Just assuming you mean Orangeville Ontario, that's a little more than 300km or three and a half hours driving time.
It takes an hour and 15 minutes driving south on Kimball Rd.
The address of the Emery County Library Orangeville Branch is: 125 South Main Street, Orangeville, 84537 9999
About 1.5 hours assuming the border isn't backed up.
Orangeville Transit was created in 1991.
Orangeville Americans was created in 2011.
Rise at Orangeville was created in 1972.
Toronto to Sarnia is about 2 and a half hours give or take 15 mins.
The motto of Sarnia is 'Sarnia Semper'.
The phone number of the Emery County Library Orangeville Branch is: 435-748-2726.
There is no direct highway, but you take Kimball south from Sarnia, until you get to St. Clair Rd (40) that should take you to the 401 highway leads to Windsor.
Google Maps estimates the driving time as 7 hours and 17 minutes.
Unfortunately it is impossible to make long term predictions of tornadoes such as that.