SPOKANE, Wash. -

Snow returned to the Inland Northwest with a vengeance Monday. Emergency crews were busy all day cleaning up crashes on the roads.

From 5 a.m. Monday until about 7:30 p.m. there were more than 150 collisions or slide-offs called into 9-1-1. Many minor slide-offs were not reported.

Snow fell during peak commute hours and slowed traffic from Grand to I-90. Along South Arthur, the smallest of slopes were too slippery for some.

"This year, this was the worst so far that I've experienced," said driver Kathy Parrott.

Washington DOT, Spokane County, and Spokane City plows worked throughout the night clearing roads as quick as they could.

The city of Spokane hesitated on calling a Stage One Snow Event, that would result in an all out plow of Spokane, because the forecast was so off.

KXLY ran into several good Samaritans helping people navigate the roads. Jonathan Seaman-Cwik and his dad helped push drivers up maple.

"There were a couple guys towing the bigger ones and then we'd just push them from behind," he said.

Kathy Parrott's front-wheel drive minivan made the trek up the South Hill twice this evening.

"Coming home at 4 p.m. I had to zig-zag around cars to get up the hill on High Drive and then the rest of the way was doable, but I just came up (High Drive) now and I followed a snow plow and it was fine," Parrott said.

Others like Patrick Pugh plotted their path.

"Definitely went to Maple instead of Grand here just because it's Grand, and most people in Spokane know, don't take Grand on these kind of nights," he said.

Monday evening, the city had 17 plows out clearing, deicing, and sanding. Crews focused on arterials, hilly areas, and emergency routes to hospitals. Spokane County is currently plowing and sanding all of the priority one roads in unincorporated parts of the county. Crews will work around the clock to plow more than 2,500 miles of roads.

You may also notice yellow flashing lights on the South Hill, which were activated by the city so drivers don't get stuck going up and down the hills.

In the outlying areas, the snow forced an early release for students at Liberty High School Monday afternoon because snow drifts were closing roads. After school activities were closed at Freeman High School as well.