Vehicles buried in snow, highways shut down in Colorado during extreme avalanche conditions
By Brian Lada, AccuWeather meteorologist and staff writer
March 09, 2019, 2:31:56 PM EST
Colorado is facing potentially historic avalanches, threatening to shut down major highways that pass through the Rocky Mountains and forcing some popular ski resorts to close their slopes.
An avalanche was reported on Highway 91 near Copper Mountain, Colorado, on Thursday afternoon with reports of multiple vehicles buried in snow. No injuries were reported.
This is just one of hundreds of avalanches reported across Colorado since the start of March.
On Thursday, the avalanche danger in Colorado was elevated to extreme, the highest on the scale established by the National Avalanche Center. The avalanche danger was lowered to 'high' on Friday, but there remains the potential for major to historic avalanches.
“This [was] the first time that four backcountry zones have gone to Extreme Avalanche Danger since the ten-zone forecast format began,” the Friends of the Colorado Avalanche Information Center (CAIC) said on Thursday morning.
"Historic avalanches have run around the region [Thursday] morning, and they will continue to do so," they added.
A great reminder from our partners at @COAvalancheInfo. Many areas are currently under "extreme" avalanche danger. Please check https://t.co/uOU0HHbUQ6 for updated closure & condition info. Mitigation can happen at anytime on Colorado roadways. Travel prepared and with patience. pic.twitter.com/T4y6lGHGy4— CDOT (@ColoradoDOT) March 7, 2019
Even areas that are not typically prone to avalanches may be at risk due to the extreme danger, such as low-elevation avalanche terrain that rarely has slides.
“The state has already seen several historic slides. Be safe [and] avoid backcountry travel,” American Avalanche Association said.
The National Weather Service (NWS) has also issued avalanche warnings in some of the mountainous terrain across Colorado.
Intense snowfall and strong winds are two of the primary weather factors that prompted the unusually high avalanche risk, according to the NWS warning.
Avalanche danger has been growing over the past several days with some avalanches disrupting travel along Interstate 70. This includes a slide that buried cars on the interstate on Sunday and forced the highway to be closed for several hours.
Skiers and snowboarders planning to head to Colorado ski resorts in the coming days should check with the resorts to see when the danger has diminished and when slopes will be re-opened.
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Several avalanches were reported on Wednesday night and early Thursday morning across Colorado causing temporary road closures.
When avalanches occur, it can take road crews hours to clear the road of snow and debris, so traffic can safely pass through.
Despite the recent avalanche activity, no fatalities have been reported in Colorado this week, according to the American Avalanche Association.
People should continue to use caution when heading into the Colorado Rockies through the weekend as the elevated risk for avalanches will likely persist across the region.
Another batch of snow, heavy at times, will move thru Fri afternoon-evening. Mountain travelers should plan on hazardous conditions. Stay tuned for updates. See https://t.co/uoUwxQXFoP / call 511 for latest road conditions. #COwx— NWS Boulder (@NWSBoulder) March 7, 2019
Peak One avalanche slide is visible through the clouds this afternoon. @coavalancheinfo and @friendsofcaic have issued an extreme avalanche danger for all of Vail and Summit Counties. Stay safe! https://t.co/Gyf9Fs5gOX pic.twitter.com/Kupf9HnA0V— dilloncolorado (@townofdillon) March 7, 2019
#VailPass avalanche at MP 186. @ColoradoDOT has crews on scene with heavy snow equipment enroute. One tow truck was caught in the avalanche. Tow driver is okay! #COTraffic #CoWx pic.twitter.com/mfrTYTU4si— CSP Eagle (@CSP_Eagle) March 7, 2019
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