Flood watches cover the Southwest ahead of a Four Corners heavy-rainfall event, U.S. Flood Watches are in effect across parts of Arizona, New Mexico, Utah and Colorado as successive Pacific moisture surges raise the flash-flood threat through early November 2, 2026. The Weather Prediction Center (WPC) has placed the Four Corners under a Moderate Risk of excessive rainfall for November 1, when it expects a high-impact heavy rainfall event over saturated ground. #weather #Southwest #FourCorners #flood #US https://watchers.news/2026/10/30/flood-watches-cover-the-southwest-ahead-of-a-four-corners-heavy-rainfall-event-u-s/