Ambient Weather Support

Lightning Detector WH31L Generates False Strikes

Lightning sensors detect a specific radio frequency wave form generated by lightning strikes.

However, electronic devices like motors starting (HVAC units, lawn equipment), and fluorescent lighting can emit noisy electromagnetic field (EMF) signature that can generate a false positive lightning strike.

To avoid false lightning strikes, move the detector away from any electrical noise-generating devices.

Although electrical noise can be random in nature, another way to determine installation location is by using a portable AM radio set in between stations where you can hear white noise only, and hold the radio close to the installation location. Any crackling heard on the radio may be detected by the WH31L lightning detector.