NOUS45 KBOU 090859 PNSBOU COZ030>051-092300- Public Information Statement National Weather Service Denver/Boulder CO 259 AM MDT THU MAY 9 2024 ...Today in metro Denver weather history... 8-9 In 1957...from the 8th to the 9th...intense heavy rain caused flash flooding on Toll Gate Creek in Aurora where 3 people were killed in a car. Up to 4 inches of rain fell in 5 hours in the Toll Gate Creek basin. The rain also caused flash flooding on Sand Creek in Aurora and Denver. Rainfall totaled 3.29 inches at Stapleton Airport with most of the rain...2.34 inches... occurring on the 9th. 8-10 In 1979...from the 8th to the 10th...4.3 inches of snow fell at Stapleton International Airport where northwest winds gusted to 30 mph on the 8th. Most of the snowfall... 2.3 inches...occurred on the 9th. High temperature of only 35 degrees on the 9th equaled the record low maximum for the date. 9 In 1875...a heavy windstorm swept across the city for most of the day. West-northwest winds averaged a sustained speed of 31 mph between 6:00 AM and 3:00 PM. The peak wind was sustained to 45 mph at 9:50 AM. In 1918...post-frontal winds were sustained to 40 mph with gusts as high as 43 mph. Only a trace of rain fell. In 1941...a tornado was noted at 2:20 PM to the northeast of downtown and was followed by another similar shaped cloud or dust roll estimated 3 miles behind. Thick dust followed with heavy gusts of wind. The temperature fell 15 degrees in 10 minutes following the twister. The mild tornado did little damage except to unprotected frame structures. Winds were sustained to 50 mph with the passing of the tornado at Stapleton Airport. It was visible to observers for 10 minutes and was lost from sight as it traveled east into huge rolls of dust. Hail and rain followed with a few hailstones as large as 1/2 inch in diameter downtown. No damage was reported from the hail. Thunderstorm winds sustained to 31 mph produced blowing dust downtown. Precipitation was only 0.07 inch. In 1983...streams swollen by recent rain and snowmelt caused an earthen dam to collapse...washing out portions of State Highway 67 near Deckers in southern Douglas county. In 1992...three boys...ages 11...12...and 16...were struck by lightning while taking cover under a large tree during a thunderstorm in Jefferson County...just 7 miles northwest of Denver. The three were seriously injured. 9-10 In 1889...from the 9th to the 10th...heavy rainfall totaled 2.15 inches in downtown Denver. The cold rain was mixed with snow at times overnight. Temperatures on the 10th ranged from a high of 38 degrees to a low of 32 degrees with north winds sustained to 22 mph. In 2003...a late spring snowstorm hammered the mountains... eastern foothills...and urban corridor. The heaviest snowfall occurred north of Interstate 70. The heavy wet snow caused damage to trees throughout metro Denver and downed power lines. About 40 thousand people along the urban corridor were without power. Storm total snowfall amounts included: 11.5 inches in Louisville... 8 inches in Boulder and Broomfield; 7 inches in Thornton...Broomfield...at Denver International Airport... and at the site of the former Stapleton International Airport; and 6 inches 4 miles east of Denver. Snowfall ranged from 4 to 9 inches across extreme southern Weld County. In the foothills...15 inches of snow fell near Jamestown...9 inches at Rollinsville and Rawah...with 8 inches at Chief Hosa and atop Lookout Mountain. The snow was accompanied by thunder on the afternoon of the 9th at Denver International Airport where west winds gusted to 25 mph on the 9th and north winds gusted to 22 mph on the 10th. In 2015...from the 9th to the 10th...a strong storm system brought heavy snow to areas in and around Denver. Moderate to heavy rain showers transitioned over to snow by early in the evening on the 9th. Heavy wet snow overnight caused many trees to break under the pressure of the sudden weight. Tree damage ranged from minor to significant...with old growth trees losing large limbs and new trees sustaining fatal damage. Power outages affected about 43350 Xcel Energy customers in metro Denver. The Intermountain Rural Electric Association also reported about 1000 power outages in the Strasburg areas. In the high country...CDOT shut down Interstate 70 between the Eisenhower Tunnel and Silverthorne due to multiple crashes. $$