Larimer County Below 6000 Feet/Northwest Weld County Severe Watches & Warnings NOAA Weather Radio

Public Information Statement
Statement as of 2:59 am MDT on April 23, 2014

...Today in Metro Denver weather history...

20-23 in 1989...unusually warm weather resulted in several daily temperature records being broken in Denver. The high temperature of 89 degrees on the 21st exceeded the record maximum for the month at that time. Daily record high temperatures were either exceeded or equaled with 83 degrees on the 20th...88 degrees on the 22nd...and 85 degrees on the 23rd. The low temperature of 55 degrees on the 22nd equaled the record high minimum for the date. 21-23 in 1999...a Spring snowstorm dumped heavy snowfall over Metro Denver and in the foothills. Nearly 3 feet of snow fell in the foothills with over a foot in the city. The heavy wet snow downed power lines in Douglas and Elbert counties. Scattered outages were reported at Parker...Franktown... Sedalia...and Castle Rock. Some residents were without electricity for as long as 20 hours. The inclement weather was blamed...at least in part...for several traffic accidents along the I-25 corridor between Denver and Castle Rock. Snowfall totals included: 32 inches at Idaho springs; 31 inches on crowhill; 29 inches near evergreen; 26 inches at chief hosa and Coal Creek canyon; 25 inches at bailey; 24 inches at Floyd hill; 23 inches at Conifer...Genesee...Golden Gate Canyon...north Turkey Creek...and Pine junction; 13 inches at Broomfield and near sedalia; 12 inches in boulder; 11 inches at Louisville and parker; and 9 inches at the site of the former Stapleton International Airport. In 2004...heavy snow fell across Metro Denver...when low level upslope conditions developed against the foothills and Palmer Divide. Snowfall totals included: 18 inches in the foothills southwest of Boulder...17 inches at intercanyon and near Conifer...10 inches near Blackhawk and Parker...9 inches at Castle Rock and near Sedalia...7 inches in Centennial... Littleton...and near Lone Tree. Elsewhere across Metro Denver...snowfall generally ranged from 2 to 5 inches. Snowfall was 4.7 inches at Denver Stapleton. Northwest winds gusted to 35 mph at Denver International Airport on the 21st. 22-23 in 1885...the worst snow storm since station records began in 1872 dumped a total of 24.0 inches of snowfall on the city. The 23.0 inches of snow recorded on the 22nd and 23rd was the greatest 24-hour snowfall ever recorded during the month of April. Streets were impassable...roofs caved in... Telegraph and telephone wires were downed...railroads were blocked and trains delayed...and most business came to a complete standstill. Estimated losses were reported to 50 thousand dollars. The total snowfall was partly estimated due to melting. Precipitation from the storm totaled 2.79 inches. In 1915...Post-frontal rain during the day and overnight totaled 2.00 inches. Most of the rain fell on the 22nd. In 1945...6.7 inches of snow fell over downtown Denver. This was the third major snow in a little over 3 weeks...which made this month the 4th snowiest on record. Northeast winds were sustained to 25 mph and light hail fell on the 22nd. In 2013...a Spring storm brought heavy snow to the mountains... with period of moderate to heavy snow to portions of the Front Range foothills and urban corridor. In the mountains and foothills...storm totals included: 18 inches at Niwot Ridge snotel; 16.5 inches near ward; 13 inches at Arapahoe basin and Roach snotel...12 inches near blackhawk; 11.5 inches near nederland; 11 inches near Allenspark and at Loveland ski area; 10 inches near Idaho Springs and pinecliffe; with 9.5 inches and near Silverthorne. Along the urban corridor storm totals included: 7.5 inches near morrison; 7 inches at the National Weather Service office in Boulder and niwot; 6.5 inches near Arapahoe Park and superior; with 6 inches at Lafayette and Lakewood. At Denver International Airport...4.7 inches of new snowfall was observed. 22-24 in 2010...a potent Spring storm brought heavy...wet snow to areas in and near the Front Range foothills and widespread rainfall across the adjacent plains. In the Front Range foothills and north-central mountains east of the Continental Divide...storm totals ranged from 15 to 30 inches. Storm totals included: 29.5 inches...3 miles southeast of pinecliffe; 27 inches...8 miles northeast of four corners; 23 inches at Willow creek; 22.5 inches... 13 miles northwest of golden; 21 inches at never summer; 17 inches at Eldorado springs; 16.5 inches...3 miles west of Jamestown. Denver International Airport reported just a trace of snowfall...but measured 2.01 inches of rainfall for the duration of the storm. In addition...a peak wind gust to 54 mph from the northwest was observed at the Airport on the 23rd 23 in 1889...north winds were sustained to 48 mph. In 1913...northeast winds were sustained to 46 mph with gusts to 60 mph behind a dry cold front. In 1914...a thunderstorm produced considerable hail and 0.29 inch of rain. West winds were sustained to 42 mph with gusts to 48 mph. In 1942...hail of unknown size fell over the city. In 1958...a funnel cloud was sighted for 20 minutes...15 miles southeast of Stapleton Airport. The Funnel formed in advance of a thunderstorm and hung about a thousand feet below the base of the cloud...but remained aloft. Later in the day...3.6 inches of snow fell at Stapleton Airport. In 2002...persistent dry conditions in the foothills contributed to the first large Forest fire of the season near Bailey. Very dry and windy conditions allowed the fire...initially started by a careless smoker...to grow into a 2400-acre blaze before it could be contained. Fortunately...no significant damage occurred to homes or other property in the area. In 2006...severe thunderstorms produced large hail across Metro Denver. Hail as large as 1.25 inches in diameter fell in south Denver with hail to 0.88 inch across the rest of the city. Hail to 1.00 inch in diameter was reported near Morrison...in South Lakewood...and in Aurora near Cherry Creek. Hail to 0.88 inch was measured in Golden with 0.75 inch hail in East Lakewood. 23-24 in 1883...snowfall totaled 7.6 inches in downtown Denver. In 1904...a thunderstorm produced hail during the late evening of the 23rd. Apparent Post-frontal rain changed to snow during the early morning of the 24th...but totaled only 2.0 inches. Precipitation consisting of rain...melted hail...and snow totaled 0.60 inch. Northeast winds were sustained to 41 mph with gusts as high as 52 mph on the 24th. In 1905...rain changed to snow and totaled 8.0 inches. Much of the snow melted as it fell with only 2.5 inches measured on the ground. Precipitation totaled 1.88 inches. Northeast winds were sustained to 20 mph on the 23rd. In 1942...the South Platte river reached flood conditions in the city. As many as 15 thousand residents were warned to evacuate their homes temporarily. Two lives were lost in the city. Four bridges were washed out by the flood waters and other bridges were endangered. The damage was generally limited to bridges that were in poor condition. However...the flood waters did not overflow their channel banks within the city limits. In 1980...heavy rain began in the eastern foothills on the night of the 23rd and turned to heavy wet snow on the 24th. Up to a foot and a half of snow fell in the foothills west of Denver. At Stapleton International Airport precipitation totaled 1.58 inches...but only 3.7 inches of snow fell from the storm. East winds gusted to 24 mph. In 1997...locations in and near the foothills received the greatest snow of the year as a winter-like storm system moved into Metro Denver. East to southeast winds at speeds of 15 to 35 mph were common with even stronger gusts above 9 thousand feet. Snow fell at a rate of 2 to 3 inches an hour as deep upslope combined with a moist and unstable air mass. The snow began in the foothills above 7500 feet during the evening of the 23rd. By sunrise the snow level had dropped to 5000 feet. The hardest hit areas extended from I-25 into the foothills. Snowfall totals in the foothills ranged from 1 1/2 to over 3 1/2 feet. In the city...snowfall ranged from 8 to 18 inches. Some snowfall amounts included: 36 inches at Coal Creek canyon; 31 inches at Nederland and wondervu; 20 to 24 inches near Blackhawk... at Echo Lake...and north Turkey Creek canyon; 15 to 19 inches at Boulder...Central City...Conifer...Evergreen...Georgetown... and louisville; 8 to 14 inches in Arvada...Broomfield... Westminster...Wheat Ridge...Castle Rock...and ken caryl ranch. Only 2.3 inches of snow fell at the site of the former Stapleton International Airport on the 24th. East winds gusted to 36 mph at Denver International Airport on the 24th. In 2003...a strong and deep northerly flow circulating around a closed upper low pressure center allowed heavy snow to fall in the mountains and eastern foothills. Snowfall totaled 14 inches in Idaho Springs. Rain was mixed with snow and thunder across Metro Denver. Snowfall was only 0.9 inch overnight at the site of the former Stapleton International Airport. Precipitation totaled 1.34 inches at Denver International Airport...where northwest winds gusted to 55 mph on the 23rd. In 2007...a storm system intensified over southeast Colorado... allowing for heavy snow and rain to develop over much of north-central and northeast Colorado. Severe thunderstorms preceded the storm system on the 23rd...affecting the urban corridor. Nickel size hail was reported in Boulder and a small landspout touched down near Byers. On the 24th...heavy snow fell in the foothills west of Denver and Boulder...where storm totals ranged from 1 to 2 feet. Heavy snow also occurred along the Palmer Divide...with storm totals of 10 to 16 inches. Elsewhere...a steady moderate to heavy rainfall was reported. Denver International Airport measured 2.09 inches of rainfall...which shattered the previous 24-hr record of 1.29 inches for the 24th of April. The heavy wet snow caused several power outages. In some instances it took several days to restore power. Several Road closures were reported...including interstates 25 and 70. A jacknifed semi-trailer backed up traffic for nearly 20 miles...on southbound I-25...between Denver and Colorado Springs. In addition...a 50-ton Boulder blocked the southbound Lane of State Highway 285...near Parmalee Gulch. Crews had to use explosives to break up the Boulder and clear the debris. Stranded buses and impassable roadways also forced several school closures. 23-25 in 1935...heavy wet snow fell across Metro Denver. The storm started as rain on the 23rd and changed to snow early on the morning of the 24th. There was continuous precipitation for a period of 48 hours. Snowfall totaled 19.0 inches over the city and 20.0 inches at Denver Municipal Airport. However... due to warm temperatures in the 30's...much of the snow melted as it fell and did not seriously disrupt traffic. The greatest snow accumulation on the ground downtown was 12 inches...but it quickly melted. The highest sustained wind speed recorded during the storm was 28 mph from the north on the 23rd. The storm contained 3.16 inches of moisture.