A Hot and Mainly Dry September

A broad ridge of high pressure which persisted over the Rockies during the past week helped to make September 2010 one of the driest and warmest on record across most of south central and southeast Colorado.  A preliminary look at the data for the month has precipitation totals for Pueblo, Colorado Springs and Alamosa at  0.04, 0.09 and 0.73 inches, respectively. 

The 0.04 inches recorded at Pueblo ties September 2010 as the 7th driest on record along with the 0.04 inches recorded in 1888. This amount is barely behind the "trace" of precipitation recorded in September of 1956, 1916 and 1892, the 0.02 inches recorded in 1954 and 1890, and the 0.03 inches recorded in September of 1895.

The 0.09 inches of precipitation received at Colorado Springs makes September 2010 the 8th driest on record; behind the "trace" of precipitation recorded in 1953 and 1919, the 0.02 inches recorded in 1945, the 0.05 inches reported in 1978 and the 0.08 inches received in 1943, 1914 and 1899. 

The 0.73 inches of precipitation recorded at Alamosa in September of 2010 make it the 38th driest on record. 

On a side note,  most of the precipitation across the area was received on September 22, as a strong weather system moved across the state.  Needless to say, if this system had not brought the moisture it did, September of 2010 could have been one of the driest on record. 

The lack of precipitation allowed for temperatures to be well above seasonal averages across the area for the month of September.  Preliminary data gives the average temperature at Pueblo, Colorado Springs and Alamosa at  68.6F, 67.0F and 58.1F, respectively. 

The average temperature of 67.0F at Colorado Springs was a whopping 7.2F above normal and makes September 2010 the warmest on record, ahead of the 66.6F recorded  in 1931.  Breaking down the numbers even further, the average high and low temperature at Colorado Springs in September of 2010 was 83.2F and 50.7 F respectively, which are 9.1F and 5.3F above the monthly average,  respectively. 

The average temperature of 58.1F at Alamosa is 3.6F above normal and makes September 2010 the 4th warmest on record, behind the 59.0F recorded in 1933.  Breaking down the numbers even further, the average high and low temperature for September at Alamosa was 79.6F and 36.6F respectively, which are 7.1F and 0.1F above normal, respectively.

The average temperature of 68.6F recorded at Pueblo is 3.8F above normal, and makes September 2010 the 11th warmest on record, behind the 71.0F recorded in 1931. Breaking down the numbers even further, the average high and low temperature at Pueblo for September was 88.7F and 48.5F respectively, which is 7.9F above normal and 0.2F below normal, respectively. 

 

>These data are preliminary and have not undergone final quality control by The National Climatic Data Center /NCDC/. Therefore...these data are subject to revision. Final and certified climate data can be accessed at www.ncdc,noaa.gov.

>>"trace" is defined as less than 0.01 of an inch of precipitation

>>>Alamosa Climate Data: Normals (1971-2000), Extremes (1932-Present)

        Colorado Springs Climate Data: Normals (1971-2000), Extremes (1895-Present)

        Pueblo Climate Data: Normals (1971-2000), Extremes (1888-Present) 



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