April 12th is Big Wind Day, which commemorates the highest wind speed ever recorded on the planet. On this day in 1934, the staff of the Mount Washington Observatory recorded the highest surface wind ever measured, anywhere on earth. This big wind was officially recorded at 231 miles per hour. To celebrate, we’ve compiled a photo gallery of chicks’ skirts getting blown up by big winds. Was this sexy before Marilyn Monroe had her dress blown up by a subway grate in The Seven Year Itch? She definitely helped the cause. See if these pics can satisfy your itch after the jump!

There is no holiday literally more ‘uplifting’ than Big Wind day. On this day, 76 years ago the staff of the Mount Washington Observatory recorded the highest surface wind ever measured, anywhere on earth – an astonishing 231 mph. So in celebration of this joyous natural event, we thought we’d examine in pictures the shear force and power of the wind as it applies to the skirt. Happy Big Wind Day.