| 12/3/2025 | CO-EP-333 | Colorado Springs 5.0 ENE |
0.07
| Very light snow at obs time. |
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| 12/3/2025 | CO-DN-329 | Denver 5.1 SSE |
0.14
| Snow overnight. Still snowing during observation. |
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| 12/3/2025 | CO-LN-57 | Hugo 0.3 SSW |
T
| Light snow just started. No accumulation as of yet. |
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| 12/3/2025 | CO-LR-1013 | Loveland 1.7 SW |
0.32
| updated with melted gauge catch. |
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| 12/3/2025 | CO-JK-36 | Walden 0.2 S |
0.11
| Still lightly snowing |
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| 12/3/2025 | CO-JF-457 | Arvada 3.5 WNW |
0.39
| Snowing about 0.3-0.5” and hour at time of observation. Storm total will include tomorrow’s observation. |
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| 12/3/2025 | CO-LR-40 | Loveland 1.5 N |
0.32
| Nice mild day yesterday with mostly sunny skies for much of the day. Mostly clear early in the evening, then some clouds drifted in. Snow after midnight, continuing this morning. Moderate snow and chilly this morning. High yesterday 48°, low 19°. Currently moderate snow and 28°. |
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| 12/3/2025 | CO-YU-68 | Wray 4.2 NNE |
0.00
| Sunny, not as cold |
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| 12/3/2025 | CO-MT-64 | Montrose 4.5 SSE |
0.14
| Snow started again about 11 AM. chilly 25 this AM.My amounts don't seem to be right. Snowing lightly again at 8AM. I may have mixed up Dec 1 and 2 but then again
maybe I didn't. If I did, then need to swap out. i know I shoveled snow on Monday and today. sorry. |
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| 12/3/2025 | CO-PU-144 | Pueblo 6.3 SSW |
0.01
| -SN at obs time, increasing intensity beyond obs time. |
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| 12/3/2025 | CO-DN-348 | Denver 1.7 NNE |
0.17
| snow is still accumulating |
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| 12/3/2025 | CO-JF-331 | Golden 12.5 NW |
0.27
| 18F moderate snow, calm |
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| 12/3/2025 | CO-JF-72 | Broomfield 2.3 SSW |
0.36
| Still snowing at 0659 obsv time. |
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| 12/3/2025 | CO-AD-100 | Thornton 2.1 N |
0.35
| Thi 50 @ 13:55
….. @ Obs: 28, light snow continues
// Tuesday: Sunny morning, cloud buildup noticed ~ 12:15, with variable wind mostly NE winds to 14 mph / Cloudy after 13:00. / 22:25 light rain & snow mix, T=36F. / 22:59, snow intensity increasing. / Snowed all night.
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| 12/3/2025 | CO-AD-123 | Brighton 4.0 WNW |
0.22
| Precipitation started as rain |
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| 12/3/2025 | CO-AD-127 | Aurora 4.2 NNW |
0.19
| 1/4 inch layer of slush under the snow included in snowpack depth. A separate core was taken to determine 24 hour SWE (which also had 1/4 inch layer of slush underneath) |
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| 12/3/2025 | CO-AD-153 | Westminster 1.6 NE |
0.26
| Light snow still this morning |
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| 12/3/2025 | CO-AR-262 | Aurora 2.1 W |
0.19
| Very light flurries started just before 9:30PM. Snowing, no wind & 27F at 7AM today. |
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| 12/3/2025 | CO-AR-381 | Bennett 10.8 SSW |
0.09
| @0700: light snow, fog, visibility ~2mi. 25 deg F, Wind 5-10 mph from NE. Very minor drifting. |
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| 12/3/2025 | CO-AR-415 | Centennial 3.9 ESE |
0.14
| From snow melt |
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| 12/3/2025 | CO-AU-37 | Pagosa Springs 5.8 SSE |
0.10
| Previous days’ snow had melted off so new snow and total snow on the ground are the same. 0.5” at 20:00 12/2/25. Snowing lightly at observation time! |
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| 12/3/2025 | CO-BN-34 | Las Animas 0.3 ESE |
T
| It began misting/snowing a few, minutes before observation |
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| 12/3/2025 | CO-BO-2 | Broomfield 1.2 NE |
0.27
| Used melted value from core sample for gauge catch. |
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| 12/3/2025 | CO-BO-30 | Boulder 1.9 SE |
0.42
| R- began falling with the temperature at 34°, probably before 2400 MDT 02 Dec 2025. My rain gauge did not record an amount. R- changed to S- at 0125 MDT 03 Dec, with temperature at 33.5°. S- continued thru obs time at 0700 MDT, with visibility at Boulder Airport ranging from 3/4 to 2 miles. At 0700 MDT, 29° (minimum so far), S-1, snow depth 4.6” on snowboard but 6.0” on lawn
with a water content of .42, of which perhaps .01" or .02" fell as rain.
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| 12/3/2025 | CO-BO-57 | Nederland 5.8 E |
0.31
| 21º; NE to 5mph; overcast and foggy, with moderate snow falling. Gauge catch yielded 0.27" SWE. |
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| 12/3/2025 | CO-BO-67 | Boulder 4.7 E |
0.37
| Well, that's more like it. It clouded up by late afternoon, then the temperature jumped about 5 degrees to near 40 at 2120 with gusty S winds. There was a little precip around that time that might have been R- or mixed, becoming intermittent S- by around 2300. Steady accumulating snow by 0130. At 0700 S-, calm winds and 28 (also the low). |
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| 12/3/2025 | CO-BO-146 | Lyons 0.3 NNE |
0.62
| Snow overnight, continuing at observation time. Approx 9.8:1 SLR. 29F. |
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| 12/3/2025 | CO-BO-202 | Ward 4.6 NE |
0.40
| Corrected totals for last evening's snow (0.02/0.2") that I had left out in the summation(s). Current temperature: 15F and light snow still falling. |
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| 12/3/2025 | CO-BO-286 | Boulder 3.5 S |
0.44
| Snow depth is an estimate of what’s on the ground (around 6”) and fence rail (5”) |
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| 12/3/2025 | CO-BO-290 | Lafayette 2.3 NW |
0.38
| Temperature range: 24-48 |
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| 12/3/2025 | CO-BO-322 | Nederland 0.4 WNW |
0.20
| Snow began last night about 11pm |
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| 12/3/2025 | CO-BO-380 | Boulder 2.0 W |
0.37
| First real snow of the season! |
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| 12/3/2025 | CO-BO-435 | Longmont 3.0 SW |
0.38
| Yesterday reached about 55 degrees so surprising how much snow was on the ground this morning. Not snowing around 230 am so likely heavy between 1230 and 2 am. Began to snow around 750 am this morning. Coming down pretty well. Canceling my expert who was to present a program on bats today but moisture is terrific. |
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| 12/3/2025 | CO-BO-437 | Boulder 2.1 W |
0.40
| Snowed overnight. Currently snowing lightly and it’s 27°F. |
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| 12/3/2025 | CO-BO-490 | Boulder 1.5 WNW |
0.39
| Snowing pretty heavily at 7 am |
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| 12/3/2025 | CO-BO-583 | Boulder 2.9 S |
0.44
| -S @ obs time |
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| 12/3/2025 | CO-BO-593 | Longmont 2.3 ENE |
0.50
| High water content for this snow storm. |
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| 12/3/2025 | CO-BO-596 | Boulder 1.9 SE |
0.40
| 17F. Lightly snowing. About 5” in the gauge about 4.3” on the snowboard. Birds singing. |
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| 12/3/2025 | CO-BO-607 | Longmont 2.2 NE |
0.39
| Snowboard temperature at the beginning of snowfall was well above freezing, so a significant layer of ice formed on the board before snow began to accumulate. I estimate about 0.2 inches of ice. For that reason the core snowfall SWE is lower than it should be and lower than the catch. Moderately heavy snowfall continued before, during and after the 7:00 am measurements. There was no snow on the ground before this storm event so no snowpack measurement was taken. |
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| 12/3/2025 | CO-BO-613 | Boulder 7.4 NNW |
0.57
| Snow! 5.5 measured no snow board, yet. Area measured swept clean, snow still falling. |
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| 12/3/2025 | CO-BR-54 | Broomfield 2.4 ESE |
0.27
| Periods of rain and rain/snow mix around 10–10:30pm before switching to all snow. Currently still snowing steadily at 7am. |
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| 12/3/2025 | CO-CF-65 | Buena Vista 2.0 ESE |
0.06
| Snowing lightly, winds calm, barometer rising and 26 degrees F at report time. |
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| 12/3/2025 | CO-CC-2 | Evergreen 5 W |
0.31
| Snowing light to moderate, 22°, E@3mph, fox tracks near the snowboard. |
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| 12/3/2025 | CO-CC-7 | Idaho Springs 4.7 SSE |
0.49
| Finally!!!! |
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| 12/3/2025 | CO-CS-31 | Fort Garland 13.3 E |
0.03
| Light snow began about 5:00 AM |
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| 12/3/2025 | CO-CS-35 | Fort Garland 7.0 NE |
0.05
| moderate snow |
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| 12/3/2025 | CO-CR-8 | Crowley 0.2 E |
0.00
| It has been lightly spitting snow for last couple of hours, but rain gauge still dry. |
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| 12/3/2025 | CO-CR-18 | Ordway 3.5 W |
T
| Nice Tuesday weather. Clouds moved in late afternoon. NNE breeze this morning. Flakes in the air. Just a few patches of the last snow remain. No frost. Will be a beautiful day if the wind doesn't blow. |
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| 12/3/2025 | CO-DN-177 | Denver 2.0 ESE |
NA
| Do not have moisture. Wife dumped the melted water before I could measure |
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| 12/3/2025 | CO-DG-176 | Highlands Ranch 0.6 SSE |
0.20
| A few flakes at 6:30 p.m. Currently snowing. Snow from the north. About 2 inches on ground at 7 a.m, |
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