Tucson Warnings, Watches and Advisories

Flood Watch issued September 15 at 10:56PM MST until September 17 at 5:00AM MST by NWS Flagstaff AZ

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of east central, north central, northeast, and west central Arizona, including the following areas, in east central Arizona, Northern Gila County. In north central Arizona, Black Mesa Area, Coconino Plateau, Eastern Mogollon Rim, Grand Canyon Country, Kaibab Plateau, Little Colorado River Valley in Coconino County, Marble and Glen Canyons, Northeast Plateaus and Mesas Hwy 264 Northward, Northeast Plateaus and Mesas South of Hwy 264 and Western Mogollon Rim. In northeast Arizona, Chinle Valley, Chuska Mountains and Defiance Plateau, Little Colorado River Valley in Apache County, Little Colorado River Valley in Navajo County and White Mountains. In west central Arizona, Oak Creek and Sycamore Canyons, Yavapai County Mountains and Yavapai County Valleys and Basins. * WHEN...Through late Wednesday night. * IMPACTS...Flash flooding will be possible in creeks, normally dry washes, swimming holes, and over recently burned areas. * ADDITIONAL DETAILS... - Increasing moisture will combine with a shortwave feature moving north across Arizona to bring multiple rounds of showers and thunderstorms from late Tuesday night through Wednesday night. Thunderstorms will have the potential to produce heavy rainfall that could lead to flash flooding, especially in areas that receive repeated rounds of rainfall. - Additional information is available at weather.gov/flagstaff.

Flood Watch issued September 15 at 6:47PM MST until September 16 at 11:00PM MST by NWS Tucson AZ

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of Southeast Arizona, including the following areas, Baboquivari Mountains, Catalina and Rincon Mountains, Chiricahua Mountains, Dragoon and Mule and Huachuca and Santa Rita Mountains, Eastern Cochise County below 5000 feet, Galiuro and Pinaleno Mountains, South Central Pinal County, Southeast Pinal County, Tohono O'odham Nation, Tucson Metro Area, Upper Gila River Valley, Upper San Pedro River Valley, Upper Santa Cruz River Valley/Altar Valley, Western Pima County and White Mountains of Graham and Greenlee Counties. * WHEN...From 11 PM MST this evening through Wednesday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Well above normal moisture levels for September are expected to result in scattered to numerous showers and thunderstorms capable of producing heavy rainfall from late tonight through late tomorrow night. Rain totals of 1 to 2 inches are expected with the stronger storms with isolated amounts over 2 inches possible. Areas that received substantial rainfall over the previous few days will be more susceptible to flash flooding. This rainfall will result in faster response in washes, creeks, and storm drainages. - http://www.weather.gov/safety/flood

Flood Watch issued September 15 at 10:34AM MST until September 16 at 11:00PM MST by NWS Phoenix AZ

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...A portion of south central Arizona, including the following areas, Aguila Valley, Apache Junction/Gold Canyon, Buckeye/Avondale, Cave Creek/New River, Central Phoenix, Deer Valley, Dripping Springs, East Valley, Fountain Hills/East Mesa, Gila Bend, Globe/Miami, Mazatzal Mountains, New River Mesa, North Phoenix/Glendale, Northwest Pinal County, Northwest Valley, Pinal/Superstition Mountains, Rio Verde/Salt River, San Carlos, Scottsdale/Paradise Valley, Sonoran Desert Natl Monument, South Mountain/Ahwatukee, Southeast Gila County, Southeast Valley/Queen Creek, Superior, Tonopah Desert, Tonto Basin and West Pinal County. * WHEN...From late tonight through Wednesday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - The combination of abundant moisture and a weather system moving into the region will produce several rounds of showers and thunderstorms late tonight through Wednesday. Moderate to heavy rainfall with rainfall rates in excess of 1-2 inches per hour will be likely at times. - http://www.weather.gov/safety/flood

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Tucson.

Use the Radar Maps link provided to understand the trajectory of a storm.