It's easy to join, takes only five minutes a day and is a fun way to learn about this wonderful natural resource that falls from the sky. If you get the chance, please take a moment to tell a friend or neighbor about this exciting grassroots effort of citizens measuring precipitation right in their own backyards. How often have you seen it rain in your neighborhood and a few blocks away not a drop has fallen. The saying " Rain doesn’t fall the same on all" really proves to be true. Know someone in Guam who might like to participate in measuring precipitation? To sign up just go to join CoCoRaHS, then click on United States and pull up Guam from the state field when you register. Minimum Seasonal Snowfall: 21.Reports received today as of 9:41 AM ESTĬoCoRaHS has recently expanded across the Pacific Ocean to the Island of Guam which is part of the Mariana Islands in the Western Pacific. Long Term Average Seasonal Snowfall: 56.9" (1882-2021) (Departure from Normal is based on the Period of Record from 1882-2022) Several Locations in and near 16th & Larimer (January 1882 to January 1916) Historical Locations for Snowfall Measurementsĭenver International Airport (July 2007 to Present)ĭenver Stapleton Airport (January 1950 to June 2007)ġ9th & Stout (February 1916 to December 1949) (Estimated Mean Seasonal Snowfall from 1991 to 2020 using data from CAIC, NOHRSC and PRISM) Historical Locations for Observed Snowfall at Denver For example, the western suburbs of Denver average around 65" per season while areas in and near DIA are around 47". In general, as you go the further east and northeast of the higher terrain, seasonal snowfall drops off dramatically. Four observations are taken per day at this location.Īs you can see, the current official observation at DIA has moved several miles to the east and northeast of the previous two locations. In the Fall of 2007, the official snowfall observations were moved to Denver International Airport (DIA). In reality, the Seasonal Average is probably closer to 56" as shown in the map below. As a result, the NCEI 30 Year Average (1991-2020) has dropped to 49" but is likely underestimated, due to only one observation taken per day. Currently, only one observation is taken per day at Central Park which remains a Cooperative Observer (COOP) site. Keep in mind, when the National Weather Service took observations from 1950 through the Spring of 1999, four snowfall observations were taken each day. They were located across downtown Denver (1882 to 1949), Stapleton Airport (1950 to August 2007) which is now called Central Park, and Denver International Airport (September 2007 to Present). Since snowfall records began in 1882, there have been three main locations for Official Snowfall Observations. History of Snowfall Observations at Denver, Colorado
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