Environment Canada issued severe thunderstorm warnings for Sarnia-Lambton Saturday afternoon.
A line of severe storms capable of producing very strong wind gusts, pea to dime size hail and heavy rain raced across the area in advance of a cold front.
Curtains of rain on gusty winds, and intense lightning hit Sarnia at about 3:30 p.m.
There were reports of power lines down on Maxwell Street between Copeland Road and Oxford Street.
Warnings for Sarnia, western and eastern Lambton County ended by 5 p.m. but a severe thunderstorm watch remained in effect with the chance of storms to continue Saturday night.
A tornado warning was in effect for awhile for parts of Windsor-Essex Saturday afternoon.
Sarnia's forecast for Sunday called for clearing skies in the morning, gusty northwest winds and a high of 17 C, 63 F.
The St. Clair Conservation Authority has also issued a flood watch Saturday.
A wet spring, coupled with elevated water levels in the St. Clair River and Lake St. Clair, has resulted in the Sydenham River remaining high throughout the watershed, particularly in Wallaceburg.
The current forecast is calling for 10 - 15 mm of precipitation over tonight and early Sunday morning, which may further elevate water levels into natural floodplain areas, agricultural fields and parks.
High intensity rainfall is possible, especially during thunderstorms. High amounts of rainfall in a short period of time can lead to increased runoff and flash flooding, particularly in urban areas.
Saturated soil conditions from the rain and prolonged high water levels could contribute to ponding, increased runoff into watercourses, and possible increased erosion and seepage issues.
River banks are expected to be slippery, with possible erosion. Residents are reminded to avoid watercourses and flooded areas due to slippery banks and cold, swift moving water.
Children and pets should be kept away from the water. -With files from Dave Dentinger