2. The WX-500 Stormscope detects electrical discharges from thunderstorms within a 200 NM radius of the aircraft. Output is displayed on the Garmin GNS 430 MFD. GNS 430 provides complete control of WX-500 operating modes. Antenna detects intra-cloud, inter-cloud and cloud-to-ground discharges. Detects thunderstorms in all phases of development. Strike rate helps determine if storms are developing or dissipating. Works anywhere – on the ground or in the air. Check it before takeoff. WX-500 OVERVIEW

3. ANATOMY OF A THUNDERSTORM A thunderstorm can build, mature and dissipate in as little as 20 min. Only a small percentage of lightning strikes occur between clouds and ground. Most are intra or inter-cloud. The WX-500 detects storms in all stages of development, and unlike weather radar can see the “storm behind the storm”. There is a strong correlation between electrical discharge and convective wind shear.

4. WX-500 OPERATING MODES CELL MODESTRIKE MODE RADIAL SPREAD

5. GNS-430 WEATHER PAGE In the NAV page group, press MENU to change options: Clear Storm Data Strike Mode – Cell or Strike View Mode – 120° or 360° Self Test

6. GNS-430 MAP PAGE From the MAP page, press MENU to change options: Clear Storm Data (can also be accomplished by pressing the CLR WX button on the panel) Set Range – from the Setup Map menu

7. Lightning Symbol – latest strikes, less than one minute Large + sign = more than one minute old Small + sign = more than two minutes old Strike data is no longer displayed after three minutes STRIKE DATA DISPLAY

8. THINGS TO REMEMBER! Never use the Stormscope to attempt to penetrate a thunderstorm. Avoid thunderstorms by at least 20 NM. Clusters of two or more discharge points indicate a thunderstorm. Avoid the clusters and you will avoid the thunderstorms. In the CELL display even a single discharge point may represent a thunderstorm and should be avoided.