 So right now we are under a severe thunderstorm watch until just after 10 o'clock tonight. D.C. has activated its heat emergency plan again today, and that means cooling centers and spray parks are open across the city. There are also cooling centers in Fairfax, Loudoun, and Prince George's counties. Arlington County has its spray parks open today, too. Other cities and counties recommend heading over to your local public library if you need some A.C.,