What is the wind direction shown in RUC weather maps?
The wind flags for these maps are the usual convention for weather maps, showing the direction from which the wind is coming. If the wind flag is toward the west, that means that the wind direction is from the west toward the east. Also, note that the RUC grid map projection is not Mercator (it’s Lambert conformal), so right-to-left winds are generally not due west (except at 95 deg W). Finally, wind in RUC grids are grid-relative for direction, not lat/lon-relative.
