Wind Speed

Wind speed is given here in the units of "knots" (knt).  A Knot is a nautical mile per hour.

Using the table below, each short barb represents 5 knots, while each long barb represents 10 knots.  A single long barb and a short barb is 15 knots, simply by adding the value of each barb together (10 knots + 5 knots = 15 knots).

Pennants are 50 knots. Therefore, the last wind barb in the chart below has a wind speed of 65 knots. (50 knots + 10 knots + 5 knots).  If only a station circle is plotted, the winds are calm.