Update: 5:20 pm: Churchill Downs has moved the Oaks post time at 6:20 pm.The National Weather Service has issued a severe thunderstorm watchfor Louisville and the surrounding area until 10 pm. The NWS says to expect wind gusts up to 60 mph and excessive cloud-to-ground lightning between 5 and 6 pm.The weather caused the LMPD to evacuate the infield briefly around 4:30 pm, however crowds returned after police gave the all clear.