Arizona, 2014Flash Flood and Flood in Arizona, October 8 to 9, 2014
October 8 to 9, 2014 · NWS TWC · 2 events in 1 county or zone
Simon, once rated a Category 4 hurricane with maximum sustained winds of 135 mph, was the fourth tropical system of 2014 to bring rainfall to southeastern Arizona. An upper level disturbance located over the southwestern United States helped to advect copious amounts of moisture into the area ahead of Simon, which eventually produced heavy rainfall and flooding on October 8 and 9.
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 0
- Property damage
- $27,000
- Crop damage
- None recorded
- Events
- 2
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
Simon, once rated a Category 4 hurricane with maximum sustained winds of 135 mph, was the fourth tropical system of 2014 to bring rainfall to southeastern Arizona. An upper level disturbance located over the southwestern United States helped to advect copious amounts of moisture into the area ahead of Simon, which eventually produced heavy rainfall and flooding on October 8 and 9. Numerous roads on the Tohono O'Odham Nation were closed for more than 24 hours due to flooding.
Flood, Pima
- When
- October 8, 8:30 AM MST to October 9, 6:00 PM MST
- Where
- Pima County, 3.87 mi SSW of Hickiwan to 12.36 mi SSE of Ali Chuk
- Cause
- Heavy Rain / Tropical System
- Property damage
- $25,000
- Reported by
- Law Enforcement
- Coordinates
- 32.300, -112.510
Heavy rain in excess of 2 on the Tohono O'Odham Nation caused several road closures for an extended period of time. Highway 86 became impassable in several locations between mile markers 76 and 106. One motorist was rescued from flood waters near mile post 79 after attempting to cross them with their vehicle. High flows on the Hickiwan Wash near its confluence with the San Simon Wash near Highway 86 were exacerbated by the compromise of several earthen berms designed to protect the highway. High flows along the San Simon Wash continued downstream from there to the confluence with the Vamori Wash near Santa Cruz, where Indian Route 21 was impassable, then south to the International Border. High flows occurred on the Santa Rosa Wash from Highway 86 downstream into Pinal County causing the closure of Indian Route 15 at North Komelik. Water levels finally receded during the evening hours of October 9th.
Flash Flood, Pima
- When
- October 8, 1:15 PM MST to 2:15 PM MST
- Where
- Pima County, 2.23 mi E of Tucson to 1.83 mi W of Sabino
- Cause
- Heavy Rain / Tropical System
- Property damage
- $2,000
- Reported by
- Social Media
- Coordinates
- 32.236, -110.892
Heavy rainfall of over 1 inch in less than 45 minutes caused flooding of roadways and washes in the Tucson metro area. One car got stuck in the flood waters of Arcadia Wash south of Speedway on Tucson's east side, while Tanque Verde north of Catalina Highway had to be closed for a time due to flash flooding. Many city streets were covered with several inches of water.
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Damaging Winds and Lightning Strike in Massachusetts, October 8, 2014$575,000 · 87 kt wind · 9 events
- Hail and Lightning Strike in Arkansas, October 8, 2014$30,000 · 1.5 in hail · 4 events
- Damaging Winds in Tennessee, October 8, 2014$16,000 · 50 kt wind · 2 events
- Marine Thunderstorm Winds in North Atlantic Coastal Waters, October 8, 20145 events
- Damaging Winds in New Hampshire, October 8, 201467 kt wind · 5 events
- Hail in Alabama, October 8, 20142.75 in hail · 5 events
- Damaging Wind in Connecticut, October 8, 2014$10,000 · 50 kt wind · 1 event
- Hail in Oklahoma, October 8, 20141 in hail · 1 event
- Damaging Wind in Arkansas, October 8, 2014$10,000 · 52 kt wind · 1 event
- Hail in Tennessee, October 8, 20140.88 in hail · 1 event
- Heavy Rain in Arizona, October 8, 20141 event
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 544803, 544776.