Lightning Detector Guide for Outdoor Safety

August 15, 2025

3 minute read

Lightning strikes the UK around 200,000 times a year. While the odds of being hit are tiny, knowing when a storm is approaching can make all the difference. This is where the trusty handheld lightning detector comes into play. For the first time ever, Metcheck has added lightning detectors to the collection and we're here to explain the ins and outs of our newest launch.

Early Warnings for Dangerous Storms

The StrikeAlert Personal Lightning Detector is the latest addition to our collection, designed to give you early warning of dangerous weather wherever you are. This portable lightning detector is far more advanced than simply checking a weather app or waiting to hear thunder. The detector can identify lightning strikes up to 40 miles away using sensitive electromagnetic pulse detection. Whether that means you're out on the golf course, going for a hike, camping, or simply just spending time outdoors, this device will alert you of the proximity of the storm, giving you time to react and stay safe.

Simple Operations and Clear Alerts

Operation is quick and simple. Just turn it on, and a green light will confirm it's scanning for lightning activity. When lightning is detected, the StrikeAlert uses a combination of LED distance indicators and optional beeps alerts to show how close the storm is:

Blue light and one beep mean lightening is between 20-40 miles
Yellow light and two beeps signal 12-24 miles
Orange light and three beeps indicate 6-12 miles
Red light and four beeps warn that lightning is within 6 miles, which is your sign to seek immediate shelter.

The StrikeAlert even uses a trend of strike distances over the last five minutes, letting you know whether the storm is approaching or moving away, so you can make smarter safety decisions. By depressing the power button for one second, the LED display will change to one of three patterns:

If the LEDs cycle from green to red, the storm is approaching.
If the LEDs cycle from red to green, the storm is departing.
If the LEDs cycle from the centre LED to the outside LEDs, the storm is stationary or there is not enough data to determine the direction of the storm.

The detector can be clipped onto a belt loop, bag, or simply held in your hand perfect for when you're on the go. Powered by two AAA batteries, it offers up to 100 hours of continuous lightning detection, so it’s ready whenever you are.

Tips for Using The StrikeAlert Effectively

To ensure you get the most accurate results, keep the StrikeAlert at least 3-8 feet away from mobile phones, radios, or any other electronics as these can cause interference. The device works best outdoors; however, make sure to keep away from large metal structures or power lines. If you're using the device during a golf match or a day of hiking, clip it on an open area where it's not blocked by thick clothing or gear. Remember that lightning can still strike even if it's not raining, so take shelter immediately when the red alert activates. Always carry a spare set of AAA batteries if you're heading out on extended trips.

A Reliable Safety Companion

Thunderstorms can happen any time of year, but the most severe storms often strike in the summer when long sunny days give our atmosphere extra energy. On days like that, a Lightning Detector is the dependable lightning safety tool you need, trusted by outdoor professionals and enthusiasts alike. Always exercise extreme caution whenever outdoors during a thunderstorm.