| Event |
Flash Flood |
| -- Flood Cause |
Heavy Rain / Tropical System |
| State |
CALIFORNIA |
| County/Area |
RIVERSIDE |
| WFO |
SGX |
| Report Source |
Utility Company |
| NCEI Data Source |
CSV |
| Begin Date |
2018-09-30 15:00 PST-8 |
| Begin Location |
3NW MECCA |
| End Date |
2018-09-30 21:00 PST-8 |
| End Location |
2ESE MECCA |
| Deaths Direct/Indirect |
0/0 (fatality details below, when available...) |
| Injuries Direct/Indirect |
1/0 |
| Property Damage |
200.00K |
| Crop Damage |
0.00K |
| Episode Narrative |
Moisture from Tropical Storm Rosa advanced into Southern California on September 30th and brought rain and thunderstorms to the region. The areas that experienced significant rainfall on the 30th were the San Bernardino Mountains and the Coachella Valley. One person was reported missing in the Coachella Valley during the same time period where heavy rainfall of 1.5-3.5 inches in 2 hours occurred. |
| Event Narrative |
A thunderstorms produced radar estimated 2 to 4 inches of rain in Box Canyon near I-10 within Box Canyon. The runoff destroyed a dike operated by Coachella Valley Water District. The moisture was associated with pre Tropical Cyclone Rosa. The thunderstorm produced prolific lightning in the area. Box Canyon had a flash flood which drains from the little San Bernardino mountains. The water eventually drains into the Salton Sea. A vehicle travelling on Box Canyon road was swept away in the flash flood and the driver drowned (within PHX area of responsibility). |
