570 

WGUS55 KTWC 311100

FFWTWC

AZC019-311400-

/O.NEW.KTWC.FF.W.0174.260831T1100Z-260831T1400Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/



BULLETIN - EAS ACTIVATION REQUESTED

Flash Flood Warning

National Weather Service Tucson AZ

400 AM MST Mon Aug 31 2026



The National Weather Service in Tucson has issued a



* Flash Flood Warning for...

  Central Pima County in southeastern Arizona...



* Until 700 AM MST.



* At 400 AM MST, Doppler radar and automated rain gauges indicated

  thunderstorms producing heavy rain across the warned area. The

  AZGFD 3 gauge reported 1.22 inches in 30 minutes, the Diamond Bell

  Ranch alert gauge reported 0.98 inches in 30 minutes, and the Altar

  Wash at Hwy 286 gauge reported 0.83 inches in 30 minutes.

  Additional rainfall amounts up to 1 inch are possible in the warned

  area. Flash flooding is ongoing or expected to begin shortly.



  HAZARD...Flash flooding caused by thunderstorms.



  SOURCE...Radar and automated gauges.



  IMPACT...Flash flooding of small creeks and streams, urban areas,

           highways, streets and underpasses as well as other poor

           drainage and low-lying areas.



* Some locations that will experience flash flooding include...

  Three Points, Tucson Estates, Tucson Mountain Park and Ryan

  AirField.



This includes the following highways...

Route 86 between mile markers 146 and 160. Route 286 between mile

markers 25 and 45.



This includes the following streams and drainages...

  Alambre Wash, Cerro Prieto Wash, Saucito Wash, Altar Wash, Brown

  Wash, Brawley Wash, Banner Wash, Fresno Wash, Mendoza Wash, South

  Mendoza Wash and Soto Wash.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Turn around, don't drown when encountering flooded roads. Most flood

deaths occur in vehicles.



&&



LAT...LON 3185 11125 3202 11115 3226 11117 3225 11132

      3220 11138 3181 11144



FLASH FLOOD...RADAR AND GAUGE INDICATED



$$



AWH






463 

FZUS73 KMQT 311105

MWSMQT



Marine Weather Statement

National Weather Service Marquette MI

705 AM EDT Mon Aug 31 2026



LSZ263-311145-

705 AM EDT Mon Aug 31 2026



A Marine Weather Statement has been issued for the following areas...

  Lake Superior from Saxon Harbor WI to Upper Entrance to Portage 

  Canal MI 5NM off shore to the US/Canadian border including Isle 

  Royale National Park...



At 705 AM EDT, Doppler radar indicated a strong thunderstorm, capable

of producing winds to around 30 knots and small hail. This

thunderstorm was located 19 nm northeast of The Western Lake Superior

Buoy, moving east at 20 knots.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Mariners can expect gusty winds to around 30 knots, locally higher

waves, and lightning strikes. Boaters should seek safe harbor

immediately until this storm passes.



&&



LAT...LON 4751 8960 4765 8958 4769 8915 4747 8917



$$



NJL






171 

WGUS75 KTWC 311143

FFSTWC



Flash Flood Statement

National Weather Service Tucson AZ

443 AM MST Mon Aug 31 2026



AZC019-311400-

/O.CON.KTWC.FF.W.0174.000000T0000Z-260831T1400Z/

/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

Pima AZ-

443 AM MST Mon Aug 31 2026



...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 7 AM MST THIS MORNING

FOR CENTRAL PIMA COUNTY...



At 443 AM MST, Doppler radar and automated rain gauges indicated

thunderstorms producing heavy rain across the warned area. Between 1

and 2 inches of rain have fallen. The AZGFD3 and Diamond Bell Ranch

alert gauges have recorded 1.5 inches in the last hour and a half.

Flash flooding is ongoing or expected to begin shortly.



HAZARD...Flash flooding caused by thunderstorms.



SOURCE...Radar and automated gauges.



IMPACT...Flash flooding of small creeks and streams, urban areas,

         highways, streets and underpasses as well as other poor

         drainage and low-lying areas.



Some locations that will experience flash flooding include...

  Three Points, Tucson Estates, Tucson Mountain Park and Ryan

  AirField.



This includes the following highways...

Route 86 between mile markers 146 and 160. Route 286 between mile

markers 25 and 45.



This includes the following streams and drainages...

  Alambre Wash, Cerro Prieto Wash, Saucito Wash, Altar Wash, Brown

  Wash, Brawley Wash, Banner Wash, Fresno Wash, Mendoza Wash, South

  Mendoza Wash and Soto Wash.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Turn around, don't drown when encountering flooded roads. Most flood

deaths occur in vehicles.



&&



LAT...LON 3185 11125 3202 11115 3226 11117 3225 11132

      3220 11138 3181 11144



FLASH FLOOD...RADAR AND GAUGE INDICATED



$$



AWH