The app has updated for the first time since the rain storm started. The first accumulation was reported (not rapid fire) at 11:36 at 0.04 inch. Subsequent regular reports were:br/br/11:42 0.32 inchbr/11:47 0.58 inchbr/br/The app displays 0.49 inch, so apparently, it is not using the regular data feed but the rapid fire data.br/br/The time is 11:46, 10 minutes after the first rainfall was reported. So it appears the polling period for rain must be 10 minutes or more.br/br/The next time the value is updated is 11:55, so best guess is that the rainfall amount is update every 10 minutes on the 5s.