As our snowiest month, heavy, wet snows are not at all unusual in March. Certainly we see many of those types of events in our look back at this week in Denver weather history. Also notable are the high wind events including one in 1995 that brought down two houses under construction in Thornton.

From the National Weather Service:

9-19

In 1906…an extended cold and blustery period occurred with light snow totaling 14.4 inches over 11 consecutive days. The greatest amount of snow on a single day was 4.0 inches on the 15th. Only a trace of snow fell on the 12th and 17th. High temperatures were below freezing for the entire period. The coldest were 14 degrees on the 16th and 18 degrees on the 17th. Both readings were record low maximums for the dates. Low temperatures were mostly in the single digits. The coldest were 2 degrees below zero on the 16th and 5 degrees below zero on the 19th. Northeast winds were sustained to 22 mph on the 9th. North winds were sustained to 36 mph on the 10th…32 mph on the 13th…and 22 mph on the 15th.

17-18

In 1923…4.2 inches of snow fell over downtown Denver. Northwest winds were sustained to 45 mph with gusts to 49 on the 17th. Low temperature of zero degrees on the 18th was the lowest of the month that year.

In 1944…heavy snow fell across metro Denver. The storm started as rain on the 17th…but soon turned to snow. Snowfall amounts totaled 8.5 inches in downtown Denver and 11.0 inches at Stapleton Airport. The highest wind recorded during the storm was 23 mph on the 17th.

In 1961…a major winter storm dumped 10.7 inches of snow at Stapleton Airport. Most of the snow…9.7 inches…fell on the 18th. Winds were light.

In 1994…strong winds buffeted metro Denver. West winds gusted to 51 mph at Stapleton International Airport on the 17th. Other significant wind gusts included 85 mph atop squaw mountain south of Idaho Springs…and 82 mph at Rollinsville southwest of Boulder…both on the 18th.

In 1996…a second storm in less than 3 days dumped heavy snow in the mountains and foothills again…but snowfall amounts across metro Denver ranged from only 2 to 4 inches. The heavy snowfall resulted in several traffic accidents along I-25 and I-70…south and west of Denver respectively. The major accidents involved at least 30 cars and resulted in several minor injuries. The accidents closed both highways for a time. Snowfall totals included 13 inches at Evergreen and 10 inches at conifer. Snowfall totaled only 0.7 inch at the site of the former Stapleton International Airport. At Denver International Airport… North winds gusted to 28 mph on the 17th and 39 mph on the 18th.

17-19

In 1933…rain changed to snow on the evening of the 17th and continued through mid-day of the 19th. Snowfall totaled 5.6 inches with 0.83 inch of precipitation in in the city. North winds were sustained to 38 mph with gusts to 46 mph on the 18th and to 30 mph with gusts to 43 mph on the 19th.

In 2003…one of the worst blizzards since historic records began in 1872 struck metro Denver with a vengeance. Heavy wet snow accumulating to around 3 feet in the city and to more than 7 feet in the foothills brought transportation to a near standstill. North winds sustained to 30 mph with gusts as high as 41 mph produced drifts to 6 feet in the city. The estimated cost of property damage alone…not including large commercial buildings…was 93 million dollars… Making it the costliest snowstorm ever. Mayor Wellington Webb of Denver said…”this is the storm of the century…a backbreaker…a record breaker…a roof breaker.” two people died in Aurora from heart attacks after shoveling the heavy wet snow. The national guard sent 40 soldiers and 20 heavy duty vehicles to rescue stranded travelers along I-70 east of gun club road. The heavy wet snow caused roofs of homes and businesses to collapse. The snow also downed trees…branches…and power lines. Two people were injured when the roofs of their homes collapsed. In Denver alone…at least 258 structures were damaged. In Arvada…a roof collapse at west gate stables killed a horse. Up to 135 thousand people lost power during the storm…and it took several days for power to be restored in some areas. Denver International Airport was closed…stranding about 4000 travelers. The weight of the heavy snow caused a 40-foot gash in a portion of the tent roof…forcing the evacuation of that section of the main terminal building. Avalanches in the mountains and foothills closed many roads…including I-70…stranding hundreds of skiers and travelers. Along I-70…an avalanche released by the Colorado Department of Transportation…blocked the interstate in both directions for several hours. Several residences between Bakerville and Silver Plume were evacuated because of the high avalanche danger. At Eldora Ski Area…270 skiers were stranded when an avalanche closed the main access road. After the storm ended…a military helicopter had to ferry food to the resort until the road could be cleared. The heavy snow trapped thousands of residents in their foothills homes in Jefferson County for several days. Two homes burned to the ground when fire crews could not reach the residences. Some schools remained closed well into the following week. The storm officially dumped 31.8 inches of snow at the site of the former Stapleton International Airport…the most snowfall from a single storm since the all-time record snowfall of 37.5 inches on December 4-5…1913. The storm made March 2003 the snowiest March on record…the 4th snowiest month on record… And the 5th wettest March on record. The 22.9 inches of snow on the 18th into the 19th was the greatest 24 hour snowfall ever recorded in the city during the month of March. The storm was also a drought-buster…breaking 19 consecutive months of below normal precipitation in the city. Snowfall across metro Denver ranged from 2 feet to more than 3 feet. The highest amounts included: 40 inches in Aurora…38 inches in centennial and 6 miles east of Parker…37 inches at Buckley AFB…35 inches in southwest Denver…34 inches in Louisville… 32 inches in Arvada…31 inches in Broomfield and Westminster… And 22.5 inches in Boulder. In the foothills…snowfall ranged from 3 feet to more than 7 feet. Some of the most impressive storm totals included: 87.5 inches atop Fritz Peak and in Rollinsville…83 inches at Cabin Creek…74 inches near Bergen Park…73 inches northwest of Evergreen…72 inches in Coal Creek Canyon…70 inches at Georgetown…63 inches near Jamestown…60 inches near Blackhawk…55 inches at Eldora Ski Area…54 inches 8 miles west of Sedalia…and 46.6 inches at Ken Caryl Ranch. The storm was the result of a very moist…intense slow moving pacific system which tracked across the four corners and into southeastern Colorado…which allowed deep easterly upslope flow to form along the Front Range.

18

In 1883…0.3 inch of snow fell in downtown Denver. This was the only measurable snowfall of the month.

In 1903…rain changed to sleet and then to snow…which became heavy. Post-frontal snowfall totaled 7.0 inches over the city. North winds were sustained to 51 mph with gusts as high as 60 mph.

In 1905…northwest winds were sustained to 42 mph.

In 1914…northeast winds were sustained to 46 mph with gusts to 56 mph behind a strong cold front. Snowfall was 3.4 inches over the city…but most of the snow melted as it fell. The estimated amount of melted snow was 8.1 inches.

In 1920…a terrific windstorm occurred along the eastern foothills. Two deaths were attributed to the storm and some damage occurred. Both Denver and Boulder were affected by the strong winds. West winds were sustained to 51 mph with gusts as high as 66 mph in downtown Denver. The strong winds did considerable damage to property… Wires…plate glass windows…and indirectly loss by fire. The wind caused the death of one young girl by toppling the side of a brick building on her as she was standing on a corner waiting for a car. The wind was also responsible for several severe auto accidents due to blowing debris into the streets and blowing dust and dirt into the eyes of drivers.

In 1954…west winds at sustained speeds of 40 mph and gusts as high as 56 mph produced some blowing dust at Stapleton Airport.

In 1979…heavy snow totaled 4 to 12 inches along the Front Range from Denver north. I-25 was closed for a brief time between Denver and Cheyenne. New snowfall totaled 4.3 inches at Stapleton International Airport where north winds gusted to 29 mph.

In 1998…a major winter storm dumped heavy snow over areas west from I-25 to the continental divide as strong upslope conditions developed. Two to 3 1/2 feet of snow fell in the foothills with 1 to 2 feet reported in west metro Denver. Snowfall totals included: 38 inches at Silver Spruce Ranch…2 miles south of Ward; 35 inches at Aspen Springs; 33 inches near Blackhawk; 30 inches at Eldora; 29 inches in Coal Creek Canyon; 27 inches at Conifer… Chief Hosa…and Nederland; 25 inches at Rollinsville and Gross Reservoir; 21 inches at Evergreen; and 15 to 19 inches at Broomfield…Lakewood…and Table Mesa in Boulder. Elsewhere across metro Denver…snowfall ranged from 8 to 14 inches. Snowfall totaled only 7.9 inches at the site of the former Stapleton International Airport. East winds gusted to 31 mph at Denver International Airport.

Continue reading March 18 to March 24 – This Week in Denver Weather History →

March is usually a month of transition in Denver as winter winds down and spring begins to assert itself. This leads to many different types of weather events from high winds, to monstrous snowstorms and even tornadoes. Our look back at this week in Denver weather history shows that all of these can occur during this time of the year.

From the National Weather Service:

9-11

In 1927…rain changed to heavy snow behind a cold front and totaled 7.7 inches over downtown Denver. North winds were sustained to 37 mph with an extreme velocity to 38 mph on the 11th.

In 1955…a strong windstorm raked the eastern foothills. A wind gust to 95 mph was recorded at Rocky Flats with a gust to 60 mph measured at Valmont. Damage in Boulder totaled 10 thousand dollars. Minor injuries also occurred. The strong winds were associated with a vigorous cold front that produced northwest winds at 40 mph with gusts as high as 52 mph at Stapleton Airport where the visibility was briefly reduced to 3/4 mile in blowing dust on the 10th.

In 1968…5.5 inches of snow fell at Stapleton International Airport where northeast winds gusted to 24 mph on the 10th.

9-19

In 1906…an extended cold and blustery period occurred with light snow totaling 14.4 inches over 11 consecutive days. The greatest amount of snow on a single day was 4.0 inches on the 15th. Only a trace of snow fell on the 12th and 17th. High temperatures were below freezing for the entire period. The coldest were 14 degrees on the 16th and 18 degrees on the 17th. Both readings were record low maximums for the dates. Low temperatures were mostly in the single digits. The coldest were 2 degrees below zero on the 16th and 5 degrees below zero on the 19th. Northeast winds were sustained to 22 mph on the 9th. North winds were sustained to 36 mph on the 10th…32 mph on the 13th…and 22 mph on the 15th.

10-11

In 1886…snowfall of 3.5 inches was measured in downtown Denver. Apparent post-frontal north winds were sustained to 43 mph on the 11th.

In 1977…a major blizzard struck metro Denver. Snowfall totaled 8.0 inches at Stapleton International Airport where north winds at speeds of 30 to 40 mph with gusts to 60 mph frequently reduced visibilities in blowing snow to 1/4 mile or less. Most of the snow…7.7 inches…fell on the 10th. The snow ended by daybreak on the 11th…but strong north winds persisted through the day.

In 1988…a late winter storm produced heavy snow and wind… Mainly north of Denver. Wind gusts reached 62 mph at Keenesburg and produced a lot of blowing snow…closing schools in southwest weld County. The storm closed I-70 east of Denver. Only 1.1 inch of snow fell at Stapleton International Airport…but north winds gusted to 39 mph.

10-12

In 1924…snowfall was heavy and totaled 9.9 inches over downtown Denver. North winds were sustained to 18 mph on the 11th.

In 2001…heavy snow fell over northeast Colorado and metro Denver when a combination of upslope winds and convective snow bands formed over the area. Storm totals included: 11 inches at the Eldora Ski Resort; 10 inches at Genesee; 8 inches at Elizabeth…atop Lookout Mountain…near Sedalia… And at Strasburg; 7 inches near Castle Rock and Evergreen; and 6 inches in Aurora…atop Crow Hill…and in Parker. Elsewhere across metro Denver…snowfall ranged from 2 to 5 inches with 3.9 inches at the site of the former Stapleton International Airport. North winds gusted to 28 mph at Denver International Airport on the 10th.

Continue reading March 11 to March 17 – This Week in Denver Weather History →