Station Overview Station Location
Station Number MT-MS-20 Latitude 46.872975
Station Name Bonner 0.0 SW Longitude -113.86383
County Missoula Elevation (ft) 3818



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 16 1.07 4.22 31 4.22 31 0.00 0 0 23 3 0.0 0 0
Nov 16 1.38 0.77 30 0.77 30 0.00 0 0 7 4 0.0 0 0
Dec 16 1.37 1.76 31 1.76 31 0.00 0 0 10 12 20.7 10 10
Jan 17 1.21 1.24 31 1.24 31 0.00 0 0 9 4 13.9 8 6
Feb 17 1.04 3.78 28 3.78 28 0.00 0 0 15 5 16.2 5 3
March 17 1.29 2.59 29 2.59 29 0.00 0 0 15 11 4.5 2 0
April 17 1.49 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 17 2.28 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 17 2.55 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 17 1.11 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 17 1.24 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 17 1.34 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 17.37" 14.36" 180 days 14.36" 180 0.00" 0 days 0 79 days 39 days 55.3" 25 days 19 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
10/1/2016 0.03
10/2/2016 0.00
10/3/2016 0.32
10/4/2016 0.42
10/5/2016 0.10
10/6/2016 T
10/7/2016 0.17
10/8/2016 0.05
10/9/2016 0.05
10/10/2016 0.20
10/11/2016 0.00
10/12/2016 0.00
10/13/2016 T
10/14/2016 0.38
10/15/2016 T
10/16/2016 0.50
10/17/2016 0.14
10/18/2016 0.25
10/19/2016 0.14
10/20/2016 0.01
10/21/2016 0.17
10/22/2016 0.21
10/23/2016 0.00
10/24/2016 0.01
10/25/2016 0.10
10/26/2016 0.09
10/27/2016 0.03
10/28/2016 0.18
10/29/2016 0.00
10/30/2016 0.18
10/31/2016 0.49
11/1/2016 0.05
11/2/2016 T
11/3/2016 0.00
11/4/2016 0.00
11/5/2016 0.00
11/6/2016 0.00
11/7/2016 0.00
11/8/2016 0.00
11/9/2016 0.00
11/10/2016 0.00
11/11/2016 0.00
11/12/2016 T
11/13/2016 0.00
11/14/2016 0.02
11/15/2016 0.45
11/16/2016 0.11
11/17/2016 0.00
11/18/2016 0.00
11/19/2016 0.00
11/20/2016 0.00
11/21/2016 0.03
11/22/2016 0.00
11/23/2016 T
11/24/2016 0.00
11/25/2016 0.00
11/26/2016 0.00
11/27/2016 T
11/28/2016 0.10
11/29/2016 0.01
11/30/2016 0.00
12/1/2016 0.14
12/2/2016 T
12/3/2016 T
12/4/2016 T
12/5/2016 0.00
12/6/2016 0.00
12/7/2016 T
12/8/2016 T
12/9/2016 0.12
12/10/2016 0.29
12/11/2016 0.04
12/12/2016 0.07
12/13/2016 T
12/14/2016 T
12/15/2016 0.42
12/16/2016 T
12/17/2016 0.00
12/18/2016 0.06
12/19/2016 T
12/20/2016 0.16
12/21/2016 0.00
12/22/2016 0.00
12/23/2016 T
12/24/2016 0.40
12/25/2016 T
12/26/2016 T
12/27/2016 0.06
12/28/2016 0.00
12/29/2016 0.00
12/30/2016 0.00
12/31/2016 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2017 0.07
1/2/2017 0.00
1/3/2017 0.00
1/4/2017 0.00
1/5/2017 0.00
1/6/2017 0.00
1/7/2017 0.05
1/8/2017 0.34
1/9/2017 0.24
1/10/2017 0.08
1/11/2017 0.02
1/12/2017 0.00
1/13/2017 0.00
1/14/2017 0.00
1/15/2017 0.00
1/16/2017 0.00
1/17/2017 0.00
1/18/2017 T
1/19/2017 0.00
1/20/2017 T
1/21/2017 0.04
1/22/2017 0.00
1/23/2017 T
1/24/2017 0.06
1/25/2017 T
1/26/2017 0.00
1/27/2017 0.00
1/28/2017 0.00
1/29/2017 0.00
1/30/2017 0.00
1/31/2017 0.34
2/1/2017 T
2/2/2017 0.00
2/3/2017 0.08
2/4/2017 0.62
2/5/2017 T
2/6/2017 0.22
2/7/2017 0.08
2/8/2017 0.36
2/9/2017 0.55
2/10/2017 0.37
2/11/2017 0.01
2/12/2017 0.00
2/13/2017 0.00
2/14/2017 0.00
2/15/2017 0.00
2/16/2017 0.02
2/17/2017 0.00
2/18/2017 0.00
2/19/2017 T
2/20/2017 0.56
2/21/2017 0.35
2/22/2017 0.04
2/23/2017 T
2/24/2017 T
2/25/2017 0.00
2/26/2017 0.12
2/27/2017 0.35
2/28/2017 0.05
3/1/2017 T
3/2/2017 T
3/3/2017 0.00
3/4/2017 0.06
3/5/2017 0.26
3/6/2017 T
3/7/2017 0.03
3/8/2017 0.48
3/9/2017 0.53
3/10/2017 0.15
3/11/2017 0.03
3/12/2017 T
3/13/2017 0.03
3/14/2017 T
3/15/2017 0.07
3/16/2017 0.23
3/17/2017 0.00
3/18/2017 0.28
3/19/2017 0.02
3/20/2017 T
3/21/2017 T
3/22/2017 0.06
3/23/2017 0.00
3/24/2017 T
3/25/2017 T
3/26/2017 T
3/27/2017 0.30
3/28/2017 T
3/29/2017 0.06
3/30/2017
3/31/2017
Day of YearDaily PrcpMultiday Prcp
4/1/2017
4/2/2017
4/3/2017
4/4/2017
4/5/2017
4/6/2017
4/7/2017
4/8/2017
4/9/2017
4/10/2017
4/11/2017
4/12/2017
4/13/2017
4/14/2017
4/15/2017
4/16/2017
4/17/2017
4/18/2017
4/19/2017
4/20/2017
4/21/2017
4/22/2017
4/23/2017
4/24/2017
4/25/2017
4/26/2017
4/27/2017
4/28/2017
4/29/2017
4/30/2017
5/1/2017
5/2/2017
5/3/2017
5/4/2017
5/5/2017
5/6/2017
5/7/2017
5/8/2017
5/9/2017
5/10/2017
5/11/2017
5/12/2017
5/13/2017
5/14/2017
5/15/2017
5/16/2017
5/17/2017
5/18/2017
5/19/2017
5/20/2017
5/21/2017
5/22/2017
5/23/2017
5/24/2017
5/25/2017
5/26/2017
5/27/2017
5/28/2017
5/29/2017
5/30/2017
5/31/2017
6/1/2017
6/2/2017
6/3/2017
6/4/2017
6/5/2017
6/6/2017
6/7/2017
6/8/2017
6/9/2017
6/10/2017
6/11/2017
6/12/2017
6/13/2017
6/14/2017
6/15/2017
6/16/2017
6/17/2017
6/18/2017
6/19/2017
6/20/2017
6/21/2017
6/22/2017
6/23/2017
6/24/2017
6/25/2017
6/26/2017
6/27/2017
6/28/2017
6/29/2017
6/30/2017
Day of YearDaily PrcpMultiday Prcp
7/1/2017
7/2/2017
7/3/2017
7/4/2017
7/5/2017
7/6/2017
7/7/2017
7/8/2017
7/9/2017
7/10/2017
7/11/2017
7/12/2017
7/13/2017
7/14/2017
7/15/2017
7/16/2017
7/17/2017
7/18/2017
7/19/2017
7/20/2017
7/21/2017
7/22/2017
7/23/2017
7/24/2017
7/25/2017
7/26/2017
7/27/2017
7/28/2017
7/29/2017
7/30/2017
7/31/2017
8/1/2017
8/2/2017
8/3/2017
8/4/2017
8/5/2017
8/6/2017
8/7/2017
8/8/2017
8/9/2017
8/10/2017
8/11/2017
8/12/2017
8/13/2017
8/14/2017
8/15/2017
8/16/2017
8/17/2017
8/18/2017
8/19/2017
8/20/2017
8/21/2017
8/22/2017
8/23/2017
8/24/2017
8/25/2017
8/26/2017
8/27/2017
8/28/2017
8/29/2017
8/30/2017
8/31/2017
9/1/2017
9/2/2017
9/3/2017
9/4/2017
9/5/2017
9/6/2017
9/7/2017
9/8/2017
9/9/2017
9/10/2017
9/11/2017
9/12/2017
9/13/2017
9/14/2017
9/15/2017
9/16/2017
9/17/2017
9/18/2017
9/19/2017
9/20/2017
9/21/2017
9/22/2017
9/23/2017
9/24/2017
9/25/2017
9/26/2017
9/27/2017
9/28/2017
9/29/2017
9/30/2017



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2016 9:00 PM 0.03 M M M M
10/2/2016 9:00 PM 0.00 0.0 M M M
10/3/2016 9:00 PM 0.32 M M M M
10/4/2016 9:00 PM 0.42 M M M M
10/5/2016 9:00 PM 0.10 M M M M
10/6/2016 9:00 PM T M M M M
10/7/2016 9:00 PM 0.17 M M M M
10/8/2016 9:00 PM 0.05 M M M M
10/9/2016 9:00 PM 0.05 M M M M
10/10/2016 9:00 PM 0.20 M M M M
10/11/2016 9:00 PM 0.00 0.0 M M M
10/12/2016 9:00 PM 0.00 0.0 M M M
10/13/2016 9:00 PM T M M M M
10/14/2016 9:00 PM 0.38 M M M M Rained on and off all day. Some heavy rain. Yesterday I had occasion to dig a hole to plant a very small tree. The bottom of the hole at about 8" depth was dry. This is despite more than an inch of rain in the last week. So I don't think that another 0.38" will do much.
10/15/2016 9:00 PM T M M M M
10/16/2016 9:00 PM 0.50 M M M M
10/17/2016 9:00 PM 0.14 M M M M
10/18/2016 9:00 PM 0.25 M M M M
10/19/2016 9:00 PM 0.14 M M M M
10/20/2016 9:00 PM 0.01 M M M M
10/21/2016 9:00 PM 0.17 M M M M
10/22/2016 9:00 PM 0.21 M M M M
10/23/2016 9:00 PM 0.00 0.0 M M M
10/24/2016 9:00 PM 0.01 M M M M
10/25/2016 9:00 PM 0.10 M M M M
10/26/2016 9:00 PM 0.09 M M M M
10/27/2016 9:00 PM 0.03 M M M M
10/28/2016 9:00 PM 0.18 M M M M
10/29/2016 9:00 PM 0.00 0.0 M M M
10/30/2016 9:00 PM 0.18 M M M M
10/31/2016 9:00 PM 0.49 M M M M
11/1/2016 9:00 PM 0.05 M M M M
11/2/2016 9:00 PM T M M M M
11/3/2016 9:00 PM 0.00 0.0 M M M
11/4/2016 9:00 PM 0.00 0.0 M M M
11/5/2016 9:00 PM 0.00 0.0 M M M
11/6/2016 9:00 PM 0.00 0.0 M M M
11/7/2016 9:00 PM 0.00 0.0 M M M
11/8/2016 9:00 PM 0.00 0.0 M M M
11/9/2016 9:00 PM 0.00 0.0 M M M
11/10/2016 9:00 PM 0.00 0.0 M M M
11/11/2016 9:00 PM 0.00 0.0 M M M
11/12/2016 9:00 PM T M M M M
11/13/2016 9:00 PM 0.00 0.0 M M M
11/14/2016 9:00 PM 0.02 M M M M
11/15/2016 9:00 PM 0.45 M M M M
11/16/2016 9:00 PM 0.11 M M M M
11/17/2016 9:00 PM 0.00 0.0 M M M
11/18/2016 9:00 PM 0.00 0.0 M M M
11/19/2016 9:00 PM 0.00 0.0 M M M
11/20/2016 9:00 PM 0.00 0.0 M M M
11/21/2016 9:00 PM 0.03 M M M M
11/22/2016 9:00 PM 0.00 0.0 M M M
11/23/2016 9:00 PM T T T T M
11/24/2016 9:00 PM 0.00 0.0 M M M
11/25/2016 9:00 PM 0.00 0.0 M M M
11/26/2016 9:00 PM 0.00 0.0 M M M
11/27/2016 9:00 PM T T M M M
11/28/2016 9:00 PM 0.10 T 0.10 T 0.10
11/29/2016 9:00 PM 0.01 T M T M
11/30/2016 9:00 PM 0.00 0.0 M M M
12/1/2016 9:00 PM 0.14 2.0 M 2.0 M Light snow all day. Most of the snow melted on the ground until after dark.
12/2/2016 9:00 PM T T M 0.5 M
12/3/2016 9:00 PM T T M T M
12/4/2016 9:00 PM T M M M M
12/5/2016 9:00 PM 0.00 0.0 M M M
12/6/2016 9:00 PM 0.00 0.0 M M M
12/7/2016 9:00 PM T T M 0.5 M
12/8/2016 9:00 PM T M M M M
12/9/2016 9:00 PM 0.12 1.8 M 2.0 M
12/10/2016 9:00 PM 0.29 3.5 M 5.0 M
12/11/2016 9:00 PM 0.04 0.2 M 5.1 M
12/12/2016 9:00 PM 0.07 1.0 0.07 6.0 M
12/13/2016 9:00 PM T M M M M
12/14/2016 9:00 PM T M M M M
12/15/2016 9:00 PM 0.42 6.0 0.48 10.5 M So observation notes are definitely needed here. Wierdest thing I've ever seen (and I've been taking precipitation data for over 10 years). Gauge had 8 -- 10 inches of new snow in it (estimate 9"). New snow on the ground was only 6". Given the problems getting a core (very cold out and powdery snow) I expected less water from the core. But I got more. The two are pretty close though I would trust what fell into the gauge rather than the core, placing the total water at 0.42" rather that 0.48". Possibly the snow on the ground "settled" somehow? Possibly the plastic in the gauge somehow affected the snow falling into it?
12/16/2016 9:00 PM T M M M M
12/17/2016 9:00 PM 0.00 0.0 M M M
12/18/2016 9:00 PM 0.06 0.6 0.06 M M
12/19/2016 9:00 PM T M M M M
12/20/2016 9:00 PM 0.16 M M M M Most of the water in the gauge is from rain. However, it snowed all night and there was about 1 -- 2" on the ground at around 10:00 am MST. The temperature was above freezing most of the day and it rained quite hard all afternoon, so any snow in the gauge melted.
12/21/2016 9:00 PM 0.00 0.0 M M M
12/22/2016 9:00 PM 0.00 0.0 M M M
12/23/2016 9:00 PM T M M M M
12/24/2016 9:00 PM 0.40 5.0 M 11.0 M
12/25/2016 9:00 PM T 0.1 T M M
12/26/2016 9:00 PM T T T M M
12/27/2016 9:00 PM 0.06 0.5 0.06 10.0 M
12/28/2016 9:00 PM 0.00 0.0 M M M
12/29/2016 9:00 PM 0.00 0.0 M M M
12/30/2016 9:00 PM 0.00 0.0 M M M
12/31/2016 9:00 PM 0.00 0.0 M M M
1/1/2017 9:00 PM 0.07 1.0 0.07 M M
1/2/2017 9:00 PM 0.00 0.0 M M M
1/3/2017 9:00 PM 0.00 0.0 M M M
1/4/2017 9:00 PM 0.00 0.0 M M M
1/5/2017 9:00 PM 0.00 0.0 M M M
1/6/2017 9:00 PM 0.00 0.0 M M M
1/7/2017 9:00 PM 0.05 1.0 0.05 9.0 M
1/8/2017 9:00 PM 0.34 4.0 0.34 9.0 M
1/9/2017 9:00 PM 0.24 1.0 0.24 9.0 M Probably got as much as 2 -- 4 inches of snow overnight, and 1 -- 2 inches during the day (very wet and warm) but some melted late in the day before I took measurements. I had to travel up to the Mission Valley (Pablo) this morning and the conditions up there were effectively ground blizzard with snow falling at the rate of 2 -- 3" or more per hour, blowing snow and East winds. On my way back, came down from Evaro and the Missoula valley was quiet (no precipitaion or wind). Amazing difference.
1/10/2017 10:00 PM 0.08 1.2 M 13.0 M
1/11/2017 9:00 PM 0.02 0.2 0.02 M M
1/12/2017 9:00 PM 0.00 0.0 M M M
1/13/2017 9:00 PM 0.00 0.0 M M M
1/14/2017 9:00 PM 0.00 0.0 M M M
1/15/2017 9:00 PM 0.00 0.0 M M M
1/16/2017 9:00 PM 0.00 0.0 M M M
1/17/2017 9:00 PM 0.00 0.0 M M M
1/18/2017 9:00 PM T M M M M
1/19/2017 9:00 PM 0.00 0.0 M M M
1/20/2017 9:00 PM T M M M M Fell as drizzle and freezing fog.
1/21/2017 9:00 PM 0.04 0.5 0.04 9.5 M
1/22/2017 9:00 PM 0.00 0.0 M M M
1/23/2017 9:00 PM T T T M M
1/24/2017 9:00 PM 0.06 M M M M Approximately 1/2" snow in the am, but melted during the day. When I got home there was only ice in the gauge. It was too difficult to get a SWE reading as the snow that was on the ground had refrozen and I couldn't get the gauge through it.
1/25/2017 9:00 PM T T T M M
1/26/2017 9:00 PM 0.00 0.0 M M M
1/27/2017 9:00 PM 0.00 0.0 M M M
1/28/2017 9:00 PM 0.00 0.0 M M M
1/29/2017 9:00 PM 0.00 0.0 M M M
1/30/2017 9:00 PM 0.00 0.0 M M M
1/31/2017 9:00 PM 0.34 5.0 0.34 12.0 M
2/1/2017 9:00 PM T T T M M
2/2/2017 9:00 PM 0.00 0.0 M M M
2/3/2017 9:45 PM 0.08 1.5 0.08 M M Extensive drifting of new snow. measurements from approximately 0.2" to about 5". My estimate is that we received approximately 1.5". Most of the snow apparently was received in the last 2 hours (wasn't on the ground when I walked in at around 6:15 pm.
2/4/2017 9:00 PM 0.62 7.2 0.62 14.0 M
2/5/2017 9:00 PM T T T M M
2/6/2017 9:00 PM 0.22 0.0 M M M
2/7/2017 9:00 PM 0.08 1.0 0.08 M M
2/8/2017 9:00 PM 0.36 4.5 0.36 15.5 M
2/9/2017 9:00 PM 0.55 2.0 M 16.0 M I measured snowfall at 9:00 am, when the rain hadn't melted it yet, as I knew the snow that fell overnight would melt. Unfortunately I did not have time for a core. Later the temperatures rose and I had only water in my gauge.
2/10/2017 9:00 PM 0.37 M M M M Fell as rain.
2/11/2017 9:00 PM 0.01 M M M M
2/12/2017 9:00 PM 0.00 0.0 M M M
2/13/2017 9:00 PM 0.00 0.0 M M M
2/14/2017 9:00 PM 0.00 0.0 M M M
2/15/2017 9:00 PM 0.00 0.0 M M M
2/16/2017 9:00 PM 0.02 M M M M Fell as rain.
2/17/2017 9:00 PM 0.00 0.0 M M M
2/18/2017 9:00 PM 0.00 0.0 M M M
2/19/2017 9:00 PM T M M M M
2/20/2017 9:00 PM 0.56 M M M M
2/21/2017 9:00 PM 0.35 M M M M
2/22/2017 9:00 PM 0.04 M M M M
2/23/2017 9:00 PM T T T M M
2/24/2017 9:00 PM T 0.0 M M M
2/25/2017 9:00 PM 0.00 0.0 M M M
2/26/2017 9:00 PM 0.12 M M M M 2"+ of snow that melted mostly as it fell, so no real record of how much fell.
2/27/2017 9:00 PM 0.35 M M M M 5.0" of snow had fallen by around 6:00 am. Then I had to go to work. No telling how much rain/snow fell during the day. . . Then it melted while I was gone, so all that I have a record of is the snowfall at 6:00 am and then the ice that was in the gauge (melted and then froze) when I got home.
2/28/2017 9:00 PM 0.05 M M M M
3/1/2017 9:00 PM T M M M M
3/2/2017 9:00 PM T M M M M
3/3/2017 9:00 PM 0.00 0.0 M M M
3/4/2017 9:00 PM 0.06 M M M M Fell as wet snow, but don't know how much as it immediately melted.
3/5/2017 9:00 PM 0.26 M M M M Fell as a combination of wet snow and rain. Melted quickly so have no idea of how much new snow fell.
3/6/2017 9:00 PM T M M M M
3/7/2017 9:00 PM 0.03 M M M M Some snow. Most of it melted. Approximately 1/2" fell.
3/8/2017 9:00 PM 0.48 0.5 0.48 M M More snow falling that melted immediately. I finally noticed that the blurb below states "accumulation of new snow", so that is what I put. That is all that accumulated, but much more fell. When I got up this morning, there was perhaps 3" on my car, but about 1 -- 2" on the ground. Now there is only 1/2"
3/9/2017 9:00 PM 0.53 4.0 M M M Mostly fell as snow.
3/10/2017 9:00 PM 0.15 M M M M Mostly fell as snow but none accumulated.
3/11/2017 9:00 PM 0.03 M M M M
3/12/2017 9:00 PM T M M M M
3/13/2017 9:00 PM 0.03 M M M M
3/14/2017 9:00 PM T M M M M
3/15/2017 9:00 PM 0.07 M M M M
3/16/2017 9:00 PM 0.23 M M M M
3/17/2017 9:00 PM 0.00 0.0 M M M
3/18/2017 9:00 PM 0.28 M M M M
3/19/2017 9:00 PM 0.02 M M M M
3/20/2017 9:00 PM T M M M M
3/21/2017 9:00 PM T M M M M
3/22/2017 9:00 PM 0.06 M M M M
3/23/2017 9:00 PM 0.00 0.0 M M M
3/24/2017 9:00 PM T M M M M
3/25/2017 9:00 PM T M M M M
3/26/2017 9:00 PM T M M M M
3/27/2017 9:00 PM 0.30 M M M M
3/28/2017 9:00 PM T M M M M
3/29/2017 9:00 PM 0.06 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes



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