Ice Storm Warning in effect for Portland, Vancouver areas; thaw is coming – KGW.com

An Ice Storm Warning is in effect and will continue into Monday morning.

PORTLAND, Ore — An Ice Storm Warning is in effect for the Portland and Vancouver areas. The warning will continue until 6 a.m. Monday. KGW chief meteorologist Matt Zaffino says after that warning expires, lowland areas will be done with snow and freezing rain. 

Zaffino says heavier precipitation rolls in overnight, and for much of the Portland area, especially east of I-205 and in the West Hills, the rain will fall into below-freezing air. Between .1 and .5 inches of ice will accumulate.

The National Weather Service (NWS) said people should expect snow and ice-covered roads Monday. Widespread power outages and tree damage due to ice are also possible.

The good news, Zaffino said, is that Monday will bring warmer temperatures and the melting will begin.

The Columbia River Gorge will still get snowfall Sunday night with a mix of ice or freezing rain. Zaffino said the Gorge may see an inch of ice.

Since Thursday, Zaffino said 7-14 inches of snow has blanketed parts of the North Willamette Valley and Southwest Washington. In Marion and Clackamas counties, there’s been an inch of snow accumulation or more. Mount Hood Meadows has gotten at least 33 inches of snow and counting since the storm began.

The snow and ice mix has caused slick roads and downed trees and power lines throughout the metro area. People should stay home and avoid driving if possible.

Hundreds of thousands of customers are without power across the metro area. As of 5:00 p.m. Sunday, Portland General Electric reported more than 200,000 customers without power from Portland down through Marion County. Check for updates in your area.

Gov. Kate Brown has declared a state of emergency in nine counties due to the power outages, disruptions to transportation and downed trees and power lines.

RELATED: Oregon Gov. Brown declares state of emergency for 9 counties due to severe winter storm

Portland metro area

The metro area is now in an Ice Storm Warning until 6 a.m. on Monday. The NWS said ice accumulations of one-third to two-thirds of an inch, heaviest near the west Columbia Gorge and over the West Hills, can be expected. People should expect snow and ice-covered roads Monday. Widespread power outages and tree damage due to ice are also possible. 

Portland and surrounding areas have received between 7 and 14 inches of snow since Thursday night, Zaffino reported. People should stay home and avoid driving if possible.

Temperatures will warm on Monday morning and the thaw should begin.

Columbia River Gorge

The western part of the Columbia River Gorge remains under a Winter Storm Warning through 6 a.m. on Monday. The NWS said additional snow accumulations of 1 to 6 inches near Cascade Locks and ice accumulations of up  to three-quarters of an inch near Corbett and Multnomah Falls can be expected and winds gusting as high as 40 mph. 

The heavy snow, ice and wind has led to dangerous driving conditions.

RELATED: What is black ice? What drivers should know

Southwest Washington

An Ice Storm Warning took effect in the Vancouver area at 1 p.m. on Sunday and lasts until Monday morning. Similar to the Portland metro, snow and ice-covered roads are expected Monday. Widespread power outages and tree damage due to ice are also possible.

Clark County declared a state of emergency Saturday morning due to heavy snow and ice in the area. Officials are asking Clark County residents to stay home and off the roads until weather conditions improve. 

Willamette Valley

The region is under a Winter Weather Advisory until 6 a.m. Monday. Up to 2 inches of snow is possible in some areas, along with up to a quarter-inch of ice.

KGW chief meteorologist Matt Zaffino said Canby got 1-1.5 inches of ice accumulation and Oregon City got 1 inch of ice accumulation by Saturday night. There were widespread reports of an inch of ice in Marion County from Friday night through Saturday morning. 

Travel in the area is highly discouraged. Power outages were reported throughout Marion County.

Coast Range

A Winter Weather Advisory ended at 6 p.m. Sunday. Additional snow accumulation of up to 3 inches and ice accumulation up to two-tenths of an inch is possible in areas such as Vernonia and Jewell, according to NWS.

Drivers should be prepared for icy roads. 

What’s next?

Monday will bring warmer temperatures with moisture turning to rain and ending the threat of winter weather. Zaffino said that by Monday night, everything will be slushie and melting.

RELATED: KGW reporter notebook: Ice, snow wreak havoc across Portland metro area