updated at 10:50 a.m.; originally posted at 6:38 a.m.
Flood warnings remain in effect for much of the area until 12:15 p.m. after what was a difficult commute, with multiple reports of flooding and numerous water rescues (get the latest from Dr. Gridlock). From the National Weather Service:
* ONE TO TWO INCHES OF RAIN HAS FALLEN ... ADDITIONAL HEAVY RAINS ARE LIKELY...AS STORMS REPEATEDLY MOVE OVER THE SAME AREAS.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED. STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED. HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY.
Areas under a Flood Warning include D.C., Montgomery and Farifax counties until 10:15 a.m. (extended to 12:15 p.m.); most of Anne Arundel and the northern half of P.G. counties until 11:30 a.m.; and northern Fauquier and most of Loudoun county until 11:45 a.m.
Remember -- it is not safe to drive through flooded roadways: turn around, don't drown.