National Weather Service United States Department of Commerce

Heavy Rainfall Continues from the Southwest to the Plains; Severe Thunderstorms in the Southern Plains

Pacific tropical moisture wrapping into a storm will continue a multi-day heavy rainfall event this week that will impact the Southwest into the Plains. Scattered severe thunderstorms capable of mainly severe wind gusts appear possible across portions of the southern Plains this afternoon into tonight. There is also a risk of isolated severe winds gusts and tornadoes in Kansas into Nebraska. Read More >

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Last Map Update: Wed, Sep 30, 2026 at 7:30:12 am MST

As the upper-level trough & low shift eastward, the potential for rain will continue to shift eastward and start to decrease across Arizona. Additional rainfall is expected to be mostly light to at times moderate. The risk of Flash Flooding is marginal and any Flash Flooding will be isolated to any locally heavy showers and thunderstorms that may develop.
Flow in mainstem rivers, such as the Little Colorado River will be elevated. Minor flooding will be possible as mainstem rivers may exceed their banks at times as water continues to drain through the basins. There is an increased risk for embedded thunderstorms today due to the mid/upper-level trough and close low. Some thunderstorms may be strong to severe - heavy rainfall, strong winds, and large hail possible.
Once the upper-level trough and low move east and out of Arizona, dry weather is expected across northern Arizona Thursday and into the weekend.

 

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