 and 8 mile rings around your places, before the first nearby strike where it can. It shows the nearest strike's distance and direction, and it runs the countdown until it is safe to go back out. It is free on iOS and works alongside the built-in app. More on what it does.

Quick answers

Does the iPhone Weather app warn about lightning?

It relays official severe weather alerts and shows rain, but it does not detect lightning or warn you when strikes approach. Most lightning occurs without any warning being issued.

Why did I get no warning before lightning?

A severe thunderstorm warning requires damaging wind or large hail. A storm that only produces lightning usually gets no warning, so a dedicated lightning app is needed for lightning itself.

Get Before It Strikes on iOS For schools, camps and venues

Related

  • Is there an app that warns you before lightning strikes?
  • The lightning safety guide, in plain language
  • How far away is lightning safe?

Guidance on this page follows the National Weather Service lightning safety toolkit and the Lightning Safety Guide for Sports and Special Events published by CISA and the National Center for Spectator Sports Safety and Security (May 2026). Official NWS warnings always take precedence.

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Before It Strikes surfaces official National Weather Service products as the authoritative source of truth. Derived layers (lightning risk, rotation) are experimental situational awareness only and must never be used in place of official warnings or lightning-safety guidance. When in doubt, seek shelter.

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