Environment Canada says heavy rain is expected in Niagara Falls - Welland - Southern Niagara Region
Heavy downpours expected over some areas.
Heavy rain continues to fall over portions of the Golden Horseshoe and is expected to continue until sunrise. Radar estimates some locations close to the Lake Erie shoreline have received in excess of 50 mm of rain with another 20 to 40 mm possible.
Heavy downpours can cause flash floods and water pooling on roads. If visibility is reduced while driving, turn on your lights and maintain a safe following distance. Localized flooding in low-lying areas is possible. Campers should move away from low-lying areas.