National Weather Service

Jay Breidenbach / National Weather Service

Treasure Valley residents still dealing with the aftermath of last week's record-setting snowfall now have an inversion on their hands, too.

The National Weather Service in Boise says the inversion set up Sunday. Meteorologist Bill Wojcik says it's likely to last through Saturday when winds from a new system disrupt the layering of warm air over cold. He says the inversion - the first of the season - reaches 10,000 feet into the atmosphere.

Tom Kelly / Flickr

Forecasters with the National Weather Service say storms will move into southern and central Idaho this afternoon. Some of the storms could produce heavy rain and flash flooding.

The system is a surge of monsoonal moisture approaching Idaho from the south. NWS Meteorologist Les Colin says an inch of rain could fall in some areas.

Bogus Basin

Snow is coming to southern Idaho, lots of it. The National Weather Service says a “significant snowfall event” will start Thursday night and last through Saturday.

The snow comes from a combination of moisture from the Pacific and an upper level low pressure system from Alaska. It will bring prolonged snowfall, which could mean substantial snow totals in the mountains.  NWS has issued a Winter Weather Advisory from the Oregon border East to Twin Falls, Idaho.

Here are the latest projected snow totals from the National Weather Service:

AlistarHoward / Flickr Creative Commons

Officials with the National Weather Service have issued an avalanche warning for central Idaho's Sun Valley region, warning that both natural and human-triggered avalanches are likely.

The Times-News reports the warning will remain in effect until further notice for the Sawtooth, western Smoky and Soldier Mountains as well as for alpine terrain near Galena Summit.

snow, tree, weather
Jim Bauer / Flickr Creative Commons

A storm that will bring snow and frigid temperatures, is on its way to Idaho. The snow will come first, blowing into into Oregon this evening and into southern Idaho later Friday night.

"We’re going to get several inches of snow in most of southeast Oregon and in southwest Idaho," says Les Colin, a meteorologist with the National Weather Service in Boise."The Treasure Valley here will get about one to two inches.”

National Weather Service

Enjoy the warm weather while you can.  A cold snap is on its way to southern Idaho. It’s bringing snow to the mountains and cold temperatures across the state.

Valerie Mills is a meteorologist with the National Weather Service in Boise. “We will not be above freezing after tonight for the rest of the week,” says Mill. “Get ready for cold!”

Redfish Lake Camera Screengrab

The National Weather Service office in Boise grabbed a slick time-lapse video of Redfish Lake, Idaho over the weekend. The three-day lapse captured by the Sawtooth Interpretive and Historical Association web-cam shows fog dancing across the lake and a glimpse of winter.

Korri Anderson / National Weather Service

The rare wet weather in southwestern Idaho and southeastern Oregon produced more than 10,000 lightning strikes on Tuesday and Wednesday.

The National Weather Service office in Boise says Wednesday’s storms created nearly 6,000 strikes in its forecast area. That includes three in Oregon counties and 14 in Idaho. 

One strike was caught on camera by National Weather Service Meteorologist Korri Anderson. He took the image around 8:30 p.m. Wednesday when a storm moved into the Treasure Valley. 

Scott Graf / Boise State Public Radio

UPDATED: The National Weather Service reports Boise hit 110 degrees shortly after 4:00 p.m. Monday.  Since record keeping began, the highest temperature ever recorded in Boise is 111. Monday's high broke the previous record by a whopping six degrees.

Frankie Barnhill / Boise State Public Radio

The National Weather Service calls this morning an “historic freezing rain event.”  A spokesman says Boise was the hardest hit by the ice.  The conditions closed schools, highways, and caused cars to slip and slide.  The Ada County Sheriff’s Office reports more than 41 crashes this morning and 32 slide offs or stalled cars.   

Frankie Barnhill / Boise State Public Radio

On the opening day of Idaho's legislative session, people navigating around the capitol city are experiencing a winter wonderland. Fresh snow blankets Boise, making roads dangerous for the evening commute.

The National Weather Service in Boise has issued a winter weather advisory for much of southwest Idaho. The advisory will be in effect until 8:00 p.m.

Bogus Basin Recreation Area

The National Weather Service is seeking input from the public on new language it’s considering for weather alerts.  Traditionally, forecasters use words like “warning”, “watch” and “advisory”.  But not everyone understands exactly what each term means. 

So 26 Weather Service offices across the country have started a pilot program to use some new language that explains in greater detail what weather is being predicted. The program got underway earlier this month.

Snow Predicted For Weekend, Ski Areas Could Get 12 Inches

Dec 14, 2012
Amy Goodman / Flickr

The National Weather Service in Boise is predicting winter weather conditions for much of southern Idaho this weekend.

Up to a foot of snow could accumulate at McCall's Brundage Mountain, which opened today. Bogus Basin, near Boise, could receive up to 10 inches.

Meteorologist Colleen Decker says the snow will begin between midnight on Saturday and into early Sunday morning.

Schweitzer Mountain Resort

Weather forecasters say the current dry spell in the Northwest may turn into a dry winter. But the region’s ski areas aren’t buying it.

John Livingston is the chief meteorologist at the National Weather Service in Spokane. He says the key to the Northwest’s winter lies in ocean surface temperatures between South America and Indonesia. That’s where patterns are developing that seem to point to a warmer “El Nino” year. “It probably means maybe less snow that we would normally expect in the mountains and then definitely less snow in the valleys with the warmer temperatures.”

National Weather Service

Boise will be without radar service for most of this week, but local forecasters say it’s for good reason.  The radar unit that serves the area will be offline for about five days as part of an upgrade. 


Jay Breidenbach is with the National Weather Service office in Boise.  He says radar works by sending out energy and then measuring it once it bounces off precipitation.  Right now, the Boise radar sends that information out on a one-dimensional plane.  After the upgrade, it will do so in two dimensions. 

If you thought it was warmer than usual Monday, you were right. Valerie Mills with the National Weather Service says Boise was nearly 20 degrees above average.

“The high temperature at the Boise airport today hit 108 degrees, and that was at 3:05 PM. That’s a new record for today but," she adds,  "not quite as hot as we were July the 19th of 1960 when we hit 111 degrees. That’s our all-time record high for Boise.”

Scott Ki / Boise State Public Radio

After weeks of sunny, warm weather, it finally rained today in parts of southern Idaho. Bill Wojcik is a meteorologist for the National Weather Service in Boise.  “Well this morning we had the rain falling as far west as Jerome and Twin Falls and at this time it extends all the way back to Idaho Falls and probably even into the western part of Wyoming.”

Adam Cotterell / Boise State Public Radio

Sunday saw record high temperatures for much of southwest Idaho and eastern Oregon. In Boise it got to 91 degrees. That unusual heat brings a chance of thunderstorms for much of this week. But the temperature won’t stay at record levels long. Later in the week highs will likely drop to the 50s. 

Jay Briendenbach, the Warning Coordination Meteorologist at NOAA's National Weather Service Office in Boise, says a system of high pressure ridges and troughs is circulating hot and cold air around the country quickly.