On a sweltering and humid Monday to kick off the 2016 Democratic National Convention in Philadelphia, the clouds finally gathered late in the afternoon and burst with torrential rains.
The National Weather Service has issued a Flash Flood Warning for southeastern Pennsylvania, including Philadelphia, that will remain in effect until 11:15 p.m.
At the Wells Fargo Center, members of the media were told to leave their tents as a precaution due to lightning. Several reporters tweeted scenes from inside the tents.
Outside Philadelphia, areas such as Lansdale and Conshocken were pelted with rock-sized hail.
Showers and thunderstorms will likely remain in the area before 10 p.m. and could potentially bring damaging winds.
PECO reported that thousands of customers have been affected by outages throughout the Philadelphia area. Current information can be found at PECO's outage map.
Here's the forecast for the rest of the week:
Tuesday: Sunny, with a high near 95. Northwest wind 6 to 10 mph. At night, mostly clear, with a low around 73. Northwest wind around 5 mph becoming calm in the evening.
Wednesday: Mostly sunny, with a high near 93. Northeast wind around 5 mph becoming light and variable in the afternoon. At night, partly cloudy, with a low around 73. Light southwest wind.
Thursday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 94. Chance of precipitation is 20 percent At night, a chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 30 percent.
Friday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 88. Chance of precipitation is 50%. At night, a chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40 percent.
Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 40%. At night, a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 30 percent.