Key facts
- Alert
- Flash Flood Warning (severe)
- Issued by
- National Weather Service, Tucson AZ
- Areas
- Cochise, AZ; Graham, AZ; Greenlee, AZ
- Places
- San Simon
- In effect
- until 8:00 PM MST, Oct 29, 2026
- Detection
- Radar indicated
What the National Weather Service says
“Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.”
NWS Tucson AZ, Flash Flood Warning, 6:06 PM MST Oct 29, 2026 · official alert
“Flash flooding is ongoing or expected to begin shortly.”
NWS Tucson AZ, Flash Flood Warning, 6:06 PM MST Oct 29, 2026 · official alert
“This includes Interstate 10 between mile markers 374 and 390.”
NWS Tucson AZ, Flash Flood Warning, 6:06 PM MST Oct 29, 2026 · official alert
What to do
Do not drive into flooded roads. Turn around and find another route. The National Weather Service says most flood deaths occur in vehicles, and just 6 inches of moving water can knock you down.
If you are near San Simon or on Interstate 10 between mile markers 374 and 390, watch for water on the road and be ready to change your route. Never drive around barricades.
Move to higher ground if water is rising near you. Stay away from streams, creeks and washes, which can flood quickly in heavy rain. Campers and hikers should avoid streams and creeks.
Check for updates from the National Weather Service. The warning runs until 8:00 PM MST.
Context
FEMA flood-insurance claims show past flooding in these counties. The counts cover only insured homes and businesses, so they do not show all flood damage. Cochise County has 116 claims, Graham County 43 and Greenlee County 145, going back to 1978.
FEMA has declared past disasters here. Graham and Greenlee counties were both covered by a 2006 declaration for severe storms and flooding. Greenlee County was also covered by a 2010 declaration for severe winter storms and flooding.
Updates
- The National Weather Service updated the flash flood warning; it remains in effect until 8:00 PM MST.
- The National Weather Service updated the flash flood warning; it remains in effect until 8:00 PM MST.
- NWS Tucson AZ issued the flash flood warning until 8:00 PM MST.
History here
Cochise County: 116 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.
Graham County: 43 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2026.
Graham County: recent federal disaster declarations
- DR-1660 (2006): severe storms and flooding
Greenlee County: 145 flood insurance claims in FEMA's National Flood Insurance Program records since 1978, most recent 2022.
Greenlee County: recent federal disaster declarations
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Questions
- Is there a flash flood warning in Cochise County, Arizona?
- Yes. The National Weather Service in Tucson issued a Flash Flood Warning for northeastern Cochise County, plus parts of Graham and Greenlee counties, until 8:00 PM MST on October 29, 2026.
- How much rain has fallen near San Simon?
- Radar indicated that between 1 and 1.8 inches of rain had fallen as of 5:02 PM MST. Up to 1 more inch is possible in the warned area.
- Is Interstate 10 affected by the flash flood warning?
- The warning says it includes Interstate 10 between mile markers 374 and 390. Flooding of highways, streets and underpasses is among the expected impacts.
Sources
- NWS Tucson AZ: Flash Flood Warning, Oct 29, 2026 weather.gov
- FEMA OpenFEMA: NFIP claims and disaster declarations fema.gov
How this page is made. The Herebeat Hazard Desk builds event pages from official U.S. government data (National Weather Service, USGS, FEMA). The text is written with AI from that data; every number and quote is checked against the official source automatically before publishing, and the page is updated when the agency updates the event. The official source is always the reference. Spotted a mistake? info@herebeat.app. About the Hazard Desk.