Public Information Statement
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
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379 NOUS45 KBOU 040859 PNSBOU COZ030>051-042300- Public Information Statement National Weather Service Denver/Boulder CO 259 AM MDT TUE JUN 4 2024 ...Today in metro Denver weather history... 1-4 In 1977...unusually warm weather for this early in June resulted in 3 maximum temperature records being equaled at the time: 88 degrees on the 1st...90 degrees on the 2nd... and 93 degrees on the 4th. Maximum of 91 degrees on the 3rd was not a record. 2-4 In 1989...from the 2nd to the 4th...heavy rain drenched metro Denver with the greatest amounts recorded on the 3rd. Total rainfall ranged from 1 1/2 to 3 inches. Roads were washed out in Boulder County...and flooded basements caused water damage to houses in the Gunbarrel section of Boulder. In suburban Denver...heavy rain caused minor flooding along Lena Gulch in Jefferson County where two mobile home parks were evacuated. Rainfall totaled 1.66 inches at Stapleton International Airport. 2-7 In 1921...heavy rainfall for nearly a week...from the 2nd to the 7th...on top of streams already swollen by mountain snowmelt...produced widespread flooding over the South Platte River basin...including the tributaries through the canyons to the west and southwest of Denver. Heavy rainfall over the 6-day period totaled 3.36 inches in Boulder...4.98 inches in Morrison...4.27 inches in Castle Rock...and 2.94 inches in the City of Denver. Rainfall amounts in the foothills were estimated between 3 and 6 inches. The narrow-gage tracks of the Colorado and Southern Railroad were destroyed in the Platte canyon. From the mouth of the canyon through the city to near Brighton... the river spread from 1/2 to nearly 1 1/2 miles wide... flooding farm and pasture land and destroying or damaging many bridges. In the city...many businesses along with as many as 500 homes were inundated...forcing their evacuation. Bridges were swept away. The high waters flooded the rail yards and stock yards in lower downtown...closing three adjacent packing houses. The heavy rains also caused flooding on Boulder Creek in Boulder on the 6th. 3-4 In 1904...a thunderstorm during the early morning of the 3rd turned into widespread general rain...which continued into the early afternoon of the 4th. Rainfall totaled 2.04 inches. 4 In 1878...a "waterspout" or cloudburst of rain was sighted up the South Platte Canyon at around noon. The resulting high waters on the South Platte River slightly damaged a railroad bridge in the city. In 1937...a trace of snow fell in downtown Denver where rainfall totaled 0.25 inch. Minimum temperature of 34 degrees was a record low for the date. Northeast winds were sustained to 22 mph. In 1951...the start of the second shortest snow-free period on record...109 days...occurred with the last snow of the season...a trace...on the 3rd. The first snow of the next season occurred on September 21st when 4.2 inches of snow fell at Stapleton Airport. In 1954...a microburst produced brief sustained winds of 40 mph with gusts as high as 64 mph at Stapleton Airport. In 1956...the failure of the Georgetown Dam caused downstream flooding on Clear Creek at Idaho Springs and Golden. In 1976...funnel clouds were sighted near Brighton...Erie...and Dacono...all north of Denver. A tornado touched down briefly 1 1/2 miles east of Lafayette. Another tornado touched down briefly at Hyland Hills Golf Course in Westminster. No damage was reported. In 1983...severe thunderstorms during the afternoon produced 3/4 inch hail in south Denver...golf ball size hail 5 miles west of Parker...1 1/4 inch hail in Littleton...1 1/2 inch hail in south Aurora. In 2001...hail as large as 1 inch in diameter fell 17 miles north of Bennett in Adams County. In 2005...snow was mixed with rain for nearly an hour at Denver International Airport during mid to late morning. The temperature at the time was 45 degrees. Precipitation totaled 0.36 inch for the day. Northwest winds gusted to 37 mph. In 2008...a severe thunderstorm produced large hail...up to 1 3/4 inches in diameter in Arvada...a northwest suburb of Denver. Several vehicles were damaged. In addition...a severe thunderstorms produced hail to 1 inch in diameter... 10 miles northeast of Manila...east of Denver International Airport. In 2015...severe thunderstorms broke out across Boulder... Denver...Elbert...Jefferson and southern Larimer Counties. Two large and long lived tornadoes developed near Berthoud and near Simla. The tornado that occurred along the Boulder and Larimer county line. It first touched about 3 miles south of Berthoud...and then tracked to the west/northwest and lifted about 6 miles southwest of Berthoud. The majority of the damage was EF1...with some areas of EF2... and a few small areas of EF3. At least 25 homes between Longmont and Berthoud were damaged; three of them destroyed. No injuries were reported as the winds tore apart homes and rolled vehicles. The EF3 rating is defined as maximum winds estimated at 135 to 140 mph. The path length was 6 miles long with a width of one quarter mile at times. Large hail from quarter to tennis tennis ball size was observed. The largest hail occurred in northeast Boulder County. The hail damaged cars and homes; breaking windows and windshields. In addition... numerous roads were closed along the Larimer and Boulder county line due to flash flooding. Just west of Berthoud... 3.47 inches of rain had fallen. At Denver International Airport...only 0.01 inches of rainfall was recorded... with a peak wind gust to 35 mph from the northeast. In 2020...severe thunderstorms produced intense wind gusts across parts of Adams and Denver counties. A peak wind gust of 64 mph was observed near Bennett...with a gust to 58 mph observed at Denver International Airport. 4-5 In 1965...lightning and an 18-hour rain storm...from the 4th to the 5th...damaged streets and roads and telephone and power lines across metro Denver. Precipitation totaled 2.77 inches at Stapleton International Airport where the visibility was reduced to 3 miles at times from pre-frontal thunderstorms and heavy upslope rains. In 1998...from the 4th to the 5th...a late season snow storm struck the Front Range foothills. Up to 5 inches of snow fell in Coal Creek Canyon. Light snow also fell over western sections of metro Denver and briefly at Denver International Airport. Snow covered the grass at the Denver Federal Center in Lakewood before melting around mid-morning on the 5th. No snow fell at the site of the former Stapleton International Airport. Several temperature records were set. High temperatures of 47 degrees on the 4th and 49 degrees on the 5th were record low maximums for their respective dates. Minimum temperature of 34 degrees on both the 5th and 6th were record lows for those dates. $$