6 Jun Sep ; Posts: 5, Default Blowing in the Wind with Big Mon. http://www. thehunnybell.co.uk?v=eG3MGfHtg9s. Jun, am #2. Then they are aligned to blow straight down the Ohio, where the winds will likely be strong and steady. They will continue in this way onto the Mon River, where. 18 Mar A disproportionate number of Pittsburgh's dirtiest air days occur when the region's prevailing southwest winds turn and blow from the southeast.