Yeah that's rare but doable. You're basically doing 0.15"-0.20"/min. I've done that in a min before on the Davis, but can't imagine it for a half hour. But even as insane as that is, the 1.23" in 1 minute is like 6x heavier. I just can't believe it's possible. That record was from July 4, 1956 and I guess the equipment calibrated out correctly. I figured everything was manual gauges back then though? If it was manual, who in their right mind is going out there to check the rain during the heaviest rainfall in world history?