Data Update Rates Anemometer data are updated every minute. Data are average values from the previous 1-minute interval. Profiler data are updated every 10 minutes. Data are average values from the previous 10-minute interval. Measurement Units Wind speeds are given knots.
Wind directions are magnetic and are the direction from which the wind is coming.
Direction angle is measured clockwise from Magnetic North. The magnetic declination for Juneau is approximately 29.5 degrees. To calculate the wind direction relative to True North, add 29.5 degrees. Status Indicators Data values which are unavailable are indicated by 'NA' and a gray background. Data values which did not pass quality control are indicated by 'NA' and a white background.