Extreme Temperatures
ADOT is warning drivers to watch for icy roads in northern Arizona. There have been a few reports of vehicles going off the sides of roads.
The eastbound lanes of Interstate 40 in Williams were closed for a short time Thursday morning to remove ice from a bridge at milepost 162. ADOT officials said Interstate 17 just south of Flagstaff is clear of snow, but drivers should expect a slick road surface. Temperatures in Flagstaff were in the 20s Thursday morning and it's expected to be in the teens Friday morning.
An overnight freeze warning is in effect for elevations between 3,000 and 5,000 feet. Schools in the Flagstaff Unified School District were on a two-hour delay Thursday. Flagstaff received nearly 9 inches of snow on Wednesday and more than 2 feet of snow fell at Arizona Snowbowl. Another round of snow could come next week. Snowbowl hopes to open Nov. 20.
Motorists heading up to the area should be sure to have blankets, warm clothes and a full tank of gas.

A cold summer in Scotland has led to this incredible natural phenomena with remaining ice and snow forming a network of icy tunnels and caves clinging to the edge of mountains
The total number of patches counted across Scotland was 678 (see table below). This is way more than double the amount for 2014, and hundreds more than any year since the survey was started in 2008.
Totals since 2008
2008 - 34
2009 - 35
2010 - 34
2011 - 36
2012 - 72
2013 - 81
2014 - 281
2015 - 678
But the southernmost city in the world and the southern part of Tierra del Fuego is hit since two days by strong winds, low temperatures and snowfall. Very anomalous for November, isn't it?
The city of Ushuaia turned completely white on November 2, 2015.
The very unusual snow for November was accompanied by low temperatures down to zero Celsius and strong wind gusts varying in intensity.
There may only be seven weeks to go until Christmas, but that did not stop Britons flocking to the beach as the country saw the hottest start to November since records began.
There was no need for extra layers yesterday as pictures from across Britain showed dozens of people sunbathing in balmy spring-like weather on Brighton beach.
Across the country the mercury touched 72.3F (22.4C) in Ceredigion, Mid Wales, beating the previous record of 71.1F (21.7C) set in Prestatyn, north Wales, in 1946.
It is the highest November temperature recorded by the Met Office since it began collecting data in 1910.
In Wales thousands of day trippers heading to the mountains and coast with youngsters playing on the sands.
One of the warmest Halloweens on record saw thermometers hit 67F on Saturday in Hampton, south-west London.
The US space agency research claims an increase in Antarctic snow accumulation that began 10,000 years ago is "currently adding enough ice to the continent to outweigh the increased losses from melting glaciers.
Global warming theories have been thrown into doubt after Nasa also claimed current horror predictions into future sea-level rises may not be as severe.
Major studies previously made the case for global warming being a man-made problem, including the the Intergovernmental Panel on Climate Change's (IPCC) 2013 report, which said that Antarctica was overall losing land ice.
But a Nasa spokesman said: "According to the new analysis of satellite data, the Antarctic ice sheet showed a net gain of 112 billion tons of ice a year from 1992 to 2001.
"That net gain slowed to 82 billion tons of ice per year between 2003 and 2008."
Extreme weather conditions have been lashing the country since October 28, as the low pressure area concentrated over the northern part of the Persian Gulf, according to climate scientist Dr Abd al-Aziz al-Rubaie, as cited by thewatchers.com.
Even 10,000-foot Mt. Baker is forecast to get 70″ of snow in the next 3 days... This is gonna be a crazy weekend in Washington state.THE PRECIPITATION BULLSEYE OVER MOUNT RAINIER IS MORE THAN 20 INCHES IN 48 HOURS IN THE WETTEST MESOSCALE MODELS. - NOAA Seattle, WA today
Snow levels will start high but will drop to as low as 4,000-feet by Sunday.
Some models are even showing up to 20-inches of liquid precipitation (which would translate to about 20-feet of snow) in only 48 hours on Sunday.SNOW LEVELS WILL DROP TO AROUND 4000 FEET ON SUNDAY WITH A FEW INCHES OF SNOW POSSIBLE IN THE MOUNTAINS. - NOAA Seattle, WA
"A pair of frontal systems with a significant tap of Pacific moisture will move through western Washington this weekend. They will bring heavy rain at times with the mountains receiving 4 to 8 inches of precipitation with locally higher amounts possible near Mount Rainier. Snow levels will remain high through Saturday before falling on Sunday as a cool upper level trough digs into the region. In addition to the precipitation, windy conditions at times are expected for much of the region." - NOAA Seattle, WA
A snowstorm hit Mohe, China's northernmost county in Heilongjiang Province, from early morning on Monday.
The depth of snow reached 8 centimeters (3.14 inches) by 17:00 and the heavy snow brought the visibility down to less than 100 meters (328 feet) as well. Vehicles have to slow down on snow-covered roads, while the local sanitation department dispatched snowplows to clear up the roads.
Comment: Unseasonal record breaking high temperatures have also been reported over Eastern U.S. and elsewhere in Europe