The precipitation had only started falling about 20 minutes earlier, but it was coming down heavier each moment and the wind was picking up too (check out the sock) so the pilots of AA's Flt. 592 to PHX were really rather focused on getting airborne as quickly as possible. The precip was a blend of freezing rain and snow which was turning the runways, taxiways, and roadways into skating rinks. The tower was calling visibility at 1.5 miles (the tower is just barely visible over the AA A319) and the Ops folks had just closed runway 7-25 in order to concentrate all their efforts on running the sweepers and plows down 16R-34L and 16L-34R between planes in an attempt to get the newly-fallen precip off the runway surfaces before it could freeze into ice. Meanwhile, the pilots wanted to get out so they did not have to return to the ramp to be deiced. The first five morning departures (a United, a Horizon, a Southwest, this and one other AA) made it, but then, with visibility down to minimum, the wind steadily increasing from out of the north and the runways becoming more and more slick, the tower had no choice but to reverse the runway direction, and all the next morning departures began being delayed.