Category Archives: Weather History

News and related items pertaining to national, Colorado, Denver and Thornton weather.

September 27 to October 3 – This week in Denver weather history

September 27 to October 3 - This week in Denver weather history
September 27 to October 3 - This week in Denver weather history

With the end of summer and the arrival of fall, looking back at Denver weather history we start to see more mentions of snow.  It is of course not the only notable weather event this time of year.  We still have received severe thunderstorms, damaging winds, and 90 degree plus heat.

From the National Weather Service:

From the 25th to the 27th:

in 1996…an early season snowstorm brought heavy snow to the Front Range eastern foothills.  Snowfall totals included:  8 to 12 inches around Conifer…7 inches on Floyd Hill…and 6 inches at both bailey and Chief Hosa. Snowfall totaled only 4.7 inches at the site of the former Stapleton International Airport.  This was the first measurable snow of the season.  After the passage of a strong cold front…north winds gusted to 38 mph at Denver International Airport on the 25th.

From the 26th to the 28th: 

In 1936…the heaviest snowfall ever recorded in September and the heaviest snowfall ever recorded so early in the season dumped a total of 16.5 inches of snow on downtown Denver and 21.3 inches at Denver municipal airport.  The 15.0 inches of snow measured from 6:00 pm on the 27th to 6:00 pm on the 28th is the greatest 24 hour snowfall ever recorded in September.  This was the first snow of the season.  The snow was intermittent through the 26th…but continuous from early afternoon on the 27th to around midnight on the 28th…except for a period of rain during the afternoon of the 28th which contributed to a loss of depth on the ground.  The greatest snow depth on the ground downtown was 13 inches with 8 inches at Denver municipal airport.  There were no high winds with the storm and traffic was interrupted for only a short period.  The storm produced property damage estimated at 7 million dollars.  With trees and shrubs in full foliage…the leaves caught and held the heavy water-laden snow…until the branches snapped from the weight.  More than 3000 workmen were called to remove the debris and snow from the city.  The city firemen who were off duty…as well as all the reserves… Were asked to report to their stations.  All schools in the city remained open…but attendance was only 50 percent of normal.  Grade school students were sent home at noon on the 28th.  The early storm caught stockmen with many cattle still in higher ranges.  Warm weather followed the snow…which had all melted by the end of the month…except for a few inches in sheltered places.

On the 27th:

In 1877…smoke from heavy forest fires in the mountains spread over the city on upper wind currents.
 
In 1935…the first snow of the season was 2.8 inches in downtown Denver.  The low temperature dipped to 31 degrees for the first freeze of the season.

Continue reading September 27 to October 3 – This week in Denver weather history

May 17 – May 23 – This week in Denver weather history

May 17 - May 23 - This week in Denver weather history
May 17 - May 23 - This week in Denver weather history

As we move further into the severe weather season, we begin to see that transition in our look back at Denver weather history.  There are many more mentions of lightning, wildfires, tornadoes, hail and other season weather conditions.

14-18

In 1996…a period of unusually warm weather resulted in 4 record maximum temperatures in 5 days.  The record high temperatures were 87 degrees on the 14th…89 degrees on the 15th…and 93 degrees on both the 16th and 18th.  The temperature climbed to only 81 degrees on the 17th which was not a record.

16-17

In 1981…a heavy rain storm dumped 1 to 2 1/2 inches of rain across metro Denver.  Rainfall totaled 1.27 inches at Stapleton International Airport where north winds gusted to 38 mph on 17th.
 
In 1983…a very strong late spring storm dumped heavy snow over the Front Range.  Strong winds with the storm produced blizzard conditions at times.  Sustained winds were 20 to 40 mph with a peak gust to 55 mph at Stapleton International Airport.  The foothills received 1 to 2 feet of snow with 4 to 12 inches along the foothills.  Howling winds whipped the snow into drifts several feet deep…closing schools and highways.  Stapleton International Airport was forced to reduce flight operations…closing 2 of 4 runways and stranding hundreds of travelers.  Most of the damage and inconvenience caused by the storm was in power outages… Which occurred when wind and heavy wet snow caused hundreds of power poles to snap and topple.  About 20 square miles of Denver were blacked out.  Precipitation from the storm totaled 1 to 3 inches.  At Stapleton International Airport… Snowfall totaled 7.1 inches with a maximum snow depth on the ground of only 2 inches due to melting.  The high temperature of 40 degrees on the 17th was a record low maximum for the date.  Due to the heavy moisture content of the storm…widespread street flooding occurred on the 18th when much of the snow melted under the warm May sun and temperatures climbed to a high of 57 degrees.
 
In 1995…significant moisture and upslope flow caused flooding across metro Denver.  Moderate to heavy rains… Which began on the evening of the 16th…developed in the foothills and spread eastward over metro Denver throughout the night.  The heavy rains brought many creeks and small streams to bankfull or slightly over.  Locations along the foothills received between 3 and 4 inches of rainfall from the storm.  Boulder received 3.60 inches of rainfall for the 24-hour period…causing minor street flooding near small streams.  To the northwest of Boulder…a bridge which crossed Fourmile Creek was washed out.  Numerous rock and mudslides occurred in foothills canyons…closing portions of U.S. Highways 6 and 40 and State Highway 119 for a few hours at a time.  Rocks were piled 6 feet deep on a stretch of State Highway 119 along with Boulders as large as cars on U.S. Highway 6.  A parking lot near a creek in Golden caved in leaving a hole the size of an 18-wheeler.  Rushing water washed out a 50-foot stretch of a road in Westminster. Rainfall totaled 1.75 inches at Denver International Airport…but only 1.42 inches at the site of the former Stapleton International Airport.

Continue reading May 17 – May 23 – This week in Denver weather history

A look at Super Bowl weather history and some interesting tornado statistics for it

The biggest sporting event of the year is of course the Super Bowl and no doubt this year’s matchup between the Pittsburgh Steelers and the Arizona Cardinals is sure to be no different.  Super Bowl XLIII will be held in Tampa Bay, Florida and the weather forecast is looking to be just about perfect – see our game day forecast below.

What about Super Bowl’s in the past?  Was there ever any notable weather during the big game?  You bet there was.  Here are some fun facts (courtesy wx-man.com):

  • 17 of 42 Super Bowls played indoors
  • 16 of 42 Super Bowls had a trace or more of rain nearby
  • 2 Super Bowls had snow on game day (1982,2006)
  • 1 Super Bowl played during an ice storm (2000)
  • Warmest high temperature of 82° (1973,2003)
  • Coldest high temp for dome game 16° (1982)
  • Coldest high temp for non-dome game 49° (1985)
  • Wettest Super Bowl .92 inches (2007)
  • Outside games with high wind gust (1980, 1984, 1989,2007)

You will notice there isn’t really any mention of severe weather in those statistics. The NFL has been pretty fortunate on that front with nothing particularly notable – rain always seems to be the biggest threat. 

For a more in depth look at severe weather in February in Florida, the Super Bowl forecast and some interesting tornado statistics, please visit our Examiner.com story.

For all the details, read the rest of this story on our Denver Weather Examiner page. Examiner.com - Get inside Denver weather 

Denver officially breaks high temperature record for this date

Denver officially broke the record high temperature for January 21st, reaching 71 degrees.
Denver officially broke the record high temperature for January 21st, reaching 71 degrees.

It’s official. As reported earlier this morning on our Examiner.com pages, we had a decent shot at breaking the all time record high temperature for this date and we have done it.  At 1:28pm today the temperature at Denver International Airport reached 71 degrees, breaking the old record of 70 degrees set in 1950.  Here in Thoronton we didn’t get quite that warm, “only” reaching a high of 69 degrees.

Thursday we will be a bit cooler and “only” reach 65 degrees – still 20 degrees above normal though.  Enjoy the next 36 hours or so though as Friday bring change – see our Examiner.com morning forecast here for details.

Get more local news and weather information on Examiner.com.

This article and many more are posted to the Denver Weather Examiner site.

 

Visit Examiner.com for more local Denver news and weather.

December 14 – 20 – This week in Denver weather history

December 14 - 20 - This week in Denver weather history.
December 14 - 20 - This week in Denver weather history.

Our look back in Denver weather history for this week is punctuated by hurricane force winds – numerous times.  Some of these storms reached 120 mph, overturned semis, ripped roofs off and more.  Also notable is the blizzard we suffered through two years ago this week.

From the National Weather Service:

…THIS WEEK IN METRO DENVER WEATHER HISTORY…

2-17 

In 1939…more than 2 weeks of unseasonably warm weather made the month the 3rd warmest on record.  Seven daily temperature records were set…including the all time record high temperature for the month of 79 degrees on the 5th.  Daytime highs were balmy with 14 days in the 60’s and 70’s.  Low temperatures dipped to freezing or below on only 5 days.  The period was dry with only a trace of snow on the 12th.

3-15 

In 1972…a protracted cold spell held an icy grip on metro Denver when maximum temperatures never reached above freezing for 10 consecutive days from the 3rd through the 12th and minimum temperatures dipped below zero on eleven consecutive days from the 5th through the 15th. Daily low temperature records were set with 15 degrees below zero on the 5th…17 degrees below zero on the 6th… And 18 degrees below zero on the 10th.  Daily record low maximum readings were set with 3 degrees on the 6th and 6 degrees on the 9th.  The very cold temperatures were caused by 3 to 5 inches of snow cover and a Canadian air mass.

Continue reading December 14 – 20 – This week in Denver weather history

December 7 – 13 – This week in Denver weather history

December 7 - 13 - This week in Denver weather history.
December 7 - 13 - This week in Denver weather history.

Big wind, big snow, a heat wave and Arctic cold all highlight our look back at this week in Denver weather history.

From the National Weather Service:

2-17

IN 1939…MORE THAN 2 WEEKS OF UNSEASONABLY WARM WEATHER MADE THE MONTH THE 3RD WARMEST ON RECORD.  SEVEN DAILY TEMPERATURE RECORDS WERE SET…INCLUDING THE ALL TIME RECORD HIGH TEMPERATURE FOR THE MONTH OF 79 DEGREES ON THE 5TH.  DAYTIME HIGHS WERE BALMY WITH 14 DAYS IN THE 60`S AND 70`S.  LOW TEMPERATURES DIPPED TO FREEZING OR BELOW ON ONLY 5 DAYS.  THE PERIOD WAS DRY WITH ONLY A TRACE OF SNOW ON THE 12TH.

3-15

IN 1972…A PROTRACTED COLD SPELL HELD AN ICY GRIP ON METRO DENVER WHEN MAXIMUM TEMPERATURES NEVER REACHED ABOVE FREEZING FOR 10 CONSECUTIVE DAYS FROM THE 3RD THROUGH THE 12TH AND MINIMUM TEMPERATURES DIPPED BELOW ZERO ON ELEVEN CONSECUTIVE DAYS FROM THE 5TH THROUGH THE 15TH. DAILY LOW TEMPERATURE RECORDS WERE SET WITH 15 DEGREES BELOW ZERO ON THE 5TH…17 DEGREES BELOW ZERO ON THE 6TH… AND 18 DEGREES BELOW ZERO ON THE 10TH.  DAILY RECORD LOW MAXIMUM READINGS WERE SET WITH 3 DEGREES ON THE 6TH AND 6 DEGREES ON THE 9TH.  THE VERY COLD TEMPERATURES WERE CAUSED BY 3 TO 5 INCHES OF SNOW COVER AND A CANADIAN AIR MASS.

5-7

IN 1978…A MAJOR STORM DUMPED HEAVY SNOW ACROSS METRO DENVER. AT STAPLETON INTERNATIONAL AIRPORT…SNOWFALL TOTALED 8.5 INCHES…NORTHEAST WINDS GUSTED TO 46 MPH…AND TEMPERATURES PLUNGED FROM A HIGH OF 49 DEGREES ON THE 5TH TO A LOW OF ONLY 6 DEGREES ON THE 6TH.  MAXIMUM TEMPERATURE OF 6 DEGREES ON THE 7TH WAS A NEW DAILY RECORD LOW MAXIMUM READING.  MOST OF THE SNOW…6.7 INCHES…FELL ON THE 5TH.

Continue reading December 7 – 13 – This week in Denver weather history

November 23 to 29 – This week in Denver weather history

November 23 to 29 - This week in Denver weather history.
November 23 to 29 - This week in Denver weather history.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
645 PM MST SAT NOV 22 2008

…THIS WEEK IN METRO DENVER WEATHER HISTORY…

21-23

IN 1918…POST-FRONTAL SNOWFALL TOTALED 5.9 INCHES IN DOWNTOWN
DENVER. MOST OF THE SNOW…5.3 INCHES…FELL ON THE 22ND.
NORTH WINDS WERE SUSTAINED TO 20 MPH ON THE 21ST.
IN 1931…A MAJOR STORM DUMPED A TOTAL OF 13.2 INCHES OF
SNOWFALL OVER DOWNTOWN DENVER. MOST OF THE SNOW…11.4
INCHES…FELL ON THE 21ST. A VERY COLD AIR MASS SETTLED
OVER THE CITY AFTER THE HEAVY SNOW ON THE 21ST. AFTER A
LOW TEMPERATURE OF ZERO…THE TEMPERATURE CLIMBED TO A HIGH
OF ONLY 5 DEGREES ON THE 22ND…A RECORD LOW MAXIMUM FOR THE
DATE.

21-25

IN 1952…SNOWFALL OF 6.2 INCHES WAS MEASURED AT STAPLETON
AIRPORT WHERE NORTHEAST WINDS GUSTED TO 17 MPH ON THE
21ST.

Continue reading November 23 to 29 – This week in Denver weather history

November 16th – 22nd – This week in Denver weather history

This week in Denver weather history - November 16th to the 22nd.
This week in Denver weather history - November 16th to the 22nd.

Looking back into the Denver weather history books for this week, November 16th to the 22nd, we see a lot of the normal things we would expect to – lots of wind and snow.

 PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
645 PM MST SAT NOV 15 2008
 
..THIS WEEK IN METRO DENVER WEATHER HISTORY…

14-18 IN 1964…THE FIRST MEASURABLE SNOWFALL OF THE SEASON
        TOTALED 6.0 INCHES AT STAPLETON INTERNATIONAL AIRPORT
        WHERE NORTHEAST WINDS GUSTED TO 32 MPH ON THE 14TH.
        MOST OF THE SNOW…4.2 INCHES…FELL ON THE 14TH.  THIS
        WAS THE ONLY MEASURABLE SNOW OF THE MONTH.
15-16 IN 1894…WINDS BEHIND AN APPARENT STRONG COLD FRONT WERE
        SUSTAINED TO 60 MPH WITH GUSTS TO 75 MPH ON THE 15TH.
        SNOWFALL TOTALED 2.6 INCHES IN THE CITY.  TEMPERATURES
        PLUNGED FROM A HIGH OF 72 DEGREES ON THE 15TH TO A LOW
        OF ONLY 5 DEGREES ON THE 16TH.  THE HIGH TEMPERATURE
        ON THE 16TH WAS 24 DEGREES…WHICH OCCURRED SHORTLY
        AFTER MIDNIGHT.
      IN 1996…AROUND A FOOT OF NEW SNOW FELL IN THE FOOTHILLS
        WEST OF DENVER WITH 3 TO 6 INCHES AT LOWER ELEVATIONS
        ACROSS METRO DENVER.  SOME OF THE SNOWFALL TOTALS
        INCLUDED:  15 INCHES AT GEORGETOWN…12 INCHES AT IDAHO
        SPRINGS…10 INCHES AT CHIEF HOSA…AND 9 INCHES IN COAL
        CREEK CANYON.  SNOWFALL TOTALED 2.9 INCHES AT THE SITE
        OF THE FORMER STAPLETON INTERNATIONAL AIRPORT.  NORTHEAST
        WINDS GUSTED TO 23 MPH AT DENVER INTERNATIONAL AIRPORT ON
        THE 16TH.
Continue reading November 16th – 22nd – This week in Denver weather history

November 9th – 15th – This week in Denver weather history

November 9th - 15th - This week in Denver weather history.
November 9th - 15th - This week in Denver weather history.

Plenty of snow and wind dominate a look back at the Denver weather calendar for this week in weather history – November 9th to the 15th. 

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
645 PM MST SAT NOV 08 2008

…THIS WEEK IN METRO DENVER WEATHER HISTORY…

8-9   IN 1897…WEST WINDS WERE SUSTAINED TO 45 MPH WITH GUSTS
        AS HIGH AS 50 MPH IN THE CITY.
      IN 1919…POST-FRONTAL HEAVY SNOWFALL TOTALED 8.4 INCHES OVER
        DOWNTOWN DENVER.  MOST OF THE SNOW…6.6 INCHES…FELL ON THE
        9TH.  NORTH WINDS WERE SUSTAINED TO 26 MPH WITH GUSTS TO
        30 MPH ON THE 8TH.
      IN 1950…A MAJOR WINTER STORM DUMPED 10.4 INCHES OF SNOW AT
        STAPLETON AIRPORT WITH THE MOST SNOW…7.8 INCHES…FALLING
        ON THE 8TH.  EAST WINDS GUSTED TO 31 MPH AT STAPLETON
        AIRPORT ON THE 8TH.  SNOWFALL TOTALED 8.2 INCHES IN
        DOWNTOWN DENVER.
      IN 1958…STRONG WINDS CAUSED SOME DAMAGE IN BOULDER.  WEST-
        NORTHWEST WINDS GUSTED TO 40 MPH AT STAPLETON AIRPORT ON
        THE 8TH.
      IN 1975…HEAVY SNOWFALL HIT METRO DENVER.  SNOWFALL AT
        STAPLETON INTERNATIONAL AIRPORT TOTALED 8.0 INCHES AND
        EAST WINDS GUSTED TO 21 MPH.  POWER OUTAGES CAUSED BY THE
        STORM AFFECTED OVER 10 THOUSAND PEOPLE IN METRO DENVER.  IN
        THE FOOTHILLS WEST OF DENVER…10 TO 15 INCHES OF SNOW FELL.
        THE STORM PRODUCED THE GREATEST 24-HOUR PRECIPITATION…1.29
        INCHES…EVER RECORDED DURING THE MONTH OF NOVEMBER IN THE
        CITY.
Continue reading November 9th – 15th – This week in Denver weather history

This week in Denver weather history – October 26 to November 1

This week in Denver weather history - October 26 to November 1.
This week in Denver weather history - October 26 to November 1.

Lots of interesting stuff in this look back at Denver weather history for the week of October 26th to November 1st.  Lots of snow including some major storms and the seemingly ever present wind are on this look into history. 

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
645 PM MDT SAT OCT 25 2008

…THIS WEEK IN METRO DENVER WEATHER HISTORY…

25-26 IN 1996…4 TO 6 INCHES OF SNOW FELL IN THE FOOTHILLS WEST OF
        DENVER.  ONLY 1.5 INCHES OF SNOWFALL WERE MEASURED AT THE
        SITE OF THE FORMER STAPLETON INTERNATIONAL AIRPORT ON THE
        26TH.  THIS WAS THE ONLY MEASURABLE SNOW OF THE MONTH AT
        THE SITE.  THE SNOWFALL PRODUCED ICY AND SNOWPACKED
        HIGHWAYS…WHICH RESULTED IN A 50-TO 60-CAR PILEUP ON I-25
        SOUTH OF METRO DENVER.  WEST WINDS GUSTED TO 33 MPH AT
        DENVER INTERNATIONAL AIRPORT.
      IN 2006…A WINTER STORM BROUGHT HEAVY SNOWFALL TO METRO
        DENVER AND THE EASTERN FOOTHILLS.  TOTAL SNOWFALL RANGED
        FROM 12 TO 22 INCHES OVER THE HIGHER TERRAIN AND 6 TO 12
        INCHES ACROSS METRO DENVER.  NORTHERLY WINDS AT SUSTAINED
        SPEEDS OF 20 TO 30 MPH WITH GUSTS AS HIGH AS 47 MPH AT
        DENVER INTERNATIONAL AIRPORT WHIPPED THE SNOW INTO DRIFTS
        3 TO 4 FEET DEEP.  MANY TREE LIMBS SNAPPED UNDER THE WEIGHT
        OF THE HEAVY…WET SNOW WHICH ALSO DOWNED POWER LINES…
        LEAVING THOUSANDS OF RESIDENTS WITHOUT POWER.  STORM TOTAL
        SNOWFALL INCLUDED:  25 INCHES NEAR ASPEN SPRINGS…CONIFER…
        AND EVERGREEN; 23.5 INCHES NEAR ROLLINSVILLE; 23 INCHES IN
        IDAHO SPRINGS; 22.5 INCHES NEAR BLACKHAWK; 21.5 INCHES NEAR
        BAILEY; 19 INCHES NEAR BERGEN PARK; 18 INCHES NEAR ASPEN
        SPRINGS…GENESEE…AND JAMESTOWN; 17 INCHES SOUTHWEST OF
        BOULDER; 16 INCHES IN EVERGREEN; AND 15 INCHES NEAR
        GEORGETOWN AND PERRY PARK.  SNOWFALL TOTALED 5.3 INCHES
        IN THE DENVER STAPLETON AREA.  AT DENVER INTERNATIONAL
        AIPORT…RAIN…INCLUDING A THUNDERSTORM…CHANGED TO SNOW
        ON THE EVENING OF THE 25TH AFTER A HIGH TEMPERATURE OF
        70 DEGREES.
Continue reading This week in Denver weather history – October 26 to November 1