name: april-2011-damage-surveys
sources:
  - name: tracks
    dataset: noaa:nws-damage-surveys
    # Tracks select on their start time in UTC; the outbreak's last tornadoes began
    # after midnight UTC on 28 April.
    start: 2011-04-27T00:00Z
    end: 2011-04-28T12:00Z
    # as_of reads the live-edited service as it stood then, so the pin cannot drift.
    params: {layer: lines, as_of: "2026-09-29T00:00Z"}
  - name: points
    dataset: noaa:nws-damage-surveys
    # Many 2011 points carry only their date, stamped 00:00 UTC, so the window
    # starts there too.
    start: 2011-04-27T00:00Z
    end: 2011-04-28T12:00Z
    params: {layer: points, as_of: "2026-09-29T00:00Z"}