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Questions people ask

Lightning questions people ask, answered in one paragraph each

Updated September 10, 2026

Every page below starts with the answer, then explains it. All of them follow the National Weather Service and CISA lightning safety guidance, the same guidance Before It Strikes is built on.

Distance and timing

  • How far away is lightning safe?
  • How long after thunder is it safe to go outside?
  • What is a bolt from the blue?
  • Is heat lightning dangerous?

Apps and warnings

  • Is there an app that warns you before lightning strikes?
  • Does the iPhone weather app warn about lightning?
  • What is the lightning policy for youth sports?

The full guide

For the rings, the all-clear rules, safe shelters and the myths in one place, read the lightning safety guide.

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

Related

  • The lightning safety guide, in plain language
  • Is there an app that warns you before lightning strikes?

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.

© 2026 Before It Strikes · Made for stormy skies.