PHOENIX – A late-season surge of monsoonal moisture Friday triggered thunderstorms across the Southwest , which led to flooding across many areas, including Phoenix and outside of Las Vegas.

First responders reported being involved in dozens of water rescues as 1-3 inches of rain fell before the evening commute, causing delays not only on the ground but also in the air around major airports.

At the Phoenix Sky Harbor International Airport, nearly two inches of precipitation fell - surpassing the entire monsoon season's rainfall accumulation.

Officials urged drivers to avoid crossing flooded roadways of unknown depths and said regions along creeks, streams and other low-lying areas were subject to the most significant flash flooding.

Both a Flood Watch and a Flash Flood Warning were in

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