Station Overview Station Location
Station Number CO-BO-491 Latitude 40.02958
Station Name Boulder 1.8 W Longitude -105.28524
County Boulder Elevation (ft) 5427



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 19 1.33 0.50 23 0.50 20 0.00 3 1 4 0 3.9 2 3
Nov 19 1.04 0.26 19 0.26 13 0.00 6 0 2 1 3.9 1 5
Dec 19 0.80 1.55 30 0.29 27 1.26 3 1 4 2 3.7 3 8
Jan 20 0.63 0.00 27 0.00 27 0.00 0 0 0 1 0.0 0 0
Feb 20 0.66 1.91 23 1.91 23 0.00 0 0 10 0 28.6 9 17
March 20 1.85 2.77 31 2.77 31 0.00 0 0 8 3 10.5 5 8
April 20 2.33 2.71 28 2.71 28 0.00 0 0 8 1 20.6 3 7
May 20 2.76 1.84 29 1.84 29 0.00 0 0 9 4 0.0 0 0
June 20 2.55 2.18 26 2.18 26 0.00 0 0 9 1 0.0 0 0
July 20 1.67 0.29 30 0.29 30 0.00 0 0 8 3 0.0 0 0
Aug 20 1.88 0.97 30 0.97 30 0.00 0 0 10 3 0.0 0 0
Sept 20 1.45 1.75 29 1.75 29 0.00 0 0 5 1 0.0 0 1
Water Year Totals: 18.95" 16.73" 325 days 15.47" 313 1.26" 12 days 2 77 days 20 days 71.2" 23 days 49 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
10/1/2019 0.06
10/2/2019 0.38
10/3/2019 0.01
10/4/2019 0.00
10/5/2019
10/6/2019 0.00
10/7/2019 0.00
10/8/2019 0.00
10/9/2019 0.00
10/10/2019 M
10/11/2019 0.05
10/12/2019 0.00
10/13/2019 0.00
10/14/2019 0.00
10/15/2019 0.00
10/16/2019 0.00
10/17/2019 0.00
10/18/2019 0.00
10/19/2019 0.00
10/20/2019 0.00
10/21/2019 0.00
10/22/2019 M
10/23/2019 M
10/24/2019 M
10/25/2019 M
10/26/2019 M
10/27/2019 M
10/28/2019 M **
10/29/2019 M **
10/30/2019 M M
10/31/2019 0.00
11/1/2019 0.00
11/2/2019 0.00
11/3/2019 0.00
11/4/2019 0.00
11/5/2019 0.00
11/6/2019 0.00
11/7/2019 0.11
11/8/2019 0.00
11/9/2019 0.00
11/10/2019 0.00
11/11/2019 0.15
11/12/2019 T
11/13/2019 0.00
11/14/2019 M
11/15/2019 M
11/16/2019 M
11/17/2019 M
11/18/2019 M
11/19/2019 M
11/20/2019 M
11/21/2019 M
11/22/2019 M
11/23/2019 M
11/24/2019 M
11/25/2019 **
11/26/2019 **
11/27/2019 **
11/28/2019 **
11/29/2019 **
11/30/2019 **
12/1/2019 **
12/2/2019 **
12/3/2019 0.00 1.26
12/4/2019 0.00
12/5/2019 0.00
12/6/2019 0.10
12/7/2019 0.00
12/8/2019 0.00
12/9/2019 M
12/10/2019 M
12/11/2019 0.00
12/12/2019 0.00
12/13/2019 0.00
12/14/2019 T
12/15/2019 0.01
12/16/2019 0.00
12/17/2019 0.00
12/18/2019 0.00
12/19/2019 0.00
12/20/2019 0.00
12/21/2019 0.00
12/22/2019 0.00
12/23/2019 0.00
12/24/2019 0.00
12/25/2019 0.00
12/26/2019 T
12/27/2019 0.00
12/28/2019 0.16
12/29/2019 0.02
12/30/2019 0.00
12/31/2019 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2020 0.00
1/2/2020 0.00
1/3/2020 0.00
1/4/2020 0.00
1/5/2020 0.00
1/6/2020 0.00
1/7/2020 M
1/8/2020 M
1/9/2020 M
1/10/2020 0.00
1/11/2020 0.00
1/12/2020 0.00
1/13/2020 0.00
1/14/2020 0.00
1/15/2020 0.00
1/16/2020 0.00
1/17/2020 0.00
1/18/2020 T
1/19/2020 0.00
1/20/2020 0.00
1/21/2020 0.00
1/22/2020 0.00
1/23/2020 0.00
1/24/2020 0.00
1/25/2020 0.00
1/26/2020 0.00
1/27/2020 0.00
1/28/2020 0.00
1/29/2020 0.00
1/30/2020 0.00
1/31/2020 M
2/1/2020 0.00
2/2/2020 0.00
2/3/2020 0.09
2/4/2020 0.45
2/5/2020 0.02
2/6/2020 0.00
2/7/2020 0.23
2/8/2020 0.10
2/9/2020 0.16
2/10/2020 0.10
2/11/2020 0.45
2/12/2020 0.00
2/13/2020 0.22
2/14/2020 0.00
2/15/2020 0.00
2/16/2020 0.00
2/17/2020 0.00
2/18/2020 0.09
2/19/2020 0.00
2/20/2020
2/21/2020 M
2/22/2020 M
2/23/2020 M
2/24/2020 M
2/25/2020 M
2/26/2020 0.00
2/27/2020 0.00
2/28/2020 0.00
2/29/2020 0.00
3/1/2020 0.00
3/2/2020 0.29
3/3/2020 0.00
3/4/2020 0.00
3/5/2020 0.00
3/6/2020 0.00
3/7/2020 0.00
3/8/2020 0.00
3/9/2020 0.14
3/10/2020 0.00
3/11/2020 0.00
3/12/2020 0.00
3/13/2020 T
3/14/2020 0.09
3/15/2020 0.00
3/16/2020 0.00
3/17/2020 0.03
3/18/2020 0.00
3/19/2020 0.40
3/20/2020 1.40
3/21/2020 0.01
3/22/2020 0.00
3/23/2020 0.00
3/24/2020 0.00
3/25/2020 0.00
3/26/2020 0.00
3/27/2020 T
3/28/2020 0.41
3/29/2020 0.00
3/30/2020 0.00
3/31/2020 T
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.00
4/2/2020 0.10
4/3/2020 0.16
4/4/2020 0.00
4/5/2020 0.00
4/6/2020 0.00
4/7/2020 0.00
4/8/2020 0.00
4/9/2020 0.00
4/10/2020 0.00
4/11/2020 0.00
4/12/2020 0.46
4/13/2020 0.54
4/14/2020 M
4/15/2020 0.00
4/16/2020 0.95
4/17/2020 0.43
4/18/2020 0.00
4/19/2020 T
4/20/2020 0.00
4/21/2020 0.00
4/22/2020 0.00
4/23/2020 M
4/24/2020 0.01
4/25/2020 0.06
4/26/2020 0.00
4/27/2020 0.00
4/28/2020 0.00
4/29/2020 0.00
4/30/2020 0.00
5/1/2020 T
5/2/2020 0.00
5/3/2020 0.11
5/4/2020 0.06
5/5/2020
5/6/2020 0.00
5/7/2020 0.00
5/8/2020 0.04
5/9/2020 0.00
5/10/2020 0.00
5/11/2020 0.00
5/12/2020 0.13
5/13/2020 0.00
5/14/2020 0.00
5/15/2020 0.07
5/16/2020 0.17
5/17/2020 0.00
5/18/2020 0.00
5/19/2020 0.00
5/20/2020 T
5/21/2020 0.00
5/22/2020 0.00
5/23/2020 0.00
5/24/2020 T
5/25/2020 0.99
5/26/2020 0.00
5/27/2020 0.00
5/28/2020 0.24
5/29/2020 T
5/30/2020
5/31/2020 0.03
6/1/2020 0.01
6/2/2020 0.00
6/3/2020 0.03
6/4/2020 0.00
6/5/2020 M
6/6/2020 T
6/7/2020 0.11
6/8/2020
6/9/2020 0.22
6/10/2020 0.00
6/11/2020 0.00
6/12/2020 0.00
6/13/2020
6/14/2020 0.27
6/15/2020 0.00
6/16/2020 0.00
6/17/2020 0.00
6/18/2020 0.00
6/19/2020 0.86
6/20/2020 0.12
6/21/2020 0.00
6/22/2020 M
6/23/2020 0.00
6/24/2020 0.00
6/25/2020 0.00
6/26/2020 0.00
6/27/2020 0.49
6/28/2020 0.00
6/29/2020 0.07
6/30/2020 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2020 0.02
7/2/2020 M
7/3/2020 0.00
7/4/2020 0.00
7/5/2020 0.00
7/6/2020 0.01
7/7/2020 0.00
7/8/2020 0.00
7/9/2020 0.00
7/10/2020 0.00
7/11/2020 0.00
7/12/2020 0.00
7/13/2020 0.00
7/14/2020 0.02
7/15/2020 0.02
7/16/2020 0.00
7/17/2020 0.00
7/18/2020 0.00
7/19/2020 T
7/20/2020 0.00
7/21/2020 0.00
7/22/2020 0.00
7/23/2020 T
7/24/2020 0.00
7/25/2020 0.13
7/26/2020 0.07
7/27/2020 0.01
7/28/2020 0.00
7/29/2020 0.01
7/30/2020 0.00
7/31/2020 T
8/1/2020 0.16
8/2/2020 0.01
8/3/2020 0.00
8/4/2020 0.01
8/5/2020 0.07
8/6/2020 0.13
8/7/2020 0.00
8/8/2020 0.00
8/9/2020 0.00
8/10/2020 0.00
8/11/2020 T
8/12/2020 0.00
8/13/2020 T
8/14/2020 0.00
8/15/2020 0.00
8/16/2020 0.00
8/17/2020 0.00
8/18/2020 0.00
8/19/2020 0.00
8/20/2020 T
8/21/2020 0.02
8/22/2020 0.00
8/23/2020 0.00
8/24/2020 0.00
8/25/2020 0.00
8/26/2020
8/27/2020 0.01
8/28/2020 0.50
8/29/2020 0.05
8/30/2020 0.01
8/31/2020 0.00
9/1/2020 0.13
9/2/2020 0.00
9/3/2020 0.00
9/4/2020 0.00
9/5/2020 0.00
9/6/2020 0.00
9/7/2020 0.00
9/8/2020 0.41
9/9/2020 1.08
9/10/2020 0.12
9/11/2020 0.00
9/12/2020 0.00
9/13/2020 0.00
9/14/2020 0.00
9/15/2020 0.00
9/16/2020 0.00
9/17/2020 0.00
9/18/2020 0.00
9/19/2020 0.00
9/20/2020 0.00
9/21/2020 T
9/22/2020 0.00
9/23/2020 0.00
9/24/2020 0.00
9/25/2020 0.00
9/26/2020 0.00
9/27/2020
9/28/2020 0.01
9/29/2020 0.00
9/30/2020 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2019 8:00 AM 0.06 0.0 M M M It continues to drizzle lightly. The foothills are shrouded in mist or fog.
10/2/2019 8:00 AM 0.38 0.0 M M M It's still raining a very light mist. Sky is consistently overcast.
10/3/2019 8:00 AM 0.01 0.0 M M M Mostly sunny sky, damp cold
10/4/2019 8:00 AM 0.00 0.0 M M M There was condensation on the gauge but no accumulated water in it.
10/6/2019 8:00 AM 0.00 0.0 M M M
10/7/2019 8:00 AM 0.00 0.0 M M M
10/8/2019 8:00 AM 0.00 0.0 M M M
10/9/2019 8:00 AM 0.00 0.0 M M M
10/10/2019 8:30 AM M 3.2 0.19 4.5 0.16 I don't know when precipitation started but did see at 9:45pm that there was light precip, sleet or sleepy rain. I forgot to take off the funnel on rain gauge so have an estimated precip amount by adding melted snow and ice in funnel plus ice in measuring tube, total = 0.39". New snow fall (from snow baord) recorded does not take into account a later if ice on the board below the snow. It's still snowing and 20°F, under consistently grey sky.
10/11/2019 8:40 AM 0.05 0.7 0.08 4.3 0.27 23°F, clear sky, calm. Snow melted yesterday from pavement. Tree branches, all with leaves, are bent under weight of snow.
10/12/2019 8:30 AM 0.00 0.0 M T M Most of the snow has melted, a few small spots in grassy areas remains. Cd and clear cloudless sky.
10/13/2019 8:00 AM 0.00 0.0 M M M
10/14/2019 8:00 AM 0.00 0.0 M M M
10/15/2019 8:00 AM 0.00 0.0 M M M
10/16/2019 8:00 AM 0.00 0.0 M M M
10/17/2019 8:00 AM 0.00 0.0 M M M
10/18/2019 8:30 AM 0.00 0.0 M M M
10/19/2019 8:00 AM 0.00 0.0 M M M
10/20/2019 8:30 AM 0.00 0.0 M M M
10/21/2019 8:30 AM 0.00 0.0 M M M
10/22/2019 8:30 AM M M M M M
10/23/2019 8:30 AM M M M M M
10/24/2019 8:30 AM M M M M M
10/25/2019 8:30 AM M M M M M
10/26/2019 8:30 AM M M M M M
10/27/2019 8:30 AM M M M M M
10/28/2019 8:30 AM M M M M M
10/29/2019 8:30 AM M M M M M
10/30/2019 8:30 AM M M M M M
10/31/2019 8:30 AM 0.00 0.0 M 5.7 0.61
11/1/2019 8:30 AM 0.00 0.0 M M M
11/2/2019 8:30 AM 0.00 0.0 M 3.5 0.64 Snow on the ground is hard, icy. All non paved areas of the yard are still covered in snow.
11/3/2019 8:30 AM 0.00 0.0 M 1.5 0.50 Most of yard is still covered by snow with small areas uncovered. Snow depth in a we'll covered area is 3", melted .50". Numbers reported are averages.
11/4/2019 8:30 AM 0.00 0.0 M M M
11/5/2019 8:30 AM 0.00 0.0 M 0.8 0.11 50% of the ground remains covered by snow. At a deeper area depth was 3.3", melted .23".
11/6/2019 8:30 AM 0.00 0.0 M M M
11/7/2019 8:30 AM 0.11 0.0 M T M Ice covers most hard surfaces except sidewalk which is mostly dry. On the plastic outdoor furniture ice varies from about 1/16" to almost 1/8" thick, with linear thick areas that look like they could be from crystal formation. Leaves are coated in ice less than 1/16" thick. Melting ice drips off leaves. Grass is also coated with ice. Ice thicknesses observed are from eye estimation, not actual measurements. Small patches of snow remain where there is deep shade.
11/8/2019 8:30 AM 0.00 0.0 M T M There are small patches of snow, smaller than yesterday. Heavy frost on grass and leaves.
11/9/2019 8:30 AM 0.00 0.0 M 0.0 M
11/10/2019 8:30 AM 0.00 0.0 M 0.0 M
11/11/2019 8:30 AM 0.15 3.9 0.10 5.1 0.08 Gauge is encrusted with thin layer of pebble textured ice. Snow board is also ice crusted. Leaves on trees are coated with 1/32" thick ice. Temp measures 10°F. Accumulated snow is light and fluffy with distinct snow flake crystals and some small white pellets. Snow continues to fall drifting gently to ground in a Westerly slant.
11/12/2019 8:30 AM T T T 3.1 0.07 Snow board had thin layer of snow, approximately 1mm thick.
11/13/2019 8:30 AM 0.00 0.0 M 0.0 M
11/14/2019 8:00 AM M M M M M
11/15/2019 8:00 AM M M M M M
11/16/2019 8:00 AM M M M M M
11/17/2019 8:00 AM M M M M M
11/18/2019 8:00 AM M M M M M
11/19/2019 8:00 AM M M M M M
11/20/2019 8:00 AM M M M M M
11/21/2019 8:00 AM M M M M M
11/22/2019 8:00 AM M M M M M
11/23/2019 8:00 AM M M M M M
11/24/2019 8:00 AM M M M M M
12/3/2019 8:30 AM 0.00 0.0 M 7.5 1.32
12/4/2019 8:30 AM 0.00 0.0 M 5.7 1.08
12/5/2019 8:30 AM 0.00 0.0 M M M
12/6/2019 8:30 AM 0.10 M M 4.7 1.04 Gauge is encrusted inside and out with beads of ice and small crystals. Precip in gauge was ice, no snow. Forgot to put out the snow board.
12/7/2019 8:30 AM 0.00 0.0 M M M
12/8/2019 8:30 AM 0.00 0.0 M 1.0 0.36 Snow covers about half the lawn and measures 4.5" deep at the center. Measurements entered below are averages, if snow covered the whole lawn.
12/9/2019 8:30 AM M M M M M
12/10/2019 8:30 AM M 0.0 M 1.0 0.33 Snow now covers 1/3 or less of lawn, depth 3.1" at center of snow field.
12/11/2019 8:00 AM 0.00 0.0 M M M
12/12/2019 8:00 AM 0.00 0.0 M M M
12/13/2019 8:30 AM 0.00 0.0 M M T A couple small patches of snow remain on the ground.
12/14/2019 8:30 AM T T M T M Snow is a combination of flakes and graupel. A light dusting. There is still a trace of old snow in areas of deep shade.
12/15/2019 8:30 AM 0.01 0.2 0.01 T M New snow is between grass blades thus I couldn't get a core. There remains old snow only in a couple small patches in deep shade.
12/16/2019 8:30 AM 0.00 0.0 M T M
12/17/2019 8:30 AM 0.00 0.0 M T M Small patches of old snow remains in deep shade.
12/18/2019 8:30 AM 0.00 0.0 M T M A couple small patches of snow remain in deep shade.
12/19/2019 8:30 AM 0.00 0.0 M T M
12/20/2019 8:30 AM 0.00 0.0 M T M
12/21/2019 8:30 AM 0.00 0.0 M T M
12/22/2019 8:30 AM 0.00 0.0 M T M
12/23/2019 8:30 AM 0.00 0.0 M T M
12/24/2019 8:30 AM 0.00 0.0 M T M
12/25/2019 8:30 AM 0.00 0.0 M T M
12/26/2019 8:30 AM T 0.0 M T M At 7:22 AM snow/ sleet mix fell as i drive South on broadway, at Alpine st. It tapered off and stopped a few minutes later, by the time I reached Broadway and Euclid. Heading south on 36 I could see heavy cloud cover over Boulder that did not extend beyond town to south, appeared to extend well beyond town to the north.
12/27/2019 8:30 AM 0.00 0.0 M T M There is still one very small spot of old snow.
12/28/2019 8:30 AM 0.16 3.3 0.17 4.1 0.13 There was no old snow on the ground where total snow was measured.
12/29/2019 8:30 AM 0.02 0.2 0.01 3.5 M
12/30/2019 8:30 AM 0.00 0.0 M M M
12/31/2019 8:30 AM 0.00 0.0 M 2.4 0.11
1/1/2020 8:30 AM 0.00 0.0 M M 0.08 Old snow covered most of the lawn and tapered to nothing along the edges. Water equivalent was .16" measured at the center of the snow area.
1/2/2020 8:30 AM 0.00 0.0 M T M There is very little old snow on the ground, less than before the last snow.
1/3/2020 8:30 AM 0.00 0.0 M T M
1/4/2020 8:30 AM 0.00 0.0 M 0.0 M
1/5/2020 8:30 AM 0.00 0.0 M 0.0 M
1/6/2020 8:30 AM 0.00 0.0 M 0.0 M
1/7/2020 8:30 AM M M M M M
1/8/2020 8:30 AM M M M M M
1/9/2020 8:30 AM M M M M M
1/10/2020 8:30 AM 0.00 0.0 M 0.0 M
1/11/2020 8:30 AM 0.00 0.0 M 0.0 M Top of gauge, dry fallen leaves and grass were frost crusted.
1/12/2020 8:30 AM 0.00 0.0 M 0.0 M
1/13/2020 8:30 AM 0.00 0.0 M 0.0 M
1/14/2020 8:30 AM 0.00 0.0 M 0.0 M
1/15/2020 8:30 AM 0.00 0.0 M 0.0 M
1/16/2020 8:30 AM 0.00 0.0 M 0.0 M
1/17/2020 8:30 AM 0.00 0.0 M 0.0 M
1/18/2020 8:30 AM T T M 0.0 M Before noon it snowed for a few minutes with no accumulation.
1/19/2020 8:30 AM 0.00 0.0 M 0.0 M
1/20/2020 8:30 AM 0.00 0.0 M 0.0 M
1/21/2020 8:30 AM 0.00 0.0 M 0.0 M
1/22/2020 8:30 AM 0.00 0.0 M 0.0 M
1/23/2020 8:30 AM 0.00 0.0 M 0.0 M
1/24/2020 8:30 AM 0.00 0.0 M 0.0 M
1/25/2020 8:30 AM 0.00 0.0 M 0.0 M
1/26/2020 8:30 AM 0.00 0.0 M 0.0 M
1/27/2020 8:30 AM 0.00 0.0 M 0.0 M
1/28/2020 8:30 AM 0.00 0.0 M 0.0 M
1/29/2020 8:30 AM 0.00 0.0 M 0.0 M
1/30/2020 8:30 AM 0.00 0.0 M 0.0 M
1/31/2020 8:30 AM M M M M M I was on my way home from Denver in the evening and drove through snow and sleet along hwy 93, getting lighter the closer I got to Boulder. At home it was hard to tell if there was any precipitation there.
2/1/2020 8:30 AM 0.00 0.0 M 0.0 M
2/2/2020 8:30 AM 0.00 0.0 M 0.0 M
2/3/2020 8:30 AM 0.09 1.2 0.03 2.0 0.03 Snow board measurement of melted snow excludes the 1/16" of ice stuck to the board. Depth of snow/ice on board includes 1/16" ice. Sometime at night I coulde hear rain falling.
2/4/2020 8:30 AM 0.45 8.5 0.53 10.2 0.55 Snow flakes now are small clusters of crystals. Yesterday afternoon the flakes where large.
2/5/2020 8:30 AM 0.02 0.8 0.02 7.9 0.56
2/6/2020 8:30 AM 0.00 0.0 M 5.9 0.57
2/7/2020 8:30 AM 0.23 2.4 0.22 7.7 0.94
2/8/2020 8:30 AM 0.10 M 0.10 7.5 1.00 Forgot to measure depth on snow board before sweeping snow off. Actual amount of melted new snow should be more than reported as there was a crust of snow/ice that was not included in core
2/9/2020 8:30 AM 0.16 2.0 0.17 8.3 1.12 Snoe coming down now is small flake clusters.
2/10/2020 8:30 AM 0.10 1.0 0.06 8.3 1.06
2/11/2020 8:30 AM 0.45 8.5 0.43 15.4 1.58
2/12/2020 8:30 AM 0.00 0.0 M 13.0 1.64
2/13/2020 8:30 AM 0.22 3.3 0.22 15.7 1.97
2/14/2020 8:30 AM 0.00 0.0 M 13.4 1.68
2/15/2020 8:30 AM 0.00 0.0 M 10.6 1.82 EDIT: 1.82" precip set to NA pending followup with observer. Total SWE entered for precip. OST 2/15/2020 10:55 AM -CCR Staff SDH-
2/16/2020 8:30 AM 0.00 0.0 M 9.4 1.73
2/17/2020 8:30 AM 0.00 0.0 M 8.4 1.68
2/18/2020 8:30 AM 0.09 0.9 0.09 8.6 M
2/19/2020 8:30 AM 0.00 0.0 M M M
2/21/2020 8:30 AM M M M M M
2/22/2020 8:30 AM M M M M M
2/23/2020 8:30 AM M M M M M
2/24/2020 8:30 AM M M M M M
2/25/2020 8:30 AM M M M M M
2/26/2020 8:30 AM 0.00 0.0 M M 0.40 Melted snow was 1.62" at a deeper part. Snow covered more than 50% of non paved areas. The reported average melted snow takes these factors into account. On my block snow covered at least half, often more like 75%, of nonpaved areas.
2/27/2020 8:30 AM 0.00 0.0 M 1.4 0.38 Snow depth measured at a deeper part of a snow patch was 5.3". Water equivalent of the core taken at deeper part was 1.5". reported measurement for old snow on the took into account snow covered about 50% of non paved areas.
2/28/2020 8:30 AM 0.00 0.0 M M M
2/29/2020 8:30 AM 0.00 0.0 M M M
3/1/2020 8:30 AM 0.00 0.0 M 0.2 0.01 Depth of old snow patch was about 2" at a deeper part and covered about 20% of unpaved areas. These factors informed reported amounts.
3/2/2020 8:30 AM 0.29 3.0 0.29 4.3 0.30 Snow on ground was measured where there was no old snow. There are still small patches of old snow under new.
3/3/2020 8:40 AM 0.00 0.0 M 0.5 0.13 Snow covers about 1/3 of non paved areas. At a deeper location depth is about 3.1".
3/4/2020 8:30 AM 0.00 0.0 M 0.2 0.05 Old.snow on ground in a deeper part measured about 2" deep. Snow covered about20% of nonpaved ground. Reported values are averages.
3/5/2020 8:30 AM 0.00 0.0 M T T Small patches of old snow remain on the ground covering about 10% or less of unpaved areas.
3/6/2020 8:30 AM 0.00 0.0 M T M
3/7/2020 8:30 AM 0.00 0.0 M T M
3/8/2020 8:30 AM 0.00 0.0 M 0.0 M
3/9/2020 8:30 AM 0.14 0.0 M 0.0 M
3/10/2020 8:30 AM 0.00 0.0 M 0.0 M
3/11/2020 8:30 AM 0.00 0.0 M 0.0 M
3/12/2020 8:30 AM 0.00 0.0 M 0.0 M
3/13/2020 8:30 AM T 0.0 M 0.0 M There's a trace of frozen precip on the snow board and in gaug. It doesn't look like snow, more like frozen rain.
3/14/2020 8:30 AM 0.09 0.4 0.05 M M Snow on the ground was not enough to completely conceal grass, it was mottled, therefore difficult to measure depth.
3/15/2020 8:30 AM 0.00 0.0 M 0.0 M There as moisture in the bottom of the gauge that looks like condensation rather than precipitation.
3/16/2020 8:30 AM 0.00 0.0 M 0.0 M
3/17/2020 8:30 AM 0.03 0.0 M 0.0 M
3/18/2020 8:30 AM 0.00 0.0 M 0.0 M
3/19/2020 8:30 AM 0.40 0.0 M 0.0 M
3/20/2020 8:30 AM 1.40 6.3 1.15 6.7 1.02 The gauge had 5/16" of ice in the bottom. At measurement time it is snowing very very lightly, snow was falliny as individual flakes - I could see the crystal shape but it was lumpy without clear structure, not sharp looking. When snow began it came down in largish clumps and quickly became heavier in larger clumps.
3/21/2020 8:30 AM 0.01 0.1 0.01 6.3 0.98
3/22/2020 8:30 AM 0.00 0.0 M 2.8 0.61 Snow on the ground was hard and icy. It had the consistency of a packet snow cone.
3/23/2020 8:30 AM 0.00 0.0 M M M
3/24/2020 8:30 AM 0.00 0.0 M T M I couldn't tell if it had rained at this location but as I was walking downtown there was a very brief very light rain, a trace of moisture.
3/25/2020 8:30 AM 0.00 0.0 M 0.0 M
3/26/2020 8:30 AM 0.00 0.0 M 0.0 M
3/27/2020 8:30 AM T 0.0 M 0.0 M There were a few tiny beads of moisture in the gauge but no evidence of precipitation elsewhere in the yard. There is heavy fog in the foothills but now at my house. Air feels humid.
3/28/2020 8:30 AM 0.41 0.7 0.18 2.6 0.14 Snow was hard and compacted. Much of the ground snow depth is grass. I measure to ground.
3/29/2020 8:30 AM 0.00 0.0 M 0.0 M
3/30/2020 8:30 AM 0.00 0.0 M 0.0 M
3/31/2020 8:30 AM T 0.0 M 0.0 M There was no moisture in the gauge however when I was outside in the afternoon there was a fine spray of rain for a short time.
4/1/2020 8:30 AM 0.00 0.0 M 0.0 M
4/2/2020 8:30 AM 0.10 0.0 M 0.0 M At time of measurement there was a light drizzle, more like mist. The wood porch rail was covered in a thin layer of ice and the metal bbq grill was encased in ice. Cherry tree branches and leaf buds have 1/16" +/- ice along top sides of branches, much less on undersides. Hope this doesn't mean no cherry pie this year. Beads of ice were on the outside and inside of gauge, with a sheet of ice and liquid water in the bottom .
4/3/2020 8:30 AM 0.16 M 0.07 M M There wasn't enough snow on the ground to measure; it did not cover the grass instead between blades. I forget to measure depth of snow on the snow board before sweeping it off however I did note there was about 1/16" of ice coating it's face. The board core measurement does not reflect the ice coating. A finely pebble texture coat of ice covered one side of the outside and inside of the gauge and there was ice in the inside bottom, forgot to observe thickness. The cherry tree had just shy of 1/8" ice on the top side of branches and leaf buds.
4/4/2020 8:30 AM 0.00 0.0 M 0.0 M
4/5/2020 8:30 AM 0.00 0.0 M 0.0 M
4/6/2020 8:30 AM 0.00 0.0 M 0.0 M
4/7/2020 8:30 AM 0.00 0.0 M 0.0 M
4/8/2020 8:30 AM 0.00 0.0 M 0.0 M
4/9/2020 8:30 AM 0.00 0.0 M 0.0 M
4/10/2020 8:30 AM 0.00 0.0 M 0.0 M
4/11/2020 8:30 AM 0.00 0.0 M 0.0 M
4/12/2020 8:30 AM 0.46 6.7 0.44 7.9 0.48 Currently snow falls at moderate rate, flakes are sharp individual crystals and clustered crystals. Accumulated snow is fluffy.
4/13/2020 9:50 AM 0.54 M M 14.6 0.75 Forgot to sweepp off snow board, 2 day accumulation was 13.2" snow depth, .95" melted. Bottom of gauge had 1/16"+ thickness of ice. Currently snowing very lightly, small clusters of sharp crystals.
4/14/2020 8:30 AM M M M M M
4/15/2020 8:30 AM 0.00 0.0 M 3.1 0.46 Paved areas are clear of accumulated snow while unpaved areas are largely covered by hard icy snow.
4/16/2020 8:30 AM 0.95 10.2 1.18 12.6 1.18 The gauge had a little snow in it and a tall pile on top so I believe the gauage measurement is pretty unreliable. There was about 1/4" of slushy packed snow on the snow board below the lighter snow. This snow was not as light, fluffy as the previous snow. It continues to snow at a moderate rate, small and medium flake clusters. Clear crystal structure can be seen but not sharp.
4/17/2020 8:30 AM 0.43 3.7 0.43 13.2 1.43 Bright sunny day. Snow surface sparkled with sharp large crystals. Crusty ice coated the face of the snow board and was not scraped into the core so measurement does not reflect the ice. The gauge had long crystal development on the surface.
4/18/2020 8:30 AM 0.00 0.0 M 6.7 1.08 Accumulated snow was very crusty and surface was lumpy.
4/19/2020 8:30 AM T 0.0 M 3.3 0.58 Some time in the late afternoon there was a moment when raindrops fell.
4/20/2020 8:30 AM 0.00 0.0 M T M There are small patches of old snow on the ground but it enough to measure.
4/21/2020 8:30 AM 0.00 0.0 M T M Only a couple tiny patches of snow remain in the deepest shade.
4/22/2020 8:30 AM 0.00 0.0 M 0.0 M
4/23/2020 8:30 AM M 0.0 M 0.0 M I forgot to check the gauge. Rain was never more than light sprinkle, a couple times just enough to dampen pavement.
4/24/2020 8:30 AM 0.01 0.0 M 0.0 M Exposed Earth in the vegetable garden was dark from moisture. Paving was dry. A few beads of water on grass blade.
4/25/2020 8:30 AM 0.06 0.0 M 0.0 M
4/26/2020 8:30 AM 0.00 0.0 M 0.0 M
4/27/2020 8:30 AM 0.00 0.0 M 0.0 M
4/28/2020 8:30 AM 0.00 0.0 M 0.0 M
4/29/2020 8:30 AM 0.00 0.0 M 0.0 M
4/30/2020 8:30 AM 0.00 0.0 M 0.0 M
5/1/2020 8:30 AM T 0.0 M 0.0 M At 16:56 while I was working in the yard a few drops came down and that was it. Nothing measurable.
5/2/2020 8:30 AM 0.00 0.0 M 0.0 M
5/3/2020 8:30 AM 0.11 0.0 M 0.0 M
5/4/2020 8:30 AM 0.06 0.0 M 0.0 M
5/6/2020 8:30 AM 0.00 0.0 M 0.0 M
5/7/2020 8:30 AM 0.00 0.0 M 0.0 M
5/8/2020 8:30 AM 0.04 0.0 M 0.0 M
5/9/2020 8:30 AM 0.00 0.0 M 0.0 M
5/10/2020 8:30 AM 0.00 0.0 M 0.0 M
5/11/2020 8:30 AM 0.00 0.0 M 0.0 M
5/12/2020 8:30 AM 0.13 0.0 M 0.0 M
5/13/2020 8:30 AM 0.00 0.0 M 0.0 M
5/14/2020 8:30 AM 0.00 0.0 M 0.0 M
5/15/2020 8:30 AM 0.07 0.0 M 0.0 M
5/16/2020 8:30 AM 0.17 0.0 M 0.0 M See hail report.
5/17/2020 8:30 AM 0.00 0.0 M 0.0 M
5/18/2020 8:30 AM 0.00 0.0 M 0.0 M
5/19/2020 8:30 AM 0.00 0.0 M M M
5/20/2020 8:30 AM T M M M M A fewndropsnfell. At 4:42 pm.
5/21/2020 8:30 AM 0.00 0.0 M M M
5/22/2020 8:30 AM 0.00 0.0 M 0.0 M
5/23/2020 8:30 AM 0.00 0.0 M 0.0 M
5/24/2020 8:30 AM T 0.0 M 0.0 M There was no water in the gauge, however, while I was outside in late afternoon early evening it started to rain 2 or 3 times. The rain was light and blown around by moderate wind.
5/25/2020 8:30 AM 0.99 0.0 M 0.0 M Being concerned the gauge would fill i emptied it at 3:32 pm when there was .78" of rain water.
5/26/2020 8:30 AM 0.00 0.0 M 0.0 M
5/27/2020 8:30 AM 0.00 0.0 M 0.0 M
5/28/2020 8:30 AM 0.24 0.0 M 0.0 M
5/29/2020 8:30 AM T 0.0 M 0.0 M There was less than .01" in the gauge, perhaps .005". Last night it was very humid, clammy sleeping.
5/31/2020 8:30 AM 0.03 0.0 M 0.0 M
6/1/2020 8:30 AM 0.01 0.0 M 0.0 M
6/2/2020 8:30 AM 0.00 0.0 M 0.0 M
6/3/2020 8:30 AM 0.03 0.0 M 0.0 M
6/4/2020 8:30 AM 0.00 0.0 M 0.0 M
6/5/2020 8:30 AM M M M M M
6/6/2020 8:30 AM T 0.0 M 0.0 M
6/7/2020 8:30 AM 0.11 0.0 M 0.0 M Very light rain started around 9:00SM, stopped quickly and began again a few times. The sky cleared some in mid afternoon. At around 3:15Pm strong wind began with light w/ rain T around 3:37pm the wind became.very forceful driving heavier rain into windows. At around 3:37 the wind and rain stopped.
6/9/2020 8:30 AM 0.22 0.0 M 0.0 M
6/10/2020 8:30 AM 0.00 0.0 M 0.0 M
6/11/2020 8:30 AM 0.00 0.0 M 0.0 M
6/12/2020 8:30 AM 0.00 0.0 M T M
6/14/2020 8:30 AM 0.27 0.0 M 0.0 M
6/15/2020 8:30 AM 0.00 0.0 M 0.0 M
6/16/2020 8:30 AM 0.00 0.0 M 0.0 M
6/17/2020 8:30 AM 0.00 0.0 M 0.0 M
6/18/2020 8:30 AM 0.00 0.0 M 0.0 M
6/19/2020 8:30 AM 0.86 0.0 M 0.0 M Woke up to blue skies and it just started to rain again at measurement time.
6/20/2020 8:30 AM 0.12 0.0 M 0.0 M I forgot to read the gauge until next say.
6/21/2020 8:30 AM 0.00 0.0 M 0.0 M
6/22/2020 8:30 AM M M M M M
6/23/2020 8:30 AM 0.00 0.0 M 0.0 M
6/24/2020 8:30 AM 0.00 0.0 M 0.0 M
6/25/2020 8:30 AM 0.00 0.0 M 0.0 M
6/26/2020 8:30 AM 0.00 0.0 M 0.0 M
6/27/2020 8:30 AM 0.49 0.0 M 0.0 M There was a bit of hail twice, first around 3:53 pm after rain had started, again at 4:11pm. Each time the hail was very brief and was rice to small or sized. By 4:20pm rain had pretty much stopped
6/28/2020 8:30 AM 0.00 0.0 M 0.0 M
6/29/2020 8:30 AM 0.07 0.0 M 0.0 M Sounds of thunder preceded rain that began as large widely spaced drops.
6/30/2020 8:30 AM 0.00 0.0 M 0.0 M
7/1/2020 8:30 AM 0.02 0.0 M 0.0 M Rain began as a few drops widely spaced, with wind, and within 30 minutes rain became moderately light, and windy speed was higher. I didn't note when it ended and when it began again in the afternoon.
7/2/2020 8:30 AM M M M M M
7/3/2020 8:30 AM 0.00 0.0 M 0.0 M
7/4/2020 8:30 AM 0.00 0.0 M 0.0 M
7/5/2020 8:30 AM 0.00 0.0 M 0.0 M
7/6/2020 8:30 AM 0.01 0.0 M 0.0 M
7/7/2020 8:30 AM 0.00 0.0 M 0.0 M
7/8/2020 8:00 AM 0.00 0.0 M M M
7/9/2020 8:30 AM 0.00 0.0 M 0.0 M
7/10/2020 8:00 AM 0.00 0.0 M M M
7/11/2020 8:30 AM 0.00 0.0 M 0.0 M
7/12/2020 8:30 AM 0.00 0.0 M 0.0 M
7/13/2020 8:30 AM 0.00 0.0 M 0.0 M
7/14/2020 8:30 AM 0.02 0.0 M 0.0 M
7/15/2020 8:30 AM 0.02 0.0 M 0.0 M
7/16/2020 8:30 AM 0.00 0.0 M 0.0 M
7/17/2020 8:00 AM 0.00 0.0 M M M
7/18/2020 8:30 AM 0.00 0.0 M 0.0 M
7/19/2020 8:30 AM T 0.0 M 0.0 M A few drops fell during early evening.
7/20/2020 8:00 AM 0.00 0.0 M M M
7/21/2020 8:30 AM 0.00 0.0 M 0.0 M
7/22/2020 8:30 AM 0.00 0.0 M 0.0 M
7/23/2020 8:30 AM T 0.0 M 0.0 M
7/24/2020 8:00 AM 0.00 0.0 M M M
7/25/2020 8:30 AM 0.13 0.0 M 0.0 M
7/26/2020 8:30 AM 0.07 0.0 M 0.0 M
7/27/2020 8:30 AM 0.01 0.0 M 0.0 M
7/28/2020 8:30 AM 0.00 0.0 M 0.0 M
7/29/2020 8:30 AM 0.01 0.0 M 0.0 M Rain fell in large, widely spaced drops for seconds or a minute at around 2:05 pm and again early evening some time close to 7 pm, again lasting a very short time.
7/30/2020 8:30 AM 0.00 0.0 M 0.0 M
7/31/2020 8:30 AM T 0.0 M 0.0 M There was water in the gauge about half way to the 1/100" mark.
8/1/2020 8:30 AM 0.16 0.0 M 0.0 M After light rain comprised of widely spaced large drops began at 3:42pm rain increased in intensity. At around 3:57pm rain was very heavy and included some small hail, not large enough to measure but eying it appeared to be rice sized. By 4:05pm rain was light. Light rain stopped and started a couple more times.
8/2/2020 8:30 AM 0.01 0.0 M 0.0 M
8/3/2020 8:30 AM 0.00 0.0 M 0.0 M
8/4/2020 8:30 AM 0.01 0.0 M 0.0 M
8/5/2020 8:30 AM 0.07 0.0 M 0.0 M
8/6/2020 8:30 AM 0.13 0.0 M 0.0 M Rain came straight down, heavily.
8/7/2020 8:30 AM 0.00 0.0 M 0.0 M
8/8/2020 8:30 AM 0.00 0.0 M 0.0 M
8/9/2020 8:30 AM 0.00 0.0 M 0.0 M
8/10/2020 8:30 AM 0.00 0.0 M 0.0 M
8/11/2020 8:30 AM T 0.0 M 0.0 M A few rain drops fell for a short time, probably less than 5 minutes.
8/12/2020 8:30 AM 0.00 0.0 M 0.0 M
8/13/2020 8:30 AM T 0.0 M 0.0 M A few drops for a few seconds.
8/14/2020 8:30 AM 0.00 0.0 M 0.0 M It's been very dry, hot and smoky.
8/15/2020 8:30 AM 0.00 0.0 M 0.0 M
8/16/2020 8:30 AM 0.00 0.0 M 0.0 M
8/17/2020 8:30 AM 0.00 0.0 M 0.0 M
8/18/2020 8:30 AM 0.00 0.0 M 0.0 M
8/19/2020 8:30 AM 0.00 0.0 M 0.0 M
8/20/2020 8:30 AM T 0.0 M 0.0 M It re ained a couple times sometime after 3:00 pm. First time there were just a few drops lasting seconds. The second time it rained long enough for me to decide that I might want to get under cover, a couple or so minutes. The rain was compromised of smallish drops.
8/21/2020 8:30 AM 0.02 0.0 M 0.0 M It rained twice during the day on 8/20, initially began bat 3:17 pm, ended at 3:45 pm, secondly began at 8:40 pm, ending at around 10:51 pm. I'm not so certain about the last end time but by 10:52 pm it was definitely done.
8/22/2020 8:30 AM 0.00 0.0 M 0.0 M
8/23/2020 8:30 AM 0.00 0.0 M 0.0 M
8/24/2020 8:30 AM 0.00 0.0 M 0.0 M
8/25/2020 8:30 AM 0.00 0.0 M 0.0 M
8/27/2020 8:30 AM 0.01 0.0 M 0.0 M I observed rain twice. First, at 3:18 pm there were smallish drops widely spaced and it was over within 5 minutes. Rain started again at approximately 5:30pm. It was windy and this time there was enough rain to completely wet pavement.
8/28/2020 8:30 AM 0.50 0.0 M 0.0 M Rain was very very heavy before 5:30 pm and gave way to light rain around 5:30.
8/29/2020 8:30 AM 0.05 0.0 M 0.0 M Drizzling at the time of measurement
8/30/2020 8:30 AM 0.01 0.0 M 0.0 M
8/31/2020 8:30 AM 0.00 0.0 M 0.0 M
9/1/2020 8:30 AM 0.13 0.0 M 0.0 M
9/2/2020 8:30 AM 0.00 0.0 M 0.0 M
9/3/2020 8:30 AM 0.00 0.0 M 0.0 M
9/4/2020 8:30 AM 0.00 0.0 M 0.0 M
9/5/2020 8:30 AM 0.00 0.0 M 0.0 M
9/6/2020 8:30 AM 0.00 0.0 M M M
9/7/2020 8:30 AM 0.00 0.0 M 0.0 M
9/8/2020 8:30 AM 0.41 T M 0.0 M There was about 1 mm of slush on the snow board, not enough to scrape up for water equivalent measurement. It is currently raining lightly.
9/9/2020 8:30 AM 1.08 M M M M I was focused on shaking as much heavy wet snow off my trees and forgot to take the ground and snow board measurements at 8:30. At 10:30 am ground snow depth was 3.9" (not deducting for height of grass), .57" melted, and board depth was 3.2", .72" melted. Between 8:30am and 10:30am there was very light precipitation, in the form of sleet and rain. (Will fill in the X's when snow has melted.)
9/10/2020 8:30 AM 0.12 0.0 M 0.1 0.09 There was a thin layer of water on the snow board but no snow. The ground was partially covered by a layer of ice snow, the layer was approximately .10" thick (excluding grass height) and covered about 50% of the lawn.
9/11/2020 8:30 AM 0.00 0.0 M M M
9/12/2020 8:30 AM 0.00 0.0 M 0.0 M
9/13/2020 8:30 AM 0.00 0.0 M 0.0 M
9/14/2020 8:30 AM 0.00 0.0 M 0.0 M
9/15/2020 8:30 AM 0.00 0.0 M 0.0 M
9/16/2020 8:30 AM 0.00 0.0 M 0.0 M
9/17/2020 8:30 AM 0.00 0.0 M 0.0 M
9/18/2020 8:30 AM 0.00 0.0 M 0.0 M
9/19/2020 8:30 AM 0.00 0.0 M 0.0 M
9/20/2020 8:30 AM 0.00 0.0 M 0.0 M
9/21/2020 8:30 AM T 0.0 M 0.0 M There were very brief rain events 3 or more times in the afternoon, 13:24, 13:47, and 14:48. Rain drops were sparse and ended within a couple minutes except the 3rs time which lasted several minutes. There was no moisture in the rain gauge. I observed the rain as I was working in the yard and saw the drops drop on stone pavement.
9/22/2020 8:30 AM 0.00 0.0 M 0.0 M
9/23/2020 8:30 AM 0.00 0.0 M 0.0 M There was no water in the gauge but it rained enough to dampen pavement.
9/24/2020 8:30 AM 0.00 0.0 M 0.0 M
9/25/2020 8:30 AM 0.00 0.0 M 0.0 M
9/26/2020 8:30 AM 0.00 0.0 M 0.0 M
9/28/2020 8:30 AM 0.01 0.0 M 0.0 M Light rain.
9/29/2020 8:30 AM 0.00 0.0 M 0.0 M
9/30/2020 8:30 AM 0.00 0.0 M 0.0 M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/28/2019 10/30/2019 8:30 AM 3 M 7.7 0.77 The depth of snow on a hard surface equivalent to a snow board was 9.8", .85" melted.
11/25/2019 12/03/2019 8:30 AM 9 1.26 7.5 1.32 I was away for the period before, during and after the storm, however my gauge was out collecting precip. The start date is estimated. Storm probably ended 11/30/19. Some water in the gauge might have evaporated between storm end and day of reporting, at least the last couple days have been sunny was warm and sunny.



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
5/15/2020 5:53 PM NA Rice NA White Ice 3 1min no damage True After rain
6/26/2020 3:53 PM It hailed twice for a moment, first around 3:53 pm after rain had started, again at 4:11pm. Each time the hail was very brief, too brief to record duration, and was rice to small or sized. I didn't expect hail therefore did not have a hail pad installed. 1/4" Pea Size NA Rice no damage Intermittent True After rain
7/31/2020 3:57 PM Hail was barely noticeable and too small to measure with rain falling heavily at the same time. Size indicated here is from eye observation standing indoors. I didn't get a hail pad out in time. Rice Rice Rice 1 1min no damage False After rain