MD-82
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Flight Crew Diverted; Flight Crew Landed As Precaution; Flight Crew Overcame Equipment Problem; General Declared Emergency; General Maintenance Action
Aircraft
Cruising at FL330 we received a cabin altitude oral and light warning.  We checked our cabin altitude indicator and verified our cabin altitude was over 10;000 feet and still climbing at 700-900 feet per minute.  We put on our O2 masks; executed the QRH procedures; and declared an emergency with ATC.  In our descent we were able to gain manual control of the cabin.  We then contacted Dispatch and he concurred that we divert instead of proceeding on to destination.
MD82 First Officer receives a cabin altitude warning at FL330 and after verifying cabin altitude above 10;000 feet and climbing an emergency descent is initiated.  During descent manual control of the cabin is gained; but the crew elects to divert to a suitable airport.