Southerly flow spread copious amounts of tropical moisture northward and into the south central Arizona deserts during the morning hours on September 9th. Widespread showers with moderate to heavy rain developed across the greater Phoenix metropolitan area and this led to episodes of flash flooding and urban flooding which started in the late morning hours. In addition to the showers, there were embedded thunderstorms which served to locally enhance rainfall totals. Local storm spotters along with Flood Control District gage reports indicated that between 2 and 3 inches of rain fell during the day. Numerous reports of flash flooding and urban flooding were received from across the greater Phoenix area, starting in the late morning and continuing into the afternoon hours.

Flash Flood in MARICOPA, ARIZONA
From 09-SEP-13 10:30:00 to 09-SEP-13 13:00:00 (MST-7)
Location: PHOENIX DEER VLY ARP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Southerly flow imported copious amounts of tropical moisture into south central Arizona during the morning hours on September 9th, and as a result widespread showers developed across the greater Phoenix metropolitan area. Areas of moderate to heavy rain developed, isolated embedded thunderstorms further enhanced the rainfall totals. Flood Control District gages and radar data indicated that rainfall rates between one and two inches per hour had occurred during the late morning and this led to flash flooding. According to a public reports, at 1145MST there was water flowing across the road at Cave Creek Road and Rose Garden Lane, about 3 miles east of the Deer Valley airport. A Flash Flood Warning was issued for the area beginning at 1133MST and continuing through 1300MST.

Flash Flood in MARICOPA, ARIZONA
From 09-SEP-13 10:30:00 to 09-SEP-13 13:00:00 (MST-7)
Location: TEMPE
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Department of Highways

Southerly flow imported copious amounts of tropical moisture into south central Arizona during the morning hours on September 9th, and as a result widespread showers developed across the eastern portions of the greater Phoenix metropolitan area. Areas of moderate to heavy rain developed; isolated embedded thunderstorms further enhanced the rainfall totals. Flood Control District gages and radar data indicated that rainfall rates up to 2 inches per hour had occurred during the late morning and this led to flash flooding across portions of Mesa and Chandler. According to the Arizona Department of Highways, at about 1200MST there was flash flooding near the interchange of the Superstition Freeway, or US 60, and the Loop 101. This intersection was about 2 miles southwest of the Fiesta Mall. A Flash Flood Warning was in effect for the area at the time and it ran through 1300MST. Although the heavy rains had tapered by early afternoon, additional rains occurred into the afternoon hours and another Urban and Small Stream Flood Advisory was issued which ran from 1300MST to 1500MST.

Flash Flood in MARICOPA, ARIZONA
From 09-SEP-13 10:30:00 to 09-SEP-13 13:00:00 (MST-7)
Location: WEST CHANDLER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Southerly flow imported copious amounts of tropical moisture into south central Arizona during the morning hours on September 9th, and as a result widespread showers developed across the greater Phoenix metropolitan area. Areas of moderate to heavy rain developed; isolated embedded thunderstorms further enhanced the rainfall totals. Flood Control District gages and radar data indicated that rainfall rates up to two inches per hour had occurred during the late morning and this led to flash flooding in the community of Ahwatukee. At about 1200MST, a local broadcast media report indicated that water was flowing over the road near the intersection of 48th Street and Warner Road in Ahwatukee. As a result, the road was closed. A Flash Flood Warning was issued for the central portions of the greater Phoenix area at 1133MST and it continued through 1300MST. Although the heavy rains did let up, additional rainfall occurred into the afternoon hours and led to the issuance of an Urban and Small Stream Flood Advisory at 1300MST; the advisory continued until 1500MST.

Flash Flood in MARICOPA, ARIZONA
From 09-SEP-13 10:30:00 to 09-SEP-13 13:00:00 (MST-7)
Location: PHOENIX TURF ARPT
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Department of Highways

Southerly flow imported copious amounts of tropical moisture into south central Arizona during the morning hours on September 9th, and as a result widespread showers developed across the central portions of the greater Phoenix metropolitan area. Areas of moderate to heavy rain developed, isolated embedded thunderstorms further enhanced the rainfall totals. Flood Control District gages and radar data indicated that rainfall rates up to 2 inches per hour had occurred during the late morning and this led to flash flooding between North Mountain Village and Deer Valley Village. According to the Arizona Department of Highways, at about 1200MST there was flooding near the intersection of Interstate 17 and Greenway Roads, about 3 miles north of Metro Center. A Flash Flood Warning was issued for the area at 1133MST and it continued until 1300MST. Although the heavy rains did taper off by early afternoon, additional rain occurred into the afternoon hours, necessitating the issuance of another Urban and Small Stream Advisory at 1300MST. This new advisory continued through 1500MST. As an example of the amount of rain that fell with this flash flooding event, a trained weather spotter in the area measured a storm total of 2.42 inches of rain ending at 1615MST. His location was approximately 4 miles north of North Mountain Park.

Flash Flood in PINAL, ARIZONA
From 09-SEP-13 10:30:00 to 09-SEP-13 13:00:00 (MST-7)
Location: GOLDFIELD
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Southerly flow imported copious amounts of tropical moisture into south central Arizona during the morning hours on September 9th, and as a result widespread showers developed across the eastern portions of the greater Phoenix metropolitan area. Areas of moderate to heavy rain developed; isolated embedded thunderstorms further enhanced the rainfall totals. Flood Control District gages and radar data indicated that rainfall rates of up to 2 inches per hour had occurred during the late morning and this led to flash flooding in Apache Junction and Gold Canyon. According to a broadcast media report, at about 1215MST washes were running heavily in the Superstition Foothills area and water was flowing across roads and driveways. A Flash Flood Warning had been issued at 1109MST; it expired at 1230MST. Rainfall then tapered off but remained sufficiently heavy to warrant the issuance of another Urban and Small Stream Advisory at 1300MST. The advisory was converted to an Areal Flood Warning at 1430MST which ran until 1730MST. Fortunately no injuries were reported as a result of the flash flooding.

Flash Flood in MARICOPA, ARIZONA
From 09-SEP-13 10:30:00 to 09-SEP-13 13:00:00 (MST-7)
Location: CHANDLER HGTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Southerly flow imported copious amounts of tropical moisture into south central Arizona during the morning hours on September 9th, and as a result widespread showers developed across the southeastern portion of the greater Phoenix metropolitan area. Areas of moderate to heavy rain developed, isolated embedded thunderstorms further enhanced the rainfall totals. Flood Control District gages and radar data indicated that rainfall rates up to two inches per hour had occurred during the late morning and this led to flash flooding between Sun Lakes and San Tan Valley. According to broadcast media reports, at approximately 1200MST there was flooding near the intersection of Riggs and Power Roads. A Flash Flood Warning was issued for the area at 1109MST and it remained in effect through 1230MST. Additional rains continued in the area into the afternoon hours, leading to the issuance of an Urban and Small Stream Flood Advisory.