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
The airport is owned by the Allegheny County Airport Authority and is the primary FAA designated reliever airport for Pittsburgh International Airport. Allegheny County Airport was dedicated on September 11, 1931. When it was completed, it was third largest airport in the country, as well as the only hard-surface airport in the country.