Severe thunderstorms brought some heavy rain to parts of southeastern Saskatchewan Monday night.

Environment Canada’s Brad Vrolijk said the storms were at their worst when they crossed the U.S border and passed by the Minton and Gladmar area.

He said they do not have official rainfall totals yet, but it is not a stretch to estimate that 100 mm’s of rain fell in some areas close to the Montana border.

“In addition to that there was likely some large hail, we had a report from the Montana side of the border as the storms crossed of quarter sized hail, and it’s likely we saw that on the Canadian side of the border as well,” Vrolijk said.

Vrolijk added the storms weakened as they tracked north as the evening progressed.

He also mentioned wind gusts in Estevan reached a little over 90 km/h for about an hour, despite the city not seeing any thunderstorm activity.

Regina saw only a few showers, with lightning visible east of the city.

More active weather is expected in southeastern Saskatchewan later Tuesday afternoon and into the early evening hours.

“Yeah it’s going to be another active one, probably the last for at least a day or two, but we’re expecting another round of thunderstorms to fire up later Tuesday afternoon in North Dakota and move into the southeastern part of the province, likely east of Regina,” said Vrolijk.

Vrolijk says when the storms first move in they will be slow moving, which means heavy rain will likely become the main concern with these storms.

He encourages people to monitor local weather forecasts Tuesday afternoon as active weather begins to develop and intensify.

By mid-evening Tuesday, most thunderstorm activity is expected to be in western Manitoba.