I use a weather app named Dark Sky. It is supposed to provide highly localized weather. The past few weeks it has been telling me it is raining outside when there is no rain. (San Antonio, TX). The TV weatherman has been talking about rain that is evaporating before ever hitting the ground. You may be receiving data about rain that is evaporating, and this may be what triggered your rain skip. Mine hasn’t been triggered, but I have it set at 0.75 inch.
Mike