https://www.ndbc.noaa.gov/show_plot.php?station=vdxa2&meas=dmpd&uom=E&tz=AKST
NDBC - 5-day plot - Dominant Period at VDXA2
National Data Buoy Center - 5-day plot - Dominant Period at station VDXA2 (61.127N 146.344W) - Valdez, AK.
ndbcdayplotdominantperiod