Headline:
Flood Watch issued July 27 at 8:39PM MST until July 28 at 5:00AM MST by NWS Tucson AZ
Event:
Flood Watch
Urgency:
Future
Effective:
July 27, 2026 - 8:39pm
Expires:
July 28, 2026 - 5:00am
Description:
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...A portion of Southeast Arizona, including the following
areas, Baboquivari Mountains, Dragoon and Mule and Huachuca and
Santa Rita Mountains, Upper San Pedro River Valley and Upper Santa
Cruz River Valley/Altar Valley.
* WHEN...Until 5 AM MST Tuesday.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- An organized cluster of storms or mesoscale convective system
(MCS) in northeast Sonora Mexico is expected to slowly drift
northwest across portions of south-central Arizona late this
evening and overnight tonight. This storm system will be capable
of producing moderate rainfall with pockets of very heavy
rainfall. Although widespread rainfall amounts between 0.50 and
1.00 inches are anticipated, localized rainfall amounts between 1
and 3 inches will be possible resulting in localized flash
flooding. The heaviest rainfall is expected over the southwest
half of Santa Cruz county and extreme south-central Pima county
and may have significant impact on the Nogales Wash overnight.
Heavy rainfall Monday evening along Highway 286 and along and
Arivaca Road have made portions of south central Pima county
vulnerable to flash flooding with additional rainfall overnight.
- http://www.weather.gov/safety/flood
Instruction:
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Area Description:
Upper Santa Cruz River and Altar Valleys including Nogales; Upper San Pedro River Valley including Sierra Vista/Benson; Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon; Baboquivari Mountains including Kitt Peak
Forcast Office:
NWS Tucson AZ
Sender: