What does a smaller distance between isobar graduations indicate regarding wind speed?

A smaller distance between isobar graduations on a weather map indicates a stronger wind speed. This is because isobars represent areas of equal atmospheric pressure, and when these lines are closely spaced, it signifies a steep pressure gradient. A steep pressure gradient leads to a more significant difference in atmospheric pressure over a shorter distance, which results in stronger winds.

In contrast, wider spacing between isobars indicates a more gradual change in pressure, which typically results in lighter winds. Therefore, understanding the relationship between isobar spacing and wind speed is crucial for interpreting weather conditions effectively.