As we get into the cooler months of fall and winter, we start to see more NE events unfold along the SE Region as colder High pressures to the north wedge down behind cold fronts that push through. For NE winds, as a cardinal direction we use in forecasting, we see variances in NNE <–> ENE which have a significant impact on SE’erly facing beaches along the South Carolina Coast. This can also be said for the directions of SW<–>W in some instances. For the many water sports enthusiasts who use shorelines as a safety net, it is impo
rtant to know if a wind field is offshore or onshore – or more specifically side-on, side-side or side-off for many intents and purposes. For this we can use what is called a “Wind Rose”, which is derived from compass readings and can use azimuths (degrees of direction). As in a circle with 360°, wind directions can be gauged on these “azimuths” to find out exact degrees of flow.