The warning stays in effect until about 11:30 p.m. Friday.
"A couple of storms over the eastern plains could become severe with hail up to one inch in diameter and 60 miles per hour wind gusts".
The high temperature on Saturday is expected to be 82, when afternoon rain and thunderstorms are expected.
Hail damage to vehicles is expected, along with wind damage to roofs, siding and trees.
Forecasters say severe storms will move from the Oklahoma Panhandle and northwestern Oklahoma Thursday night.
Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall.
'Tell my family I love them'
At one point, apparently fearing the worst, Smith asks the dispatcher to convey a message to his family that he loves them. The prosecutor added that the gunman shot Smith at least twice while the officer was laying on the round.
Residents are asked to follow all instructions from emergency services officials and signs to keep lanes clear for emergency vehicles.
The watch was issued at about 2:45 p.m.
Environment Canada is warning a severe thunderstorm could bring strong winds, heavy rain and large hail to southwestern Ontario Friday.
Manchester United defender Timothy Fosu-Mensah on Crystal Palace loan move
He is now on the radar of Ghana who are keen to persuade him into a nationality switch after playing for the Dutch at youth level. He spent the first two years with the Red Devils' academy, before making his first team debut against Arsenal in February 2016.
Additionally, U.S. 60 is blocked due to downed trees and storm debris about 1½ miles east of Bartlesville, according to the Oklahoma Highway Patrol.
Syrian army closes in on IS-held town in Raqqa
The Syrian government has said the United States forces were committing "crimes" by killing civilians on a daily basis. She said however that the 2017 returns were less than the number of displaced this year: almost 809,000.