UPDATE (7:43 p.m.): Back to a severe thunderstorm watch until 9 p.m.
(4:37 p.m.): Severe thunderstorm watch upgraded to a warning.
Fairfax City and the surrounding jurisdictions are under a heat advisory and severe thunderstorm watch until Wednesday night
National Weather Service says severe storms could cause damaging winds, large hail and heavy rainfall. What's more, heat indices are expected to top 105 degrees during the afternoon.
The heat advisory and storm watch are in effect until 9 p.m.
The city is using until 8 p.m. Drop by for air conditioning and free wireless Internet.
to see photos from past storms.