Isotachs

Isotachs are lines on a given surface connecting points with equal wind speed. The isotachs, or wind speeds, are measured in knots. They are found by looking at the yellow numbers that coincide with the dashed yellow lines (the numbers and lines are red on the white background maps). Isotachs- These are lines of equal wind speed. They are most often contoured in the upper levels of the atmosphere, especially at the jet stream level. They are important for locating the jet stream and jet streaks within a jet stream.
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