The City of Kamloops, B.C., has declared a state of emergency and 22 people have been ordered evacuated from their homes due to an unstable slope.

Tammy Robertson, a spokesperson for the city, said the slope — north of the Rayleigh subdivision, near the turnoff to Sun Peaks — first showed signs of instability on April 10 due to pooling water, sloughing debris onto Highway 5 below.

"In the last week or so, we've noticed that there's been more movement on that slope, which has caused us enough concern that we wanted to proactively address the situation and ensure that public safety was top of mind, and we have issued an evacuation order," Robertson said.

Robertson said the order was issued around 3 p.m. PT Thursday, and residents were notified around 4:30 p.m. By Thursday evening, 22 evacuees had registered with the city's emergency response centre.

So far, there have been no injuries reported, and the highway remains open.

Robertson says the city will continue to monitor the slope for any changes and act accordingly.

"Our hope is that we see a drying trend, so that the slope will start to naturally stabilize because of the reduction of water in it," she said.

"If we continue to see more moisture, more rainfall, we'll just have to look at doing what we can to mitigate any further slope movement."

The city will hold a briefing on the situation on Friday morning.