When the glass is cold the water molecules strike the glass and cool off, becoming liquid. The water comes from the air. Air as it exists under normal conditions in the atmosphere contains some small fraction of water vapor. When the glass is cold the water molecules strike the glass and cool off, becoming liquid. The water comes from the air.
Runway 422 is the only runway open at MSP right now. Itâs a diagonal runway, running SW to NE. Itâs only used 1 percent of the time, according to Hogan, and itâs reserved for severe weather situations. âEventually, by this evening, the wind should change directions enough to allow the airport to open the other runway.â
On October 17, 2013, O'Hare opened Runway 10C-28C. The opening of this eighth runway marked the completion of the Phase II expansion project. O'Hare landings have been reconfigured to predominately use a triple arrival scheme using three of the four parallel runways, with the fourth runway being used for takeoffs. Before the opening of 10C-28C, the new runway, 9L/27R which opened in November 2008, O'Hare had seven runways in three roughly-parallel sets.