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Disaster Preparedness

Catch Lightning Before It Strikes: The Thunder Meter Early Warning System

Vasta Giken Co., Ltd.
External Antenna and Thunder Meter Main Unit

External Antenna and Thunder Meter Main Unit

Prevent Tragic Accidents with Critical 10 to 15-Minute Early Warnings Before Lightning Strikes

Is Your Facility Truly Prepared for a Lightning Strike? Lightning strikes are a lethal threat with a 30% mortality rate, claiming over 1,000 lives globally every year. Many assume that lightning rods alone provide complete safety. However, the massive electrical surge can cause secondary discharges in the surrounding area, which can be fatal. True safety depends on proactive detection and having enough time to evacuate. The Thunder Meter is engineered to detect intermediate signals from any type of lightning, triggering an immediate alert. Widely adopted across Japan at golf courses and outdoor facilities, it serves as the definitive lifesaving solution to prevent tragic accidents.

Thunder Meter Multi-Level Warning Indicators

Thunder Meter Multi-Level Warning Indicators

What is the Thunder Meter?

The Thunder Meter is a professional-grade detection system that monitors atmospheric electrical fields to provide a 10 to 15-minute lead time before a lightning storm arrives. It accurately tracks lightning within a 25-mile radius, including incoming storms and the most dangerous overhead strikes that develop directly above your location. It covers approaching storms with or without active discharges, and lightning forming nearby before the first strike. The system detects all types of rapidly developing frontal thunderstorms.

The built-in analog meter allows operators to monitor real-time storm development at a glance. Integrated external outputs support warning lamps and automated email notifications via PC for seamless facility management.

Note:Please note that localized adjustments are required to ensure optimal performance based on the specific environmental conditions of each country.
Lightning Detection and Monitoring Zones

Lightning Detection and Monitoring Zones

Detection Patterns and Warning Sequences

The system issues alerts based on the following storm movement patterns.
Pattern A: Distant Monitoring.
As clouds enter Zone 1, the meter fluctuates occasionally. No audible alarm is triggered at this stage.
Pattern B: Approaching Storm.
As the storm enters Zone 1, the meter rises based on accumulated electrical detection. Upon entering Zone 2, the system hits the threshold and sounds a 40-second alarm. As the storm nears Ground Zero, the alarm intervals shorten until the siren becomes continuous.
Pattern C: Overhead Development.
For storms forming directly overhead, the meter responds to the initial buildup of electrical charges. As the charge separation intensifies, the system detects the accumulation and triggers an immediate warning.
Installation Example: Municipal Baseball Stadium

Installation Example: Municipal Baseball Stadium

Success Stories and Testimonials

With over 700 installations across Japan, our technology protects golf courses, resorts, telecommunication hubs, broadcasting stations, and industrial plants.

Voices from the Field.
"The clarity of the warning period is a game-changer. Previously, we guessed when it was safe by timing lightning and thunder. Now, the Thunder Meter visualizes the danger level. We can see exactly when the storm has passed, allowing us to resume operations and guide our guests with total confidence." (Golf Course Operator)
"Standard weather reports only give general advisories, making customer guidance difficult. With the Thunder Meter, we can clearly assess the risk and provide accurate warnings. Our customers can enjoy sports safely, giving us peace of mind." (Stadium Manager)
"It is maintenance-free and easy to operate. This unit requires no replacement parts for ten years. That reliability and zero running cost are huge advantages for any facility." (Facility Manager)

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