Severe · Flood WatchThis alert has expired. It is kept for reference.

Flood Watch issued August 30 at 11:42AM MST until August 31 at

Affecting Tohono O'odham Nation including Sells

In effect until: Aug 31, 2026, 12:00 PM

Tohono O'odham Nation including Sells

Possible impact zone; conditions develop through 12:00 PM.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

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* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.

* WHERE...Tohono O'odham Nation.

* WHEN...Through Monday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Low-water crossings may be flooded. Flooding may occur in poor
drainage and urban areas.

* ADDITIONAL DETAILS...
- Scattered thunderstorms will be developing again this afternoon
into this evening. Rainfall rates in excess of 1 inch per hour
are expected with the stronger storms with isolated areas having
the potential of 1-3 inches. Additional rainfall from the
previous day activity will result in faster responses in normally
dry washes, creeks and roadway dips. The watch was extended into
Monday evening as scattered thunderstorms will also have the
potential for 1-3 inches Monday afternoon and evening.

- Http://www.weather.gov/safety/flood

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flood Watch issued August 30 at 11:42AM MST until August 31 at

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