{"id":23480,"date":"2023-09-20T04:59:43","date_gmt":"2023-09-20T10:59:43","guid":{"rendered":"http:\/\/www.thorntonweather.com\/blog\/?p=23480"},"modified":"2023-09-22T05:11:19","modified_gmt":"2023-09-22T11:11:19","slug":"september-17-to-september-23-this-week-in-denver-weather-history-2","status":"publish","type":"post","link":"https:\/\/www.thorntonweather.com\/blog\/weather-history\/september-17-to-september-23-this-week-in-denver-weather-history-2\/","title":{"rendered":"September 17 to September 23: This week in Denver weather history"},"content":{"rendered":"

\"This<\/a><\/p>\n

The calendar may still say it is summer for a few more days but our look back at this week in Denver weather history shows that Old Man Winter can still make an appearance.<\/p>\n

From the National Weather Service:<\/p>\n

10-18<\/p>\n

In 2018…the high temperature equaled or exceeded 90 degrees for 9 consecutive days; marking the first time such an occurrence has taken place in the month of September. It also brought September of 2018 into a 4-way tie for most 90 degree + days in the month. Previous years included 2017…2005 and 1895. During the streak…4 record high temperatures were either tied or broken…and one record high minimum temperatures was broken.<\/p>\n

15-17<\/p>\n

In 2000\u2026unusually hot weather for so late in the season occurred when temperatures climbed into the 90\u2019s setting daily record maximum temperatures on each of the 3 days. The high temperature was 92 degrees on the 15th and 95 degrees on both the 16th and 17th.<\/p>\n

15-19<\/p>\n

In 1906\u2026rain on 5 consecutive days totaled 1.61 inches. A thunderstorm occurred on the 17th. High temperatures ranged from 48 degrees on the 16th to 65 degrees on the 15th. Low temperatures were in the lower to mid 40\u2019s.<\/p>\n

16-19<\/p>\n

In 1971\u2026a record breaking early fall snow storm caused extensive damage to trees and utility lines. The heavy wet snow occurred with little wind\u2026but caused record breaking cold temperatures for so early in the season. Snowfall totaled 15.6 inches at Stapleton International Airport with most of the snowfall\u202612.0 inches\u2026occurring on the 17th. This was the heaviest first snow of the season. The maximum snow depth on the ground was 13 inches. Record low temperatures were set on three consecutive days: 31 degrees on the 17th\u202623 degrees on the 18th\u2026and 20 degrees on the 19th\u2026which was also a new all-time record minimum for the month at that time. Record low maximum temperatures were set on 4 consecutive days: 48 degrees on the 16th\u202635 degrees on the 17th\u202640 degrees on the 18th\u2026 And 42 degrees on the 19th.<\/p>\n

17<\/p>\n

In 1873\u2026brisk west to northwest winds at different times during the day\u2026generally in sudden gusts\u2026spread a good deal of dust into the city.<\/p>\n

In 1953\u2026strong winds caused thousands of dollars in damage to Boulder. The winds blew for most of the day with great gustiness\u2026and a freak twister was reported during the afternoon. Damage was minor. A thunderstorm wind gust to 40 mph caused some blowing dust at Stapleton Airport.<\/p>\n

In 1992\u2026a tornado touched down briefly near Bennett. No damage was reported.<\/p>\n

In 1993\u2026severe thunderstorms rumbled across northern portions of metro Denver. Hail as large as 1 3\/4 inches in diameter fell in Brighton. Dime size hail damaged several roofs of residences in Lafayette.<\/p>\n

In 2000\u2026for the second day in a row\u2026the high temperature of 95 degrees at Denver International Airport broke three record temperature extremes: the high temperature broke the previous record for the day of 94 degrees set in 1895; it marked the warmest it has been for so late in the season; it also marked the 61st day in the year that the temperature had equaled or exceeded 90 degrees\u2026eclipsing the record equaled the previous day and first set on September 29\u2026 1994.<\/p>\n

18<\/p>\n

In 1901\u2026northeast winds were sustained to 42 mph with gusts to 50 mph behind an apparent cold front.<\/p>\n

In 1948\u2026the low temperature cooled to only 69 degrees\u2026the all-time record high minimum for the month.<\/p>\n

In 1988\u2026a strong cold front blasted metro Denver with high winds. Gusts reached 82 mph in Longmont and 81 mph at Jefferson County Airport near Broomfield where the winds flipped over and destroyed a small airplane. Wind gusts to 60 mph were recorded in Boulder and Wheat Ridge. West wind gusts to 54 mph were clocked at Stapleton International Airport. The strong winds downed trees and power lines and damaged homes and cars. A Longmont man was slightly injured\u2026when a tree fell on top of his car.<\/p>\n

In 1990\u2026a slow moving thunderstorm over southwest metro Denver spawned an ominous looking funnel cloud near the intersection of Sheridan Blvd. and U.S. Highway 285. The funnel cloud nearly touched down a few times before lifting back into the main cloud. No damage was reported. Pea to marble size hail and 3\/4 inch of rain fell over central and northeast Denver. Numerous streets and underpasses became flooded on Denver\u2019s south side when the heavy runoff backed up storm sewers. Thunderstorm rainfall totaled 1.02 inches at Stapleton International Airport.<\/p>\n

In 1993\u2026a severe thunderstorm rolled through southeast metro Denver. Dime size hail was reported in many areas. Straight-line winds from the thunderstorm\u2026measured by a weather spotter at 70 mph\u2026tore the roof off 6 apartments of an apartment complex in Aurora. Heavy rain which accompanied the winds caused major damage to the apartments as well as the contents. Many trees\u2026fences\u2026 And power poles were knocked down by the strong winds. Heavy rain flooded roadways in Denver and Aurora. Thunderstorm rainfall totaled 1.08 inches and north winds gusted to 44 mph at Stapleton International Airport where the visibility was briefly reduced to as low as 1\/4 mile in heavy rain.<\/p>\n

In 1996\u2026a late summer snowstorm struck the northern mountains and Front Range eastern foothills. Golden Gate Canyon received 6 inches of new snow with 5 inches reported at both Nederland and Blackhawk. Thunderstorms produced heavy rain across metro Denver\u2026which was mixed with snow by late evening. Rainfall totaled 0.83 inch at the site of the former Stapleton International Airport and 1.22 inches at Denver International Airport where northwest winds gusted to 39 mph.<\/p>\n

18-19<\/p>\n

In 1955\u2026heavy rains caused flash flooding across portions of metro Denver. Rainfall totaled 1.71 inches at Stapleton Airport.<\/p>\n

19<\/p>\n

In 1955\u2026hail stones to 2 1\/2 inches in diameter were reported north of Denver. The large stones broke many automobile windshields.<\/p>\n

In 1963\u2026hail to 3\/4 inch in diameter fell in Westminster.<\/p>\n

In 1983\u2026an unusually strong cold front roared through metro Denver during the afternoon hours. At Stapleton International Airport\u2026the temperature dropped 51 degrees\u2026 From a sunny 86 degrees to a snowy 35 degrees\u2026in just 7 hours. Strong winds and a wall of blowing dust followed the front. Northeast winds gusting to 36 mph briefly reduced the surface visibility to 1 mile in blowing dust at Stapleton International Airport where only a trace of snow fell later.<\/p>\n

In 1996\u2026high winds gusting to 84 mph were measured at Golden Gate Canyon in the foothills west of Denver. West winds gusted to only 25 mph at Denver International Airport.<\/p>\n

<\/span>20<\/span><\/p>\n

In 1921\u2026an apparent Bora produced northwest winds sustained to 44 mph with gusts to 64 mph.<\/p>\n

In 1955\u2026hail stones 1\/2 to 3\/4 inch in diameter were reported across parts of the city of Denver.<\/p>\n

In 1992\u2026weather observers at Buckley Air National Guard base sighted two tornados southeast of the base. The tornados were short-lived and caused no injuries or damage.<\/p>\n

20-21<\/p>\n

In 1963\u2026heavy rain and hail caused local flooding in southeast Denver. Thunderstorm rainfall was only 0.60 inch at Stapleton Airport on the 20th.<\/p>\n

In 1983\u2026the cold front on the 19th brought an unusually cold air mass into metro Denver for so early in the season. The temperature dipped to a daily record minimum of 28 degrees on both days.<\/p>\n

In 1995\u2026a vigorous late summer storm brought the season\u2019s first heavy snow to portions of metro Denver. Millions of trees were damaged and power lines downed as 4 to 8 inches of heavy wet snow settled on fully leafed trees in the Boulder and Denver areas. Branches snapped and trees split under the weight of heavy snow\u2026downing power lines. Firefighters responded to numerous transformer fires. Around 100 thousand people were left without electricity in Boulder and Denver areas alone. It took over a week to fully restore power to some areas. Insurance claims were estimated to be around 6 million dollars to homes in metro Denver and about 500 thousand dollars in damage to automobiles. It was estimated that about 80 percent of 125 million dollars worth of city owned trees in Denver were damaged. Snowfall totaled 7.4 inches at the site of the former Stapleton International Airport where the greatest depth of snow on the ground was only 4 inches due to melting. Temperature records were set on the 21st when the thermometer dipped to a record low reading of 27 degrees and climbed to a high of only 36 degrees\u2026 Setting a record low maximum for the date. North winds gusted to 29 mph at Denver International Airport on the 20th.<\/p>\n

20-22<\/p>\n

In 1902\u2026a thunderstorm on the 20th\u2026in advance of an apparent cold front\u2026produced rain\u2026hail\u2026and northwest winds to 40 mph with gusts to 48 mph. Widespread rain developed behind the cold front and totaled 3.21 inches from the evening of the 20th through the early afternoon of the 22nd. The 2.70 inches of precipitation recorded from 800 pm on the 20th to 800 pm on the 21st is the greatest 24 hour precipitation ever recorded in the month of September. The temperature dipped from a high of 80 degrees on the 20th to a high of only 51 degrees on the 21st.<\/p>\n

21<\/p>\n

In 1951\u20264.2 inches of snow fell at Stapleton Airport\u2026 Where northeast winds gusted to 27 mph. This was the first snowfall of the season in Denver\u2026marking the end of the second shortest snow-free period on record\u2026109 days\u2026from June 4th through September 20th. A trace of snow fell on June 3rd.<\/p>\n

In 1984\u2026thunderstorm winds gusted to 56 mph at Stapleton Airport.<\/p>\n

In 1992\u2026the only precipitation of the month at Stapleton International Airport\u20260.01 inch of rain\u2026fell from a brief shower around daybreak.
\n21-22 in 1870\u2026strong winds occurred in the foothills and in Boulder and Denver.<\/p>\n

In 1895\u2026rain changed to snow overnight and totaled 11.4 inches in downtown Denver. This was the first snowfall of the season and the second heaviest first snowfall of the season on record. North winds were sustained to 27 mph with gusts to 30 mph on the 21st.<\/p>\n

22<\/p>\n

In 1913\u2026a thunderstorm produced northwest winds sustained to 40 mph with gusts to 44 mph.<\/p>\n

In 1946\u2026a trace of snow fell in downtown Denver. This marked the start of the longest snow season on record\u2026 263 days through June 11\u20261947\u2026when a trace of snow also fell.<\/p>\n

23<\/p>\n

In 1873\u2026north to northwest winds blowing almost a gale spread clouds of dust and sand into the city during the afternoon and evening. From the roof of the weather observer\u2019s building\u2026houses a few hundred yards away were not visible and not even the sky could be seen through the clouds of sand. The wind reached sustained speeds of 35 mph\u2026but only 28 mph was registered for any one hour.<\/p>\n

In 1977\u2026wind gusts from 50 to 80 mph were reported along the foothills. A northwest wind gust to 53 mph was recorded at Stapleton International Airport.<\/p>\n

23-24<\/p>\n

In 2000\u2026the first snowstorm of the season brought heavy snow to areas in and near the foothills. While the heaviest snow fell north of metro Denver\u20266 inches were measured in Boulder\u20264 inches at both Castle Rock and Morrison\u2026but only 0.2 inch at the site of the former Stapleton International Airport where most of the precipitation fell as rain. At Denver International Airport where drizzle and rain fell on the 23rd\u2026 Snowfall during the early morning of the 24th was estimated at 2.1 inches due to melting. The foothills west of Denver received more snow with 10 inches measured at conifer\u20269 inches 11 miles southwest of Morrison\u2026 8 inches atop Crow Hill\u20267 inches at Chief Hosa\u2026and 5 inches at Ralston Reservoir.<\/p>\n","protected":false},"excerpt":{"rendered":"

The calendar may still say it is summer for a few more days but our look back at this week in Denver weather history shows that Old Man Winter can still make an appearance. From the National Weather Service: 10-18 In 2018…the high temperature equaled or exceeded 90 degrees for 9 consecutive days; marking the … Continue reading September 17 to September 23: This week in Denver weather history<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[63],"tags":[81,106,62,441,741],"_links":{"self":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/23480"}],"collection":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/comments?post=23480"}],"version-history":[{"count":1,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/23480\/revisions"}],"predecessor-version":[{"id":23481,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/23480\/revisions\/23481"}],"wp:attachment":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/media?parent=23480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/categories?post=23480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/tags?post=23480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}