The on-call team, already there

Noah runs night operations at a large hospital in Seattle. Every night, twelve surgeons and nurses are on call. On icy nights, the calls come in and the people do not. A surgeon who lives forty minutes away needs ninety on frozen roads. Last winter, an emergency operation waited an hour and ten minutes for its team. With xMap Flows, Noah built Nightwatch. Every afternoon at three, Nightwatch takes tonight's on-call list, checks the night's forecast at each person's home, works out how far they live and the risk of ice, and if they live far on an icy night, offers them a room by the hospital, while the others get a drive-safe note. This January, Nightwatch saw ice coming on nine nights. Thirty-one people slept a few minutes from the theatre instead of an hour away. On the worst nights the team now arrives in eighteen minutes, and no operation waited for them. On icy nights, Noah's team no longer races the roads. They are already there.

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