we had a day of sustained winds in the range of 35 MPH last week I was a little breezy in side but at least it it was bearable Since this is a temporary work space I have no desire to try and block all of the wind, I just needed to slow it down enough so I could cut grind and weld without the errant spark being carried hundreds of feet away and starting a fire. The grass is beginning to green up now as well so fire risks are getting lower