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February 11 to February 17: This Week in Denver Weather History

Thursday, February 15th, 2018 6:07pm MST
This week in Denver weather history

February 11 to February 17: This Week in Denver Weather History

Denver’s weather is often a story of extremes and even in what is historically a calm period like February, significant events can and do occur. From record-setting Arctic cold that sent temperatures to far below zero to powerful, damaging wind, this week in Denver weather history has been an eventful one.

From the National Weather Service:

31-12

In 1899…a protracted cold spell lasted almost two weeks. Low temperatures plunged below zero on all days but February 9th with a reading of 6 degrees. The coldest low temperature of 22 degrees below zero on February 6th was a record low for the date. Low temperatures of 20 degrees below zero occurred on both February 11th and 12th… But only the 11th remains as the record minimum for the date. High temperature of only 5 degrees below zero on February 11th was a record low maximum for the date. High temperatures climbed to only zero degrees on both February 2nd and 3rd…but were not records. Intermittent light snow or flurries fell during the period. The most snowfall…2.0 inches…occurred on February 2nd.

5-11

In 1978…the 5th marked the start of a record 7 consecutive days of dense fog at Stapleton International Airport. The heavy fog reduced the visibility to 1/4 mile or less for a period of time on each of these days. Light snow and/or freezing drizzle occurred on most days. Fog reducing visibility to less than 7 miles was recorded at Stapleton International Airport on 11 consecutive days through the 15th. During the period 5-14…the cold thick fog deposited heavy rime ice up to 5 inches thick on power lines and poles over a wide area of eastern Colorado…causing a major electrical power outage disaster.

9-11

In 1965…heavy snowfall totaled 6.2 inches at Stapleton International Airport where northeast winds gusted to 25 mph.

In 1993…the same storm that dumped heavy snow in the mountains combined with an arctic cold front to produce heavy snow across metro Denver. Upslope snows of 4 to 8 inches were common with some areas receiving nearly a foot. Ten inches of new snow were measured in Parker and 7 inches in southeast Denver. At Stapleton International Airport… Snowfall totaled 8.1 inches. Strong winds combined with the snowfall to produce near-blizzard conditions over the plains closing many roads east of Denver. North winds gusted to only 18 mph at Stapleton International Airport on the 9th.

10-11

In 1971…a wind gust to 80 mph was recorded in Boulder at the National Center for Atmospheric Research. A wind gust to 69 mph was measured at the National Bureau of Standards. In downtown Boulder wind gusts to 43 mph were clocked. No damage was reported. North to northwest winds gusted to 39 mph on the 10th and to 41 mph on the 11th at Stapleton International Airport.

In 1999…heavy snow developed over sections of metro Denver during the evening hours. Snowfall totals included: 6 inches at Eaglecrest…6.5 inches at Highlands Ranch…and 8.5 inches about 5 miles south of Sedalia. Only 1.0 inch of snow fell at the site of the former Stapleton International Airport. Strong winds and snow caused near blizzard conditions north of metro Denver.

10-12

In 1958…heavy snow fell across metro Denver. At Stapleton Airport…where northeast winds gusted to 22 mph…6.7 inches of snowfall were measured.

In 1995…cold arctic air brought heavy snow to the foothills and western Denver suburbs. Golden measured 15 inches of snow with 14 inches in south Boulder. Locations in the foothills recorded between 10 and 15 inches of snow. Only 6.1 inches of snow fell at Stapleton International Airport where north winds gusted to 30 mph on the 10th.

10-13

In 1905…an extremely cold arctic air mass moved over the city behind a cold front on the 10th and persisted through the morning of the 13th. North winds were sustained to 25 mph behind the front on the 10th dropping the temperature to a low of 2 degrees below zero…which was also the high reading on the 11th. Light snowfall totaled 3.0 inches overnight of the 10th into the 11th. The low temperature plunged to 19 degrees below zero on the 11th. Records were set on the 12th and 13th. The high temperature of only zero degrees on the 12th was a record low maximum for the date. The low readings of 21 degrees below zero on the 12th and 14 degrees below zero on the 13th were record minimum temperatures for those dates.

11

In 1875…northwest winds were brisk all day. The velocities increased to 30 to 50 mph during the early evening.

In 1957…Chinook winds gusting to 49 mph warmed the temperature to a high of 64 degrees at Stapleton Airport.

In 1971…a rare February thunderstorm produced 1/4 inch diameter hail in southwest Denver.

In 1981…the cold spell of the 10th came to a quick end with strong Chinook winds. Gusts to 84 mph were recorded at mines peak and to 80 mph at Wondervu. Gusts in the foothills ranged from 50 to 65 mph. Southwest winds gusted to only 23 mph at Stapleton International Airport.

In 1984…a near-blizzard across eastern Colorado closed I-70 east of Denver and stranded 1200 motorists at Limon. Only 0.9 inch of snow fell at Stapleton International Airport where north winds gusted to 43 mph.

In 1988…wind gusts to 77 mph were measured at Echo Lake. West winds gusted to only 32 mph at Stapleton International Airport.
11-12 in 1899…the temperature plunged to lows of 20 degrees below zero on both days.

In 1900…northwest winds sustained to 52 mph with gusts to 60 mph warmed the temperature to a high of 58 degrees on the 11th. An apparent cold front overnight produced 3.7 inches of snow and northeast winds gusting to 30 mph. The high temperature on the 12th was only 26 degrees.

In 1994…moist upslope winds and an upper level storm system produced heavy snow over western portions of metro Denver. Snowfall amounts totaled 10 inches in Golden and 8 inches at Strontia Springs Reservoir 15 miles southwest of Denver in the South Platte canyon. Snowfall at Stapleton International Airport totaled only 3.6 inches…but north winds gusting to 35 mph on the 11th produced occasional visibilities as low as 1/4 mile in heavy snowfall and blowing snow.

11-12

In 1899…the temperature plunged to lows of 20 degrees below zero on both days.

In 1900…northwest winds sustained to 52 mph with gusts to 60 mph warmed the temperature to a high of 58 degrees on the 11th. An apparent cold front overnight produced 3.7 inches of snow and northeast winds gusting to 30 mph. The high temperature on the 12th was only 26 degrees.

In 1994…moist upslope winds and an upper level storm system produced heavy snow over western portions of metro Denver. Snowfall amounts totaled 10 inches in Golden and 8 inches at Strontia Springs Reservoir 15 miles southwest of Denver in the South Platte canyon. Snowfall at Stapleton International Airport totaled only 3.6 inches…but north winds gusting to 35 mph on the 11th produced occasional visibilities as low as 1/4 mile in heavy snowfall and blowing snow.

11-13

In 1903…west to northwest Chinook winds gusting to 34 mph warmed the temperature to a high of 50 degrees on the 11th… Before temperatures rapidly plunged to a low of 14 degrees behind a cold front. Light snow fell through the 13th and totaled 4.2 inches in the city…while temperatures ranged from a high of 14 degrees on the 12th to a low of 5 degrees below zero on the 13th.

12

In 1874…5 inches of snow fell in downtown Denver. Melted snow resulted in 0.31 inch of precipitation.

In 1875…forest fires burned very brightly in the foothills to the west of Denver.
12-13 in 1915…heavy snowfall totaled 7.0 inches over downtown Denver. Northwest winds were sustained to 24 mph on the 13th.

In 1951…heavy snowfall totaled 8.1 inches at Stapleton Airport where northeast winds gusted to 28 mph on the 12th.

In 1968…snowfall totaled 5.6 inches at Stapleton International Airport where northeast winds gusted to 26 mph. Snow fell all day on the 12th and into the morning hours of the 13th.

In 1997…heavy snow fell in the foothills southwest of Denver. Conifer…Evergreen…Morrison…and north turkey creek received 6 to 8 inches of new snow overnight. Only 0.2 inch of snow fell at the site of the former Stapleton International Airport. North-northeast winds gusted to 23 mph at Denver International Airport on the 13th.

13

In 1886…northwest winds were sustained to 40 mph during the early morning hours…but winds were strong and gusty all day.

In 1918…west winds were sustained to 42 mph with a measured extreme velocity to 44 mph. The strong Chinook winds warmed the temperature to a high of 58 degrees.

In 1988…high winds raked metro Denver. Boulder reported a wind gust to 67 mph with 63 mph at Lakewood and 49 mph at Stapleton International Airport. The strong winds toppled a tree onto a car in Aurora. Northwest winds gusting to 49 mph at Stapleton International Airport warmed the temperature to a high of 64 degrees.

In 2010…a peak wind gust to 89 mph was recorded in Boulder. North winds gusted to 28 mph at Denver International Airport.

» Click here to read the rest of February 11 to February 17: This Week in Denver Weather History

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Cold front to bring changes in the weather to Thornton on Thursday

Thursday, February 15th, 2018 5:11am MST

A bit of half and half today. The day starts out nice enough and will actually see high temps around normal. However, an approaching cold front will send the mercury down in the afternoon and offer up a slight chance for snow.

Mostly sunny skies will be above initially then a slow increase in cloud cover will occur as the front approaches. By this evening it will be mostly cloudy. Winds will be light initially then become a bit breezy by late morning and last into the evening with the front pushing through.

Temperatures will warm up nicely with us hitting our daytime high in the mid to upper 40s around noon or so. By about 3:00pm, the cold front will make itself felt in earnest and temperatures will decrease somewhat quickly.

After 3:00pm and the until about 10:00pm we do see slight chances for a bit of snow. Most of the moisture will be south of us though so a half inch is the best we could hope for and likely will be less.

Skies will clear overnight and low temperatures overnight will hit the mid-teens.

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Unseasonably warm temperatures Wednesday to be driven by downslope winds

Wednesday, February 14th, 2018 5:08am MST

Some good, some not so good in today’s weather forecast for Thornton. While we will enjoy temperatures well above normal, we will also see a good bit of wind from the west.

Mostly sunny skies start things off and we will see a bit of an increase in coverage by about noon but still expect some blue up there. Temperatures start out chilly but then will see a steady increase with highs to the low to mid-60s.

Downslope winds are going to be the reason for those warm temperatures. Speeds will increase this morning, peaking in the afternoon. At their height, gusts could push toward 40mph.

Tonight, winds will ease gradually with overnight lows near the freezing mark.

Keep an eye on the temps and wind here.

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Thornton’s Tuesday to offer warmer temperatures, more sun

Tuesday, February 13th, 2018 5:14am MST

Yesterday’s chill is set to move out and in its wake we will enjoy a pretty nice day today. Expect temperatures to be not too far off of normal for the date and a decent bit of sun.

The day starts with mostly sunny skies and we should have the same sky conditions for much of the day, perhaps a bit fewer clouds in the evening. Temperatures will start out on the chilly side but then warm up nicely with highs topping out in the mid to upper 40s.

Tonight, skies remain mostly clear with lows in the upper 20s.

All in all it should be a pretty nice winter day.

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Cold front keeps things chilly for Monday, might offer some flurries

Monday, February 12th, 2018 5:03am MST

A cold front has arrived this morning and that is going to chill us out again. While temperatures will be cold, we aren’t expecting much in the way of precipitation though.

The day starts with mostly cloudy skies and we can expect similar sky conditions throughout the day. The mercury is going to remain below freezing with highs today only in the mid to upper 20s. Some light snow / flurries will be possible this morning into the first part of tonight. However, there isn’t much moisture to work with so little, if any, accumulation is expected.

Tonight, skies will begin to clear and any snow should be done by about 10:00pm. Lows tonight will dip into the teens.

Previewing the balance of the week, it looks to be a bit of a roller coaster. After today’s chill, Tuesday and Wednesday will warm up nicely followed by our next chance for snow Thursday. We then should see drying, warming conditions for Friday and the weekend. Get more details in the extended weather forecast here.

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Cold front to bring unsettled weather for start of Thornton’s weekend

Friday, February 9th, 2018 5:03am MST

Quite a bit of a change in our weather. A cold front moved through last night and that will offer up much colder temps and bring chances for precipitation today and Saturday.

For today, areas of dense fog start things of and a few spots of freezing drizzle may be seen in the morning. The bulk of the daytime should remain dry then this evening some drizzle and a few flakes of snow may be seen. Temperatures today will be chilly with highs in the mid-30s under mostly cloudy skies.

Overnight tonight we may see some freezing drizzle, a bit of snow but with little accumulation. Temperatures are going to get quite cold with lows down well into the teens.

Saturday is when we expect moisture to increase and give us our best chance for snow. The best opportunity comes tomorrow afternoon with things ending in the late evening. Overall, we could see a couple of inches of the white stuff. Highs tomorrow will only be in the low to mid-20s with cloudy skies.

As the system moves out Saturday night, skies will begin to clear and that will lead to very cold temps. Lows into Sunday morning are expected to hit the single digits.

The good news is that Sunday sees things start to turn around. There will be plenty of sun and temperatures should rebound nicely to around the 40 degree mark.

Stay safe, stay warm!

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Temperatures to climb Thursday but so will the wind speeds

Thursday, February 8th, 2018 5:10am MST

A bit of good and bad with our weather today. We will enjoy our mildest day of the week with temps pushing close to 20 degrees above normal. However, much of that warmth will be the result of some pretty strong, downslope winds that we will be experiencing.

The day starts out mostly sunny and similar sky conditions should be above throughout the day. We start out a bit chilly but not as cold as usual thus giving us a head start toward our high temperature today in the low to mid-60s.

Winds will be a bit breezy initially this morning then increase in speed as the day progresses, peaking around 3:00pm with gusts to 35mph or so before gradually easing in the evening and the first part of tonight.

Tonight, partly clear skies will be above with lows dipping to the mid to upper 20s.

The wind won’t make it easy but enjoy that warmth today if you can as things will be turning colder, particularly tomorrow and Saturday. Have a look at the extended weather forecast here.

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Mild temperatures and a good bit of sun on Wednesday

Wednesday, February 7th, 2018 5:10am MST

Thornton is set to enjoy a pretty nice day today. The mercury will rise a good bit higher than normal and other than a touch of wind, it will be a pleasant one.

The day starts off with some fog in a few places but that won’t last long. Once gone, we will be left with mostly sunny skies until the late afternoon when a few more clouds will build.

Some breezy winds will arrive this afternoon but nothing overly strong. Aided by the downslope winds, temperatures will top out in the mid-50s.

Overnight tonight, look for partly cloudy skies above with lows dipping to around 30 degrees.

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Thornton’s Tuesday to offer up typical weather for this time of year

Tuesday, February 6th, 2018 5:54am MST

The little bit of snow we were expecting (hoping for) last night never did materialize as downslope flow kept it to our east. Today we remain dry with conditions pretty much on par with what we expect during the first part of February.

The day starts with a good bit of cloud cover but then we should see some clearing as the morning progresses. Overall look for partly to mostly sunny skies for much of the day. Temperatures start out chilly then we should see a high in the mid-40s. Average high for today’s date is 45 degrees and we should be right there.

Tonight, skies will be seeing some clearing and overnight lows dipping into the low 20s.

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February 4 to February 10: This week in Denver weather history

Monday, February 5th, 2018 5:45pm MST
This week in Denver weather history

February 4 to February 10: This week in Denver weather history

February is generally a relatively calm weather month however just like any other month in Denver, it can and does see its extremes. In looking back at the Denver weather history calendar for the week, there are many entries for damaging wind, some heavy snowfall and extreme cold.

From the National Weather Service:

30-7

In 1985…a cold front on the 29th produced a protracted cold spell as arctic air remained entrenched across metro Denver. While the only daily temperature record set was a low maximum reading of 2 degrees on February 3rd…minimum temperatures plunged well below zero on 9 consecutive days. The coldest readings were 15 degrees below zero on January 31st and 14 degrees below zero on February 5th.

31-8

In 1963…warm weather that began with the strong Chinook winds on the 31st and 1st continued through the 8th. Maximum temperatures through the period ranged from 52 degrees on the 2nd to 76 degrees on the 5th…which was a new record high for that date.

31-12

In 1899…a protracted cold spell lasted almost two weeks. Low temperatures plunged below zero on all days but February 9th with a reading of 6 degrees. The coldest low temperature of 22 degrees below zero on February 6th was a record low for the date. Low temperatures of 20 degrees below zero occurred on both February 11th and 12th… But only the 11th remains as the record minimum for the date. High temperature of only 5 degrees below zero on February 11th was a record low maximum for the date. High temperatures climbed to only zero degrees on both February 2nd and 3rd…but were not records. Intermittent light snow or flurries fell during the period. The most snowfall…2.0 inches…occurred on February 2nd.

1-4

In 2011…a frigid arctic airmass settled into Front Range urban corridor. At Denver International Airport… Overnight low temperatures…from the 1st to the 3rd… Were 13 below zero…17 below zero and zero respectively. The icy temperatures caused pipes to crack and burst following the freeze. In Loveland…firefighters responded to more than a dozen water pipe breaks…most in fire sprinkler systems at businesses…apartments and assisted care facilities. At cu earth science library in Boulder…more than 1000 books and several costumes for an upcoming production were damaged. At the county courts administration building in Jefferson County…a steady stream of water from a crack on the 5th floor… Went unnoticed on the 3rd and flooded all the floors of the administration wing overnight. As a result…much of the office equipment…furniture and carpet sustained water damage. A burst sprinkler line caused minor damage at the Platte Valley Medical Center in Brighton. The icy temperatures forced to closure of several school districts as well.

1-5

In 1985…the most bitter cold spell of the winter season brought sub-zero temperatures to metro Denver. Daily low temperature records were broken at Denver. The usual cold weather problems struck including stalled vehicles…jammed traffic lights…and frozen water and sewer lines. At Stapleton International Airport…the high temperature was only 2 degrees above zero on the 1st…setting a record low maximum for the date. Low temperatures reached 13 below zero on the 1st…12 below on the third…and 14 below on the 5th.

1-6

In 1989…one of the century’s worst doses of winter weather ravaged the entire state. Bitterly frigid weather moved into metro Denver on the 1st as snow buried many sections of the state. In metro Denver where 3 to 6 inches of snow fell…blowing snow and resultant poor visibilities caused a 46-car pile-up on I-25 in the middle of the city on the 4th. During the period…2 to 3 hour delays were common at Stapleton International Airport where snowfall from the storm totaled 4.3 inches and northeast winds gusted to 30 mph on the 1st. Intense cold accompanied the storm. Temperatures in Denver stayed below zero continuously for the best part of 3 days (3rd…4th…5th)…for a total of 69 hours. This is the fourth longest sub-zero period on record. Wind chill temperatures reached 50 degrees below zero. The mercury dipped to 24 degrees below zero on the 5th…setting a record for the date. This was the city’s coldest temperature in over 26 years. Low temperatures dipped below zero on 8 consecutive days (2nd-9th). High temperature of 9 degrees below zero on the 4th was a record low maximum for the date…as was the high of 5 degrees on the 5th. Extensive damage occurred when pipes and water lines froze and broke. Thousands of cars failed to start. On the 3rd…a 57-year-old woman died of hypothermia in an Arvada park. Eighteen high school students were treated for hypothermia after a 2-hour ride through Jefferson County in an unheated bus. At least 2 cases of frostbite were reported; there were undoubtedly many more.

1-9

In 1883…a protracted cold period occurred when low temperatures dipped below zero for 9 consecutive days. Low temperatures ranged from 22 degrees below zero on the 4th to 2 degrees below zero on the 1st and 6th. High temperatures ranged from 10 below zero on the 3rd to 23 on the 9th. Several temperature records were set that still stand today. Record lows of 18 below and 22 below zero occurred on the 3rd and 4th. Record low maximum readings of 2 below and 10 below zero occurred on the 2nd and 3rd. The high of only 10 below zero on the 3rd is the coldest maximum temperature ever recorded in Denver.

2-4

In 2012…a slow moving and powerful storm system brought heavy snow to areas in and near the Front Range Foothills and Palmer Divide…with blizzard conditions over the northeast plains of Colorado. In the Front Range Foothills…the snow piled up to over 4 feet in some areas. Across the Palmer Divide…the combination of snow and gusty winds resulted in road closures with snow drifts ranging from 2 to 5 feet in depth. Northerly winds 15 to 25 mph were common with gusts to 40 mph. Several snowfall records were also set in Denver. At Denver International Airport…12.5 inches of snow feet on the 3rd shattered the previous record of 7.5 inches for the date. It also set a new daily record for the entire month of February. A new 3-day record was also established for Denver. The 3-day storm total from February 2nd to the 4th was 15.9 inches… which broke the previous record of 14.1 inches in 1912. Denver International Airport canceled more than six hundred flights. In addition…snow and blowing snow produced near zero visibilities…forcing officials to close the westbound lanes of Interstate 70…between the Kansas state line and Denver… as well as the eastbound lanes from Denver to Limon. Other road closures included State Highway 86…between Kiowa and I-70. Across the Urban Corridor storm totals included: 22 inches in Broomfield; 21 inches at Lafayette…Louisville and Westminster; 20 inches at Northglenn; 19 inches at the National Weather Service in Boulder…Castle Rock… Centenniel and Parker; 18 inches in Arvada…16.5 inches in Erie… 13.5 inches near Longmont; 11 inches in Lyons and 10 inches in Frederick. Storm totals in the mountains and foothills included: 51 inches at Coal Creek Canyon…45.5 inches… 4.6 miles northeast of Ward; 44.5 inches…3 miles west of Jamestown; 38 inches… 3 miles north of Blackhawk; 37 inches…3 miles west-southwest of Conifer and 4 miles east-northeast of Nederland; 35.5 inches… 3.6 miles west-northwest of Boulder; 34 inches…5.2 miles east-southeast of Aspen Springs; 33 inches near Evergreen…32 inches at Genesee; 31 inches…10.3 miles west of Bellvue and Eldora Mountain Ski Resort; 24 inches at Echo Mountain Ski Resort; 21 inches at Niwot Ridge SNOTEL; and 19 inches at Gross Reservoir. Along the Palmer Divide storm totals included: 26 inches…14 miles east-northeast of Kiowa; 25 inches…10 miles south-southwest of Buckley Air Force Base…and 8 miles southeast of Watkins; 20 inches near Strasburg; 12 inches near Elizabeth.

3-4

In 1906…northeast winds were sustained to 43 mph behind a cold front on the 3rd. The front plunged temperatures from a high of 62 degrees on the 3rd to a low of 24 degrees…which was also the high reading on the 4th. The low temperature on the 4th was only 3 degrees. Snowfall was only 0.6 inch on the 4th.

In 1970…a wind gust to 115 mph was recorded in Boulder at the National Center for Atmospheric Research. Sustained winds of 35 mph with gusts as high as 62 mph were measured in downtown Boulder. Northwest winds gusted to 47 mph at Stapleton International Airport on the 3rd.

3-5

In 1982…a cold surge of arctic air brought light snow and sub-zero temperatures to metro Denver. Temperatures plunged to 6 below zero at midnight on the 3rd and never warmed above zero on the 4th as snow flurries continued. High temperature on the 4th of 1 below zero was a record low maximum. The temperature dipped to a record low of 15 below zero on the 5th.

4

In 1883…the temperature plunged to a low of 22 degrees below zero.

In 1885…a windstorm occurred in the city during the afternoon and early evening. West winds sustained to 64 mph blew down several trees…chimneys…awnings… And sheds. Stronger winds in the foothills blew a train from the track at Georgetown…injuring several passengers.

In 1890…the highest recorded temperature in February… 77 degrees…occurred. This temperature was equaled on February 28…2006.

In 1898…west winds were sustained to 53 mph with gusts to 60 mph.

In 1915…very strong northwest winds whipped downtown Denver nearly all day. There were 13 consecutive hours with maximum sustained velocities ranging from 27 to 44 mph. An extreme velocity to 46 mph was recorded.

In 1952…a northwest wind gust to 48 mph was recorded at Stapleton Airport. Severe winds were reported west and north of Denver.

In 1995…high winds developed in the foothills west and northwest of Denver. A gust to 97 mph was recorded on Squaw Mountain. Winds were clocked to 83 mph at Rollinsville. Wind gusts between 50 and 70 mph were common. North winds gusted to only 31 mph at Stapleton International Airport.

» Click here to read the rest of February 4 to February 10: This week in Denver weather history

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