March 2012 in the Mile High City was notable for its far less than typical weather. Not only did six individual days break records but it also will go into the history books as the driest, least snowiest…
March 2012 goes into the Denver weather history books on a number of marks
The month of March in Denver is typically known for its snow and corresponding chilly temperatures. That however was certainly not the case for March 2012 as the Mile High City saw one of its warmest and driest Marches on record.
From the start of the month to the end, March’s temperatures were well above normal. While we would normally see days with temperatures in the 50s, we instead saw 70s and even a couple of 80+ degree days.
The historical overall average temperature for the month of March is 40.4 degrees (based on 1981 to 2010 normals). March 2012’s average of 49.2 degrees was an astonishing 8.8 degrees above normal.
This sends the month into the record books as the second warmest March ever recorded in Denver. The number one spot is held by March 1910 which saw an average of 50.4 degrees.
Here in Thornton, we were actually slightly warmer than the official Denver measuring station at DIA. Our monthly average temperature came in at 49.6 degrees.
Individually, six days set or tied high temperature records for Denver:
- 74 degrees on March 13 which tied the old record of 74 set in 2007 and previous years
- 75 degrees on March 16 which broke the old record of 74 set just one year ago in 2011
- 76 degrees on March 17 which broke the old record of 75 set in 1974
- 76 degrees on March 23 which tied the old record of 76 set in 1967
- 75 degrees on March 25 which tied the old record of 75 set in 1998 and previous years
- 81 degrees on March 31 which broke the old record of 80 set in 1946
In terms of precipitation, March 2012 will now hold the marks for the driest and least snowiest on record.
The rain bucket at Denver International Airport saw a mere 0.03 inch of liquid precipitation. This was far below the average of 0.92 inch and easily puts March 2012 into the books as the number one driest March on record. The previous record holder was 1908 when 0.11 inch was recorded.
March is historically Denver’s snowiest month averaging 10.7 inches. This year the month only brought a trace of snow on three days. The previous least snowiest March occurred in 1883 when 0.3 inch of the white stuff was recorded.
Just like Denver, Thornton saw an extraordinary lack of snow and precipitation. We as well recorded 0.03 inch of precipitation but we did manage to record 0.40 inch of snow, all on the morning of the 2nd.
Click here to view the March 2012 climate summary for Thornton.
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
1026 AM MDT SUN APR 1 2012
...................................
...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF MARCH 2012...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2012
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 84 03/26/1971
LOW -11 03/28/1886
HIGHEST 81 03/31 84 -3 76 03/21
LOWEST 16 03/02 -11 27 14 03/05
AVG. MAXIMUM 65.5 54.4 11.1 58.7
AVG. MINIMUM 32.9 26.4 6.5 27.8
MEAN 49.2 40.4 8.8 43.3
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 1.9 -1.9 1
DAYS MIN <= 32 14 23.6 -9.6 24
DAYS MIN <= 0 0 0.1 -0.1 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 4.56 1983
MINIMUM 0.11 1908
TOTALS 0.03R 0.92 -0.89 0.35
DAILY AVG. 0.00 0.03 -0.03 0.01
DAYS >= .01 2 5.9 -3.9 8
DAYS >= .10 0 2.4 -2.4 1
DAYS >= .50 0 0.3 -0.3 0
DAYS >= 1.00 0 0.1 -0.1 0
GREATEST
24 HR. TOTAL 0.03 03/01 TO 03/02 03/28 TO 03/28
03/28 TO 03/28
03/28 TO 03/28
STORM TOTAL MM MM
(MM/DD(HH)) MM 03/28(00) TO 03/28(00)
03/28(00) TO 03/28(00)8
03/28(00) TO 03/28(00)8
SNOWFALL (INCHES)
RECORDS
TOTAL MM 5
TOTALS T 11.7
DEGREE_DAYS
HEATING TOTAL 483 763 -280 666
SINCE 7/1 4863 5202 -339 4817
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 0
FREEZE DATES
RECORD
EARLIEST 09/08/1962
LATEST 06/08/2007
EARLIEST 10/07
LATEST 05/05
.........................................................
WIND (MPH)
AVERAGE WIND SPEED 11.5
RESULTANT WIND SPEED/DIRECTION 5/203
HIGHEST WIND SPEED/DIRECTION 46/180 DATE 03/18
HIGHEST GUST SPEED/DIRECTION 58/190 DATE 03/18
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.50
NUMBER OF DAYS FAIR 9
NUMBER OF DAYS PC 20
NUMBER OF DAYS CLOUDY 2
AVERAGE RH (PERCENT) 34
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 0 FREEZING RAIN 0
LT FREEZING RAIN 1 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 2 SLEET 0
FOG 2 FOG W/VIS <= 1/4 MILE 0
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
April 1 to April 7 – This Week in Denver Weather History
April in the Denver area can offer up an extraordinary array of weather conditions. As we discussed in our April weather preview, everything from wind and snow to thunderstorms and tornadoes can make an appearance. We see this variety in our look back at this week in Denver weather history which includes all of those conditions and more.
From the National Weather Service:
31-1
In 1876…heavy snow began during the night and lasted all day on the 31st and through the morning of the 1st. The average depth of snow fall was 10 to 12 inches…but strong winds whipped the snow into drifts of 8 to 10 feet deep on the streets of the city. Precipitation from the storm was 1.03 inches on the 31st and 0.37 inch on the 1st.
In 1891…heavy moist snowfall totaled 18.0 inches in the city. Northeast winds were sustained to 20 mph with gusts to 24 mph on the 31st.
In 1936…northeast winds sustained to 21 mph produced a light dust storm in the city.
In 1975…a major storm dumped 9.3 inches of snowfall at Stapleton International Airport where northwest winds gusted to 41 mph. Rain changed to snow on the afternoon of the 31st…reducing the visibility to as low as 1/8 mile. Snow continued all day on the 1st and accumulated to a depth of 8 inches on the ground. The minimum temperature of 10 degrees on the 1st set a new record low for the date.
31-2
In 1980…the second major blizzard in 5 days buried much of eastern Colorado under 6 to 12 inches of snow. Some drifts were up to 22 feet high. Hundreds of travelers were stranded. Over 3000 families were without power. Livestock losses were high. Metro Denver escaped the main brunt of this storm. At Stapleton International Airport…only 6.3 inches of snow fell over the 3-day period and north winds gusted to only 22 mph on the 1st.
31-3
In 1979…total snowfall of 6.6 inches was measured at Stapleton International Airport where north winds gusted to 31 mph on the 31st. The greatest accumulation of snow on the ground was 3 inches on the 1st.
31-4
In 1905…much rain and some snow occurred over the 5 days behind an apparent cold front. Precipitation totaled 2.00 inches. There was a thunderstorm on the 3rd. Snowfall totaled 3.0 inches on the 4th. North winds were sustained to 34 mph on the 1st and 2nd and to 30 mph on the 3rd. High temperatures during the period ranged from the upper 30’s to the lower 40’s. Low temperatures were in the upper 20’s and lower 30’s.
1
In 1987…a vigorous cold front produced 2.3 inches of snowfall at Stapleton International Airport where northeast winds gusted to 39 mph. The temperature dropped from a maximum of 59 degrees at mid-morning to a low of 25 degrees at midnight.
1-2
In 1963…strong winds buffeted metro Denver…while wind- whipped fires consumed grassland on the plains. A child was injured by a windblown falling tree in Castle Rock. Southwest winds gusted to 52 mph at Stapleton Airport… Causing some blowing dust. The worst fire storm burned over 25 thousand acres of grazing land in southern Weld County near Roggen northeast of Denver.
In 1984…a snowstorm with near-blizzard conditions over eastern Colorado closed many roads…including I-70 and I-76 east of Denver and I-25 between Denver and Colorado Springs. At Stapleton International Airport…snowfall totaled only 2.5 inches…but north winds gusted to 45 mph on the 2nd.
In 1999…moist upslope conditions allowed heavy snow to develop in the Front Range foothills where snowfall totals included: 10 inches at aspen park and Evergreen; 9 inches at turkey creek; 8 inches at Idaho Springs and Genesee; 7 inches at Aspen Springs…Crow Hill…Intercanyon…and Lake George.
In metro Denver snowfall totals included: 10 inches south of Sedalia; 8 inches in Littleton; 7 inches at Morrison; 6 inches at Highlands Ranch; and 4 to 5 inches in Northglenn…Parker and near Louisville. Snowfall totaled 4.7 inches at the site of the former Stapleton International Airport.
1-3
In 1945…snow fell across metro Denver for a total of 51 consecutive hours. While the storm was not accompanied by excessive snow…the long duration made the event a heavy snow producer. Snowfall totaled 10.7 inches in downtown Denver with 9.5 inches recorded at Stapleton Airport. North winds were sustained to 21 mph on the 1st; otherwise winds were not strong. The air mass was very cold for April. The high temperatures of 26 on the 2nd and 17 on the 3rd were record low maximums for the dates. The latter was also a record low maximum for the month. Warm weather following the storm quickly melted the snow.
In 1973…heavy snow fell at Stapleton International Airport where 8.7 inches were measured. Snow began late on the 1st and continued through early morning on the 3rd. Thunder accompanied the snow during the late morning and afternoon of the 2nd. North winds gusted to 33 mph on the 2nd and 37 mph on the 3rd. Snow only accumulated to a depth of 5 inches on the ground due to melting.
In 1977 a foot of snow fell in Boulder and Broomfield. The Denver-Boulder turnpike was closed for an hour after numerous minor traffic accidents. At Stapleton International Airport…snowfall totaled 4.7 inches and southeast winds gusted to 32 mph on the 2nd. The greatest depth of snow on the ground was only 3 inches due to melting.
Continue reading April 1 to April 7 – This Week in Denver Weather History
Denver’s April weather preview: A month with something for everyone
April marks a transition between winter and summer for most of the country but for Denver it is especially true as we can see a stunning variety of weather.The proverbial April showers are certainly a possibility for Denver. Snow…
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Sunday brings another record day; March 2012 likely to go into record books
Another unseasonably mild day led to another high temperature record being tied on Sunday. As the unseasonably warm weather continues, March 2012 is almost certain to go into the record books on a number of marks.
The temperature at Denver International Airport reached 75 degrees at 4:05pm Sunday afternoon. This tied the record high temperature for the date last set in 1998. This is far and above the normal for the date of 57 degrees.
Here in Thornton we were a bit cooler and reached a high temperature of 72.3 degrees.
The record-tying mark is the fifth time so far this month that the record high temperature was tied or broken. Other days with record highs this month:
- 76 degrees on March 23, which tied the old record of 76 set in 1967
- 76 degrees on March 17, which broke the old record of 75 set in 1974
- 75 degrees on March 16, which broke the old record of 74 set just one year ago in 2011
- 74 degrees on March 13, which tied the old record of 74 set in 2007 and previous years
Officially Denver has recorded only a trace of snow this month and a scant 0.03 inch of precipitation. Given the forecast for the coming week, it is likely the month will end with those totals. If it does, March 2012 will go into the history books as the least snowiest and driest March on record.
In terms of temperatures, Denver’s overall average temperature for the month so far is at 47.0 degrees. That would put the month in a tie for the fourth warmest March on record. However with temperatures expected to remain unseasonably warm through the week, there is a good chance we will climb the ‘top 10’ list even further.
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March 25 to March 31 – This Week in Denver Weather History
In stark contrast to the extremely dry and mild month we are experiencing now, March is normally known for its snow. In our look back at this week in Denver weather history we see many significant snow events that have occurred in the past and are much more representative of Denver’s March weather.
From the National Weather Service:
23-25
In 1891…rain changed to snow and totaled 8.8 inches in downtown Denver. Most of the snow fell on the 24th. Winds were light.
In 1964…heavy snowfall of 5.8 inches was measured at Stapleton International Airport. North-northeast winds gusted to 21 mph behind a cold front.
24-25
In 1904…west Bora winds sustained to 40 mph with gusts to 55 mph warmed the temperature to a high of 49 degrees on the 24th. Overnight…a cold front produced 4.5 inches of snow. The high temperature was only 34 degrees on the 25th.
In 1955…a vigorous cold front with winds sustained to 34 mph and gusts to 39 mph briefly reduced the visibility to 2 miles in blowing dust at Stapleton Airport. Post-frontal heavy snowfall totaled 9.5 inches at Stapleton Airport where the maximum snow depth on the ground was 7 inches.
24-26
In 1959…the second major spring storm in less than a week dumped 10 to 20 inches of wet snow across northeastern Colorado. Snowfall totaled 14.3 inches at Stapleton Airport where north winds gusted to 36 mph…causing near-blizzard conditions with visibilities frequently reduced to 1/2 mile in snow and blowing snow. Many travelers were marooned when trains…planes…and buses were unable to make their schedules. Utility lines were again damaged as a result of the storm.
25
In 1874…the wind blowing in gusts from the west-northwest filled the air with dust so dense that only the houses in the immediate neighborhood of the weather station could be recognized. The brisk winds continued through the afternoon.
In 1886…heavy snowfall of 6.5 inches occurred in the city.
In 1896…northwest winds sustained to 58 mph with gusts to 65 mph warmed the temperature to a high of 70 degrees.
In 1911…west winds were sustained to 43 mph. The Chinook winds warmed the temperature to a high of 65 degrees.
In 1925…northwest winds were sustained to 41 mph with gusts to 46 mph.
In 1950…strong Chinook winds gusted to 50 mph at Stapleton Airport.
In 1976…3.4 inches of snow fell at Stapleton International Airport where northeast winds gusted to 46 mph. The strong winds at 20 to 35 mph all day produced a rare “snirt” storm when blowing dust and dirt became mixed with snow and blowing snow reducing the visibility to as low as 1/4 mile at Stapleton International Airport.
In 1984…1 to 4 inches of new snow fell across metro Denver. Icy roads contributed to many accidents. The most hazardous conditions occurred in the foothills west of Denver. Both I-70 and U.S. 40 were closed at the height of the Sunday afternoon ski rush…causing delays of many hours. Snowfall totaled only 1.0 inch at Stapleton International Airport with only a trace on the ground due to melting.
In 1988…high winds in the mountains spread over metro Denver. A wind gust to 75 mph was noted in Boulder where a traffic light was downed. Power outages were reported in Boulder County. Northwest winds to 46 mph were recorded at Stapleton International Airport.
Continue reading March 25 to March 31 – This Week in Denver Weather History
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