Update — October 30, 2026, 10:13 p.m. MST (October 31, 12:13 a.m. CDT): The National Weather Service issued a new flood warning for Indian Bend Wash, including Paradise Valley and downtown Scottsdale, after streamflow gauges showed elevated flows.

The agency said flooding was already occurring in the warned area after one to three inches of rain over six hours. It expected flooding impacts to continue despite no additional rainfall being forecast in that bulletin.

The warning is scheduled to expire at 1:15 a.m. MST October 31, equivalent to 3:15 a.m. CDT. The Weather Service said low-water crossings were inundated and might be impassable, and that stormwater would take several hours to move through local drainage systems.

The agency urged motorists to avoid flooded roads and exercise particular caution at night. This notice applies to the specified warned area; it does not establish countywide flooding.

Earlier Reporting — October 30, Afternoon Flash-Flood Warnings

The earlier warnings below have passed their stated expiration times. They are retained as context for the same evening's storm and flooding.

The National Weather Service in Phoenix issued flash-flood warnings October 30 for parts of Maricopa County, Arizona, citing thunderstorms that had produced roughly half an inch to 1.25 inches of rain.

A warning issued at 5:49 p.m. Mountain Standard Time covers locations including Scottsdale, Cave Creek, Carefree, Desert Mountain and Scottsdale Airport. It is scheduled to remain in effect until 8:45 p.m. MST Friday, equivalent to 10:45 p.m. Central Daylight Time.

The agency said Doppler radar indicated heavy rain and that up to another half-inch was possible within the warned area. Its bulletin described flash flooding as ongoing or expected shortly.

A separate warning issued at 5:24 p.m. MST covers New River, Cave Creek and Anthem through 8:30 p.m. MST, or 10:30 p.m. CDT. That warning cites both radar and automated rain gauges.

The earlier bulletin identifies Interstate 17 between mile markers 217 and 226, Arizona Route 74 between mile markers 23 and 30, and Arizona Route 303 between mile markers 127 and 136 among the affected routes.

The two notices concern specific warned areas within the county. Their issuance does not establish that every neighborhood or road in Maricopa County is flooded.

Both bulletins identify potentially life-threatening flash flooding affecting creeks, streams, urban areas, highways, streets and underpasses. The Weather Service advises people to avoid driving onto flooded roads.

The stated ending times are scheduled warning expirations, rather than confirmation that standing water or hazardous conditions will disappear at those moments. The source records retain each notice's separate issue time, locations and validity period.

Sources NWS Phoenix — October 30, 10:13 p.m. MST Indian Bend Wash Flood Warning: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.cb2e79ec3f66a31622cbf2d2a3bc16059bc9518c.001.1 NWS Phoenix — 5:49 p.m. MST October 30 warning: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.abbcc1b903755daad92f1890e487a7f631f50c60.001.1 NWS Phoenix — 5:24 p.m. MST October 30 warning: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a0c237519991ab936e9f964131eb9c58728a03db.001.1