The left column of Low-Level Prognostic Charts is forecasted for how many hours?

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Multiple Choice

The left column of Low-Level Prognostic Charts is forecasted for how many hours?

Forecast information on Low-Level Prognostic Charts is laid out in time steps across columns. The leftmost column represents the 12-hour forecast from the chart’s valid time, providing the near-term picture of low‑level weather features. The middle column shows the 24-hour forecast and the right column shows the 36-hour forecast, so the earliest forecast window is the 12-hour one. That’s why the left column is 12 hours.

Forecast information on Low-Level Prognostic Charts is laid out in time steps across columns. The leftmost column represents the 12-hour forecast from the chart’s valid time, providing the near-term picture of low‑level weather features. The middle column shows the 24-hour forecast and the right column shows the 36-hour forecast, so the earliest forecast window is the 12-hour one. That’s why the left column is 12 hours.

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