Scattered monsoon thunderstorms developed during the afternoon and evening hours across portions of Imperial County on August 3rd and is typical with monsoon storms, they produced gusty and damaging outflow winds along with locally heavy rainfall. For example, during the late afternoon, thunderstorms moved across the western portion of the Imperial Valley, near the town of Seeley, and they generated gusty winds over 60 mph that downed as many as 40 power poles along Drew Road. The poles were downed to the south of Interstate 8. Later, during the evening hours, thunderstorms with intense rainfall led to flash flooding along highway 78, about 15 miles northeast of Glamis and across the far eastern portion of Imperial County. The flooding caused significant debris to wash across the highway presenting a serious hazard to motorists.

Thunderstorm Wind in IMPERIAL, CALIFORNIA
From 03-AUG-17 15:00:00 to 03-AUG-17 15:00:00 (PST-8)
Location: SEELEY
Magnitude: 52.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Scattered thunderstorms developed across the western portion of the Imperial Valley during the afternoon hours on August 3rd and some of the stronger storms produced gusty and damaging outflow winds. According to a local emergency manager, at 1500PST gusty winds estimated to be as high as 60 mph downed about 40 power poles in the vicinity of the intersection of Drew and Diehl Roads. The power poles were downed about 3 miles southwest of Seeley and south of Interstate 8 and they covered about one and one half mile of roadway.

Thunderstorm Wind in IMPERIAL, CALIFORNIA
From 03-AUG-17 14:32:00 to 03-AUG-17 14:32:00 (PST-8)
Location: SEELEY
Magnitude: 52.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Scattered thunderstorms developed during the afternoon hours across the western portions of the Imperial Valley and some of the stronger storms produced gusty and damaging outflow winds near the town of Seeley. According to the California Highway Patrol, at 1432PST gusty winds estimated to be at least 60 mph in strength blew down a number of power poles into the road near the intersection of Kramar and Drew Roads, to the south of Seeley and just south of Interstate 8. In addition, power lines were reported to be downed and lying in the road along with the power poles. No injuries were reported as a result of the downed power poles.

Flash Flood in IMPERIAL, CALIFORNIA
From 03-AUG-17 17:30:00 to 03-AUG-17 19:00:00 (PST-8)
Location: PICACHO
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Scattered thunderstorms developed across the far eastern portion of Imperial County during the late afternoon hours and some of the stronger storms produced locally heavy rains with peak rain rates in excess of one inch per hour. The intense rains led to an episode of flash flooding along highway 78, to the northeast of the town of Glamis. According to the California Highway Patrol and the El Centro Comms Center, heavy rains 15 miles northeast of Glamis caused significant mud, rocks and debris to wash across the highway and this occurred around 1833PST. A Flash Flood Warning was in effect at the time of the flooding; fortunately no accidents or injuries were reported due to the dangerous debris in the road.