US: Authorities issue flash flood warning for parts of Oklahoma City, Okla., until at least 08:00 July 9

Event

The US National Weather Service (NWS) has issued a flash flood warning for parts of Cleveland and McClain counties, Oklahoma, until 08:00 July 9. The impacted counties cover southern parts of Oklahoma City. The warning states that 8-10 cm (3-4 inches) of rain have already fallen, with flooding already occurring in Norman; further rain is forecast in the coming hours.

Flash flooding of small creeks and streams, urban areas, highways, streets, underpasses, and other poor drainage and low-lying areas is likely in the impact area. Lingering disruptions to traffic and business are likely over the coming hours in affected areas, including on major roads.

Additionally, as a result of the inclement weather, at least 50,000 people remain without power. The majority of outages are occurring in Beckham, Washita, Custer, Cleveland, and Caddo counties, to the west of Oklahoma City.

Transport and business disruptions are likely in affected areas; businesses without backup generators could temporarily suspend operations. Mobile voice and internet service disruptions are possible. The electricity disruptions could also affect ATMs and fueling stations. The blackout could adversely affect security protocols, including alarm systems and electronic fences; opportunistic criminal activity could increase during the power outage.

Advice

Monitor local media for updates and advisories on weather conditions. Confirm all transport reservations prior to travel. Make allowances for possible supply chain disruptions in affected areas. Do not drive on flooded roads.

Charge mobile and essential electrical devices when possible and ensure backup batteries are available. Exercise caution when driving in areas impacted by the power outage. Park vehicles in secure areas. Confirm business appointments. Verify that security systems are working. Ensure that generators are functional and refuel devices when necessary.