r/AmbientWeather

I bought a WS-2902D and set it up. It dumped rain yesterday for a good 20-30 mins (like a quick afternoon thunderstorm in Arkansas). Rain gauge was reporting no rain while I was actually watching the down poor. Then it bumped up to 0.05 for only a short time. In the picture you can see the temp drop at the peak at 1:45pm and the valley at 2:30pm. Then where it picks up a small amount of rain fall. How do I check to ensure my rain gauge is accurate?