| 12/4/2025 | CO-KC-80 | Burlington 8.4 NNE |
0.10
| Melted as it fell until temps dropped. |
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| 12/4/2025 | CO-DN-329 | Denver 5.1 SSE |
0.27
| Light snow all day, ending at 01Z (6p). Storm total 5.6”. Measurement was taken at the end of snowfall last night ~02Z (~7p). |
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| 12/4/2025 | CO-DG-218 | The Pinery 1.2 ESE |
0.28
| 17 degrees, clear with a bright- almost -full moon shining on the new snow. The snow looks blue this morning! |
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| 12/4/2025 | CO-JF-331 | Golden 12.5 NW |
0.20
| 14F clear and windy with blowing snow. Storm Total 9.2in with 0.52in SWE |
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| 12/4/2025 | CO-LR-40 | Loveland 1.5 N |
0.11
| Much colder day yesterday with light to moderate snow for the morning hours, tapering off after noon. Flurries for a bit mid afternoon. Some clearing in the evening. Clear and frigid this morning. High yesterday 33°, low 1°. Currently clear and 1°. |
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| 12/4/2025 | CO-PU-144 | Pueblo 6.3 SSW |
0.47
| 7.4" storm total, all falling on calendar day 12/3. |
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| 12/4/2025 | CO-WE-424 | Greeley 1.7 ESE |
0.01
| very light snow yesterday afternoon. |
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| 12/4/2025 | CO-YU-68 | Wray 4.2 NNE |
T
| Just a T of snow overnight. |
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| 12/4/2025 | CO-JF-72 | Broomfield 2.3 SSW |
0.23
| Snow ended at approximately 2120. 10F and not snowing at 0601 obsv time. Exactly 3.0” new containing exactly 0.25” SWE . |
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| 12/4/2025 | CO-MT-64 | Montrose 4.5 SSE |
0.15
| Very light snow all day, quite a bit melted as it landed. Not much new accumulation. Chilly day. Looks to be still cloudy this AM. 25 at current time. A lot of the snow melted as it was landing. Amounts could be off some. Really surprised to snow storm last that long. |
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| 12/4/2025 | CO-WE-606 | Milliken 1.0 ENE |
0.09
| 24 hr Max/Min: 32/4 // Light-moderate snow stopped near Noon. Off/on snow showers persisted throughout the afternoon stopping @ sunset. Ice fog started mid-late evening ~2100-30L. // |
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| 12/4/2025 | CO-DN-348 | Denver 1.7 NNE |
0.20
| continuation from snow from previous day |
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| 12/4/2025 | CO-LR-1262 | Fort Collins 1.9 SW |
0.04
| Additional, intermittent light snow fell throughout the day yesterday, with small periods of sunshine and above freezing temps. This created some melting and a thin layer of ice under the snowpack, which made full collection of new snow and total snowpack difficult to measure. |
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| 12/4/2025 | CO-AR-413 | Denver 5.0 SSE |
0.09
| Additional snowfall plus the snowfall from the previous day totals 3.5”. Gauge catch precipitation just in the last 24 hours is .09”. |
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| 12/4/2025 | CO-AD-87 | Brighton 1.7 ESE |
0.00
| we did receive snow after yesterday's measurements that i did, but there was not enough accumulation to measure partly because it was falling during daylight. |
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| 12/4/2025 | CO-AD-100 | Thornton 2.1 N |
0.34
| Thi 30 @ 11:52.
….. @ Obs: 14.
// Wed: Light snow fall continues from previous observation / @ 11:55, a brisk NE 12 mph breeze, after that snow flakes were smaller with a slight increase in intensity. / @ 14:42, very few light flakes, may be ending.
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| 12/4/2025 | CO-AD-120 | Brighton 2.1 NNW |
0.07
| Snow from yesterday. |
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| 12/4/2025 | CO-AR-262 | Aurora 2.1 W |
0.26
| Snow all day, finished by 8PM. High temp in the 20s. Clear sky, no wind & 18F at 7AM today. |
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| 12/4/2025 | CO-AR-421 | Littleton 1.4 ENE |
0.29
| Snow from 7AM yesterday until around 7PM |
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| 12/4/2025 | CO-AU-37 | Pagosa Springs 5.8 SSE |
0.34
| Snowed all day yesterday. Stopped after dark. |
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| 12/4/2025 | CO-BN-34 | Las Animas 0.3 ESE |
0.12
| Snow most of the day. Did not stick to roads but still got good coverage on other spots. Angle of snowfall made it difficult for gauge to catch some of it |
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| 12/4/2025 | CO-BO-2 | Broomfield 1.2 NE |
0.27
| Used core sample rather than gauge catch for better precipitation measurement. |
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| 12/4/2025 | CO-BO-8 | Lafayette 0.4 WSW |
0.19
| S- through morning, S-- with little accum after 1400. Sun dmly vsbl at times after 1445. Partial clearing after 20L, clear by 0230. 34F/29F/31F/22F |
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| 12/4/2025 | CO-BO-57 | Nederland 5.8 E |
0.22
| 20º; WNW to 16mph; clear; frost. Gaug catch yielded 0.21" SWE. |
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| 12/4/2025 | CO-BO-67 | Boulder 4.7 E |
0.27
| Steady S- all morning with 2.3/0.14" 0700-1200. Then the best band of the day passed over the next hour or so with S/ocnl S+, dropping almost 2" of snow. S-- from ~1430-1630, then it cleared overnight with a low of 6.7 at 0715. 2-day storm total of 8.4"/0.64 |
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| 12/4/2025 | CO-BO-143 | Longmont 2.1 N |
0.14
| Storm totals: 0.53" pcpn; 5.5" snowfall. Min temp and current 2.1°F. |
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| 12/4/2025 | CO-BO-220 | Boulder 4.7 ENE |
0.25
| Snowing throughout the day, noticed to be not snowing at 6 PM. Rough ice on the snowboard, so I was unable to make a clean core; lost a little stuck with the ice. 6-8 inches on the various non-concrete surfaces of the yard; 2-4 on hardscape. |
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| 12/4/2025 | CO-BO-286 | Boulder 3.5 S |
0.33
| Measured 24-hr snow on fence rail (3.2"). which is almost always low compared to other flat surfaces so pushed up to 3.4".
Frost spicules on top of new snow - should have taken a pic. Temp 12F at observation time- that was the low snce midnight at my house. |
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| 12/4/2025 | CO-BO-380 | Boulder 2.0 W |
0.17
| Unable to measure new snow but it was at least 2-3 inches. |
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| 12/4/2025 | CO-BO-435 | Longmont 3.0 SW |
0.13
| Began to snow yesterday around 650 am and stopped at just after 1 pm. Snow was wet and heavy bending many trees limbs etc. Birds - juncos, black capped chickadees, etc. Overcast, slightly foggy so mountain could not be seen. Went to local, very popular open space and I was the only one trekking there. Serene. This am 12 degrees at 620 am. |
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| 12/4/2025 | CO-BO-581 | Longmont 2.8 E |
0.16
| Storm total 5.7 inches snow, 0.48 inches water equivalent |
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| 12/4/2025 | CO-BO-596 | Boulder 1.9 SE |
0.36
| 10F. Clear. Calm. Birds out. Outer tube covered with frost. About 4” additional snowfall in gauge.
7” total snowpack on snowboard (including day before).
100% of yard covered with snow. |
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| 12/4/2025 | CO-BO-607 | Longmont 2.2 NE |
0.12
| Snow continued until about 4:00 pm heavy at times. Temperatures in the low 30s caused snowboard depth measurement to be lower due to compaction. Snowpack measurement not needed. |
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| 12/4/2025 | CO-BO-613 | Boulder 7.4 NNW |
0.17
| light snow all day. Snow event total for two days 7.8". |
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| 12/4/2025 | CO-BR-32 | Broomfield 3.2 NNE |
0.20
| Storm total snowfall: 6.6"; storm total liquid: 0.53". |
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| 12/4/2025 | CO-BR-54 | Broomfield 2.4 ESE |
0.18
| Storm total 6.0” snow. Took additional measurements at 3pm & 8pm (after storm end). |
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| 12/4/2025 | CO-CF-55 | Salida 1.8 SSW |
0.19
| 20+mph winds most of the day |
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| 12/4/2025 | CO-CF-65 | Buena Vista 2.0 ESE |
0.14
| Clear sky, moderate winds, barometer rising and -1 degree F at report time. |
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| 12/4/2025 | CO-CS-31 | Fort Garland 13.3 E |
0.72
| Wind gusts to 36.9 MPH caused drifting. |
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| 12/4/2025 | CO-CS-32 | Fort Garland 12.9 ENE |
0.71
| Top winds gusts 40 mph |
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| 12/4/2025 | CO-CS-35 | Fort Garland 7.0 NE |
0.72
| Significant blowing and drifting. |
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| 12/4/2025 | CO-CR-18 | Ordway 3.5 W |
0.27
| Snow through Wednesday. Ended during the night. Heavy fog this morning. Calm-thank goodness. Snow melted some as fell. Guessing the total to be closer to 4", but the average of 3 spots is 2.67" |
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| 12/4/2025 | CO-DN-177 | Denver 2.0 ESE |
NA
| {EDIT: Observer reported 2.40 for new gauge catch. This is high and it appears snowfall was entered by mistake. Changed report of 2.40 to NA until observer can be contacted. CoCoSTAFF DNT} |
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| 12/4/2025 | CO-DG-176 | Highlands Ranch 0.6 SSE |
0.29
| Snow fell yesterday until dark. Clear skies this morning with beautiful north west moon set. About 4 inches on the ground. Roads snow packed. |
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| 12/4/2025 | CO-DG-250 | Highlands Ranch 3.0 WSW |
0.24
| Snowing most of day until early evening. Currently clear, breezy, 18 degF, |
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| 12/4/2025 | CO-DG-292 | Parker 3.5 WNW |
0.46
| light snowfall all day long, temps hanging around 27-28 degrees
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| 12/4/2025 | CO-DG-347 | Castle Rock 0.8 N |
0.16
| Light snow throughout the entire day, ending around 6pm. Storm total 6.5 inches. Some settling during the day due to enough solar insolation causing a measured snowpack of 5 inches this morning. |
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| 12/4/2025 | CO-DG-361 | Highlands Ranch 3.2 SW |
0.36
| Snowed continued throughout the day yesterday, stopping around 8:30pm. Bright and sunny this morning. Snow total is around 4 inches. |
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| 12/4/2025 | CO-DG-376 | Lone Tree 1.8 NNW |
0.23
| Cold and clear at observation time. Temp 11 Dew Point 9 Humidity 83%. Light breeze from SSE overnight. 24 hr high 30 low 11. Light snowfall continued through the day and stopped around 19:30. |
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| 12/4/2025 | CO-EG-21 | Vail 0.9 WNW |
0.11
| Snow began to fall early yesterday morning and it snowed much of the morning then off and on all afternoon. Driving conditions were slippery with poor visibility. The measurable snow ended late in the afternoon. A few flakes fell during the night or early this morning. Currently we have a cloudy sky and 13 degrees with an occasional flake of snow falling. Our high temperature yesterday was in the 20's. |
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