| Station Overview | Station Location | ||
|---|---|---|---|
| Station Number | CO-AR-321 | Latitude | 39.570286 |
| Station Name | Littleton 5.0 ESE | Longitude | -104.925979 |
| County | Arapahoe | Elevation (ft) | 5762 |
| Month | 30 Yr Avg by PRISM | Total Prcp Sum | Days Covered By All Observations | Daily Prcp Sum | Daily Observation Count | Multiday Prcp Sum | Days Covered by Multiday Observations | Multiday Observation Count | Days With Prcp | Days With Trace | Total Snowfall | Days With Snowfall | Days With Snow On Ground |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 15 | 1.34 | 1.88 | 5 | 1.88 | 5 | 0.00 | 0 | 0 | 5 | 0 | 0.0 | 0 | 0 |
| Nov 15 | 0.95 | 0.44 | 3 | 0.44 | 3 | 0.00 | 0 | 0 | 3 | 0 | 7.7 | 3 | 2 |
| Dec 15 | 0.73 | 0.98 | 4 | 0.98 | 4 | 0.00 | 0 | 0 | 4 | 0 | 16.3 | 4 | 4 |
| Jan 16 | 0.55 | 0.33 | 3 | 0.33 | 3 | 0.00 | 0 | 0 | 3 | 0 | 4.6 | 3 | 1 |
| Feb 16 | 0.56 | 0.88 | 3 | 0.88 | 3 | 0.00 | 0 | 0 | 3 | 0 | 12.7 | 3 | 3 |
| March 16 | 1.86 | 3.25 | 9 | 3.25 | 9 | 0.00 | 0 | 0 | 9 | 0 | 28.6 | 7 | 4 |
| April 16 | 2.30 | 3.85 | 8 | 3.85 | 8 | 0.00 | 0 | 0 | 8 | 0 | 23.9 | 6 | 2 |
| May 16 | 2.63 | 1.49 | 4 | 1.49 | 4 | 0.00 | 0 | 0 | 4 | 0 | 1.7 | 1 | 1 |
| June 16 | 2.05 | 2.25 | 14 | 1.86 | 5 | 0.39 | 9 | 1 | 5 | 0 | 0.0 | 0 | 0 |
| July 16 | 2.45 | 0.59 | 5 | 0.59 | 5 | 0.00 | 0 | 0 | 5 | 0 | 0.0 | 0 | 0 |
| Aug 16 | 2.46 | 1.06 | 4 | 1.06 | 4 | 0.00 | 0 | 0 | 4 | 0 | 0.0 | 0 | 0 |
| Sept 16 | 1.24 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.0 | 0 | 0 |
| Water Year Totals: | 19.12" | 17.00" | 62 days | 16.61" | 53 | 0.39" | 9 days | 1 | 53 days | 0 days | 95.5" | 27 days | 17 days |
| Days in Water Year Cell Color Key | |||
|---|---|---|---|
| Daily Observation with Prcp | Missing Day | ||
| Multiday Observation | Daily/Multiday Observation Conflict | ||
| Day of Year | Daily Prcp | Multiday Prcp |
|---|---|---|
| 10/1/2015 | ||
| 10/2/2015 | ||
| 10/3/2015 | 0.04 | |
| 10/4/2015 | ||
| 10/5/2015 | ||
| 10/6/2015 | ||
| 10/7/2015 | 0.19 | |
| 10/8/2015 | ||
| 10/9/2015 | ||
| 10/10/2015 | ||
| 10/11/2015 | ||
| 10/12/2015 | ||
| 10/13/2015 | ||
| 10/14/2015 | ||
| 10/15/2015 | ||
| 10/16/2015 | ||
| 10/17/2015 | ||
| 10/18/2015 | ||
| 10/19/2015 | ||
| 10/20/2015 | ||
| 10/21/2015 | 0.31 | |
| 10/22/2015 | 0.81 | |
| 10/23/2015 | 0.53 | |
| 10/24/2015 | ||
| 10/25/2015 | ||
| 10/26/2015 | ||
| 10/27/2015 | ||
| 10/28/2015 | ||
| 10/29/2015 | ||
| 10/30/2015 | ||
| 10/31/2015 | ||
| 11/1/2015 | ||
| 11/2/2015 | ||
| 11/3/2015 | ||
| 11/4/2015 | ||
| 11/5/2015 | ||
| 11/6/2015 | ||
| 11/7/2015 | ||
| 11/8/2015 | ||
| 11/9/2015 | ||
| 11/10/2015 | ||
| 11/11/2015 | ||
| 11/12/2015 | ||
| 11/13/2015 | ||
| 11/14/2015 | ||
| 11/15/2015 | ||
| 11/16/2015 | ||
| 11/17/2015 | ||
| 11/18/2015 | ||
| 11/19/2015 | ||
| 11/20/2015 | ||
| 11/21/2015 | ||
| 11/22/2015 | ||
| 11/23/2015 | ||
| 11/24/2015 | ||
| 11/25/2015 | ||
| 11/26/2015 | ||
| 11/27/2015 | 0.17 | |
| 11/28/2015 | 0.01 | |
| 11/29/2015 | ||
| 11/30/2015 | 0.26 | |
| 12/1/2015 | ||
| 12/2/2015 | ||
| 12/3/2015 | ||
| 12/4/2015 | ||
| 12/5/2015 | ||
| 12/6/2015 | ||
| 12/7/2015 | ||
| 12/8/2015 | ||
| 12/9/2015 | ||
| 12/10/2015 | ||
| 12/11/2015 | ||
| 12/12/2015 | ||
| 12/13/2015 | 0.17 | |
| 12/14/2015 | ||
| 12/15/2015 | 0.48 | |
| 12/16/2015 | 0.21 | |
| 12/17/2015 | ||
| 12/18/2015 | ||
| 12/19/2015 | ||
| 12/20/2015 | ||
| 12/21/2015 | ||
| 12/22/2015 | ||
| 12/23/2015 | ||
| 12/24/2015 | ||
| 12/25/2015 | ||
| 12/26/2015 | 0.12 | |
| 12/27/2015 | ||
| 12/28/2015 | ||
| 12/29/2015 | ||
| 12/30/2015 | ||
| 12/31/2015 |
| Day of Year | Daily Prcp | Multiday Prcp |
|---|---|---|
| 1/1/2016 | ||
| 1/2/2016 | ||
| 1/3/2016 | ||
| 1/4/2016 | ||
| 1/5/2016 | ||
| 1/6/2016 | ||
| 1/7/2016 | ||
| 1/8/2016 | 0.14 | |
| 1/9/2016 | 0.08 | |
| 1/10/2016 | ||
| 1/11/2016 | ||
| 1/12/2016 | ||
| 1/13/2016 | ||
| 1/14/2016 | ||
| 1/15/2016 | ||
| 1/16/2016 | ||
| 1/17/2016 | ||
| 1/18/2016 | ||
| 1/19/2016 | ||
| 1/20/2016 | ||
| 1/21/2016 | ||
| 1/22/2016 | ||
| 1/23/2016 | ||
| 1/24/2016 | ||
| 1/25/2016 | ||
| 1/26/2016 | ||
| 1/27/2016 | ||
| 1/28/2016 | ||
| 1/29/2016 | ||
| 1/30/2016 | ||
| 1/31/2016 | 0.11 | |
| 2/1/2016 | 0.08 | |
| 2/2/2016 | 0.56 | |
| 2/3/2016 | 0.24 | |
| 2/4/2016 | ||
| 2/5/2016 | ||
| 2/6/2016 | ||
| 2/7/2016 | ||
| 2/8/2016 | ||
| 2/9/2016 | ||
| 2/10/2016 | ||
| 2/11/2016 | ||
| 2/12/2016 | ||
| 2/13/2016 | ||
| 2/14/2016 | ||
| 2/15/2016 | ||
| 2/16/2016 | ||
| 2/17/2016 | ||
| 2/18/2016 | ||
| 2/19/2016 | ||
| 2/20/2016 | ||
| 2/21/2016 | ||
| 2/22/2016 | ||
| 2/23/2016 | ||
| 2/24/2016 | ||
| 2/25/2016 | ||
| 2/26/2016 | ||
| 2/27/2016 | ||
| 2/28/2016 | ||
| 2/29/2016 | ||
| 3/1/2016 | ||
| 3/2/2016 | ||
| 3/3/2016 | ||
| 3/4/2016 | ||
| 3/5/2016 | ||
| 3/6/2016 | ||
| 3/7/2016 | ||
| 3/8/2016 | 0.16 | |
| 3/9/2016 | ||
| 3/10/2016 | ||
| 3/11/2016 | ||
| 3/12/2016 | ||
| 3/13/2016 | ||
| 3/14/2016 | ||
| 3/15/2016 | ||
| 3/16/2016 | ||
| 3/17/2016 | ||
| 3/18/2016 | 0.39 | |
| 3/19/2016 | 0.04 | |
| 3/20/2016 | ||
| 3/21/2016 | ||
| 3/22/2016 | ||
| 3/23/2016 | 0.83 | |
| 3/24/2016 | 1.61 | |
| 3/25/2016 | ||
| 3/26/2016 | 0.11 | |
| 3/27/2016 | 0.01 | |
| 3/28/2016 | ||
| 3/29/2016 | ||
| 3/30/2016 | 0.01 | |
| 3/31/2016 | 0.09 |
| Day of Year | Daily Prcp | Multiday Prcp |
|---|---|---|
| 4/1/2016 | 0.14 | |
| 4/2/2016 | ||
| 4/3/2016 | ||
| 4/4/2016 | ||
| 4/5/2016 | ||
| 4/6/2016 | ||
| 4/7/2016 | ||
| 4/8/2016 | ||
| 4/9/2016 | ||
| 4/10/2016 | ||
| 4/11/2016 | ||
| 4/12/2016 | ||
| 4/13/2016 | ||
| 4/14/2016 | ||
| 4/15/2016 | ||
| 4/16/2016 | 0.85 | |
| 4/17/2016 | 1.64 | |
| 4/18/2016 | 0.08 | |
| 4/19/2016 | ||
| 4/20/2016 | ||
| 4/21/2016 | ||
| 4/22/2016 | ||
| 4/23/2016 | ||
| 4/24/2016 | ||
| 4/25/2016 | ||
| 4/26/2016 | 0.03 | |
| 4/27/2016 | 0.09 | |
| 4/28/2016 | ||
| 4/29/2016 | 0.28 | |
| 4/30/2016 | 0.74 | |
| 5/1/2016 | 0.34 | |
| 5/2/2016 | ||
| 5/3/2016 | ||
| 5/4/2016 | ||
| 5/5/2016 | ||
| 5/6/2016 | ||
| 5/7/2016 | ||
| 5/8/2016 | 0.17 | |
| 5/9/2016 | ||
| 5/10/2016 | ||
| 5/11/2016 | ||
| 5/12/2016 | ||
| 5/13/2016 | ||
| 5/14/2016 | ||
| 5/15/2016 | ||
| 5/16/2016 | ||
| 5/17/2016 | 0.70 | |
| 5/18/2016 | ||
| 5/19/2016 | ||
| 5/20/2016 | ||
| 5/21/2016 | ||
| 5/22/2016 | ||
| 5/23/2016 | ||
| 5/24/2016 | ||
| 5/25/2016 | ||
| 5/26/2016 | ||
| 5/27/2016 | 0.28 | |
| 5/28/2016 | ||
| 5/29/2016 | ||
| 5/30/2016 | ||
| 5/31/2016 | ||
| 6/1/2016 | 0.13 | |
| 6/2/2016 | ||
| 6/3/2016 | ||
| 6/4/2016 | ||
| 6/5/2016 | ||
| 6/6/2016 | ||
| 6/7/2016 | 1.15 | |
| 6/8/2016 | 0.40 | |
| 6/9/2016 | ||
| 6/10/2016 | ||
| 6/11/2016 | ||
| 6/12/2016 | ||
| 6/13/2016 | ||
| 6/14/2016 | 0.14 | |
| 6/15/2016 | ||
| 6/16/2016 | ||
| 6/17/2016 | ||
| 6/18/2016 | ||
| 6/19/2016 | ||
| 6/20/2016 | ||
| 6/21/2016 | 0.04 | |
| 6/22/2016 | ** | |
| 6/23/2016 | ** | |
| 6/24/2016 | ** | |
| 6/25/2016 | ** | |
| 6/26/2016 | ** | |
| 6/27/2016 | ** | |
| 6/28/2016 | ** | |
| 6/29/2016 | ** | |
| 6/30/2016 | 0.39 |
| Day of Year | Daily Prcp | Multiday Prcp |
|---|---|---|
| 7/1/2016 | 0.21 | |
| 7/2/2016 | 0.15 | |
| 7/3/2016 | 0.05 | |
| 7/4/2016 | ||
| 7/5/2016 | ||
| 7/6/2016 | 0.04 | |
| 7/7/2016 | ||
| 7/8/2016 | ||
| 7/9/2016 | ||
| 7/10/2016 | ||
| 7/11/2016 | ||
| 7/12/2016 | ||
| 7/13/2016 | ||
| 7/14/2016 | ||
| 7/15/2016 | ||
| 7/16/2016 | ||
| 7/17/2016 | ||
| 7/18/2016 | ||
| 7/19/2016 | ||
| 7/20/2016 | ||
| 7/21/2016 | ||
| 7/22/2016 | ||
| 7/23/2016 | ||
| 7/24/2016 | ||
| 7/25/2016 | ||
| 7/26/2016 | ||
| 7/27/2016 | ||
| 7/28/2016 | ||
| 7/29/2016 | 0.14 | |
| 7/30/2016 | ||
| 7/31/2016 | ||
| 8/1/2016 | ||
| 8/2/2016 | ||
| 8/3/2016 | ||
| 8/4/2016 | ||
| 8/5/2016 | ||
| 8/6/2016 | ||
| 8/7/2016 | ||
| 8/8/2016 | ||
| 8/9/2016 | ||
| 8/10/2016 | ||
| 8/11/2016 | ||
| 8/12/2016 | ||
| 8/13/2016 | ||
| 8/14/2016 | ||
| 8/15/2016 | ||
| 8/16/2016 | ||
| 8/17/2016 | 0.04 | |
| 8/18/2016 | ||
| 8/19/2016 | ||
| 8/20/2016 | 0.11 | |
| 8/21/2016 | ||
| 8/22/2016 | ||
| 8/23/2016 | ||
| 8/24/2016 | ||
| 8/25/2016 | 0.21 | |
| 8/26/2016 | ||
| 8/27/2016 | ||
| 8/28/2016 | ||
| 8/29/2016 | ||
| 8/30/2016 | ||
| 8/31/2016 | 0.70 | |
| 9/1/2016 | ||
| 9/2/2016 | ||
| 9/3/2016 | ||
| 9/4/2016 | ||
| 9/5/2016 | ||
| 9/6/2016 | ||
| 9/7/2016 | ||
| 9/8/2016 | ||
| 9/9/2016 | ||
| 9/10/2016 | ||
| 9/11/2016 | ||
| 9/12/2016 | ||
| 9/13/2016 | ||
| 9/14/2016 | ||
| 9/15/2016 | ||
| 9/16/2016 | ||
| 9/17/2016 | ||
| 9/18/2016 | ||
| 9/19/2016 | ||
| 9/20/2016 | ||
| 9/21/2016 | ||
| 9/22/2016 | ||
| 9/23/2016 | ||
| 9/24/2016 | ||
| 9/25/2016 | ||
| 9/26/2016 | ||
| 9/27/2016 | ||
| 9/28/2016 | ||
| 9/29/2016 | ||
| 9/30/2016 |
| Observation Date | Observation Time | Precipitation | Snowfall | Snowfall SWE | Snow Depth | Snow SWE | Notes |
|---|---|---|---|---|---|---|---|
| 10/3/2015 | 7:00 AM | 0.04 | M | M | M | M | |
| 10/7/2015 | 7:00 AM | 0.19 | M | M | M | M | |
| 10/21/2015 | 7:00 AM | 0.31 | M | M | M | M | |
| 10/22/2015 | 7:00 AM | 0.81 | M | M | M | M | rain began to fall again at about 5 AM, after a lull overnight. Rain falling at 7 AM observation. Yesterday, the rain was "misty" (small droplets). Currently, larger drops are falling. |
| 10/23/2015 | 7:00 AM | 0.53 | M | M | M | M | |
| 11/27/2015 | 7:00 AM | 0.17 | 3.8 | 0.17 | M | M | |
| 11/28/2015 | 7:00 AM | 0.01 | 0.2 | M | 2.5 | M | |
| 11/30/2015 | 7:00 AM | 0.26 | 3.7 | M | 5.7 | M | |
| 12/13/2015 | 7:00 AM | 0.17 | 1.8 | 0.17 | 1.8 | M | |
| 12/15/2015 | 7:00 AM | 0.48 | 7.8 | 0.48 | 8.0 | 0.55 | snowing lightly at time of observation |
| 12/16/2015 | 7:00 AM | 0.21 | 3.9 | 0.21 | 11.5 | M | |
| 12/26/2015 | 7:00 AM | 0.12 | 2.8 | 0.12 | 2.8 | M | |
| 1/8/2016 | 7:00 AM | 0.14 | 1.5 | 0.14 | M | M | light snow at time of observation 7AM |
| 1/9/2016 | 7:00 AM | 0.08 | 1.5 | M | 2.3 | M | |
| 1/31/2016 | 7:00 AM | 0.11 | 1.6 | M | M | M | |
| 2/1/2016 | 7:00 AM | 0.08 | 0.7 | M | 1.6 | M | |
| 2/2/2016 | 7:00 AM | 0.56 | 8.9 | M | 10.1 | M | |
| 2/3/2016 | 7:00 AM | 0.24 | 3.1 | 0.24 | 9.0 | 0.88 | At observation time, sky is clear tempurature (plus) 13F. |
| 3/8/2016 | 7:00 AM | 0.16 | 0.2 | M | 0.0 | M | On 3/7/16, light rain began 10:45 AM. By 12:15 PM, rain had turned to wet snow. Very large flakes - measured several at over 1 inch across. These large flakes appeared to be created from the aggregation of several smaller wet flakes. Precip ended by 2 PM, and sky turned sunny for a period. |
| 3/18/2016 | 7:00 AM | 0.39 | 5.1 | M | 5.1 | M | Light snow (tiny flakes) at time of observation. Calm wind |
| 3/19/2016 | 7:00 AM | 0.04 | T | M | M | M | |
| 3/23/2016 | 7:00 AM | 0.83 | 4.5 | M | 4.5 | M | Initial 0.07 fell as rain shortly after midnight. By 7AM, 4.5 inches of very wet snow had accumulated. This snow is like "Sierra cement". Snowing lightly at observation. Winds light from N, with an occasional gust |
| 3/24/2016 | 7:00 AM | 1.61 | 16.2 | 1.61 | 18.2 | 2.16 | In my life-long experience in Arapahoe County, this is one of the most dense (meaning: high moisture content) snowfalls I have seen, excepting perhaps May or Sept events that occur in a rain/snow mix. |
| 3/26/2016 | 7:00 AM | 0.11 | 2.0 | M | 9.5 | M | Cold morning at 24F, snowing very lightly at 7AM. Powder snow, much different from the wet snow of 3/23/16. My calculation is: 18 inches to produce 1 inch of liquid. The wet snow on 3/23 held 1 inch liquid in 7 inches of snow. |
| 3/27/2016 | 7:00 AM | 0.01 | 0.1 | M | M | M | |
| 3/30/2016 | 7:00 AM | 0.01 | M | M | M | M | |
| 3/31/2016 | 7:00 AM | 0.09 | 0.5 | M | M | M | Snow fell between 5PM and 9PM, much of it melting as it fell. Accumulated to one half inch. Temp at dawn: 27F |
| 4/1/2016 | 7:00 AM | 0.14 | 1.0 | M | M | M | snow fell on 3/31 during hours before noon, then again from 2PM to 5PM. Some melted as it fell, but I was able to measure 1 inch on my cold board. |
| 4/16/2016 | 7:00 AM | 0.85 | 4.8 | M | M | M | Rain commenced at 9:00 PM. Moderate snowfall at time of observation. Snow is extremely wet. |
| 4/17/2016 | 7:00 AM | 1.64 | 13.6 | M | 17.8 | M | Snowing lightly at 7AM. Liquid precip measurement is suspect. I emptied my tube twice during the 24 hours, but, deeply accumulating snow filled it to overflowing. Some snow was probably not caught. I will melt a core sample later today, but because of the "warm" temps during heavy snowfall on the 16th, I suspect some of the core will have melted away and escaped. |
| 4/18/2016 | 7:00 AM | 0.08 | 1.0 | M | 13.5 | 2.40 | |
| 4/26/2016 | 7:00 AM | 0.03 | M | M | M | M | big lightening display between 8PM and 9PM, but did not deliver any substantial rain. |
| 4/27/2016 | 7:00 AM | 0.09 | M | M | M | M | |
| 4/29/2016 | 7:00 AM | 0.28 | 0.1 | M | M | M | Light snow at 7AM. Calm wind. 35F. |
| 4/30/2016 | 7:00 AM | 0.74 | 3.4 | M | M | M | 33F Very light snow at 7AM. Measured snowfall at 7PM, then 12 hours later at 7 this morning. Total of the two measurements 3.4 inches. But snow never accumulated to that depth due to constant melting during the last 24 hours |
| 5/1/2016 | 7:00 AM | 0.34 | 1.7 | M | 3.5 | M | Snowing, 33F |
| 5/8/2016 | 7:00 AM | 0.17 | M | M | M | M | |
| 5/17/2016 | 7:00 AM | 0.70 | M | M | M | M | Measured in my gauge after being absent from Colorado. Assume it fell on May 17, as reported by others |
| 5/27/2016 | 7:00 AM | 0.28 | M | M | M | M | |
| 6/1/2016 | 7:00 AM | 0.13 | M | M | M | M | |
| 6/7/2016 | 7:00 AM | 1.15 | M | M | M | M | |
| 6/8/2016 | 7:00 AM | 0.40 | M | M | M | M | I was away when the thunderstorm occurred at 5:30 PM. My gauge recorded .40, but I could not observe hail. There were tree leaves on the ground indicating that some hail fell. |
| 6/14/2016 | 7:00 AM | 0.14 | M | M | M | M | |
| 6/21/2016 | 7:00 AM | 0.04 | M | M | M | M | |
| 7/1/2016 | 7:00 AM | 0.21 | M | M | M | M | very light rain at 7 AM observation time |
| 7/2/2016 | 7:00 AM | 0.15 | M | M | M | M | light rain at 7AM. |
| 7/3/2016 | 7:00 AM | 0.05 | M | M | M | M | |
| 7/6/2016 | 7:00 AM | 0.04 | M | M | M | M | |
| 7/29/2016 | 7:00 AM | 0.14 | M | M | M | M | heavy downpour sometime between midnight and 1 am |
| 8/17/2016 | 7:00 AM | 0.04 | M | M | M | M | Light rain, muffled thunder between 8PM and 8:30PM |
| 8/20/2016 | 7:00 AM | 0.11 | M | M | M | M | |
| 8/25/2016 | 7:00 AM | 0.21 | M | M | M | M | rain began at 10AM, continued light and intermittent until 4PM. No thunder. |
| 8/31/2016 | 7:00 AM | 0.70 | M | M | M | M | Rain started at 7PM, continued until 9:PM. CC lightening very frequent. This is the first substantial thunderstorm and rain at this location since June. |
| Start Date | End Date & Time | Duration in Days | Precipitation | Snow Depth | Snow Depth SWE | Notes |
|---|---|---|---|---|---|---|
| 6/22/2016 | 6/30/2016 7:00 AM | 9 | 0.39 | M | M | Out of town for one week. From reports neighbors, there were 3 afternoon rain events. |
| Observation Date | Observation Time | Notes | Largest Stone Size | Average Stone Size | Smallest Stone Size | Stone Consistency | Duration Minutes | Durration Accuracy | Damage | Timing | More Rain than Hail | Hail Started | Largest Hail Started | Angle of Impact | Number of Stones on Pad | Distance Between Stones on Pad | Depth of Stones on Ground |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6/6/2016 | 4:50 PM | Hail began to fall prior to raindrops, hailing continuously for 15 min, during which time rain increased intensity, becoming torrential at times. About 20 minutes of rain only, then a second round of hail in a brief episode. Some tougher trees show little effect, but more tender vegetation severely shredded. | 3/8" | 1/4" Pea Size | 1/4" Pea Size | Hard|White Ice | 15 | 2min | minor leaf damage.shredded leaves | Continuous | True | Before rain | After smaller hail | 30-40 |