Much of the province had already endured a fierce thunderstorm on Monday night that drenched many communities with torrential rain.
Tuesday's storm also brought heavy rain to areas around Moose Jaw, Regina and east to Manitoba.
Regina had recorded 79 millimetres of rain from the Monday downpour. The weather office said that by Wednesday morning another 50 to 110 millimetres of total precipitation was likely.
"Wind gusts near 90 km/h have been observed in the Moose Jaw and Assiniboia regions," the weather office said at 3 p.m. CST. The weather office said the winds will diminish as the system moves east.
Queen City Ex
The nasty weather led to the cancellation of a parade and fireworks to usher in the Queen City Ex, Regina's annual fair.
The parade, which was set for Tuesday night, was cancelled a few hours ahead of the start time.
However, the fair itself — with midway rides and games — is still set to open Wednesday at noon.
"It's the first time we've really had to deal with some crazy weather and it's been for 48 hours," Josh Shaw, events manager for Evraz Place, said Tuesday. "The midway guys and the concessionaire people are really battling out there to get set up in time to be ready for tomorrow. It's really something we haven't seen before."
The weather forecast calls for a return to sunny skies on Wednesday.