Station Overview Station Location
Station Number MT-MH-20 Latitude 46.487686
Station Name Roundup 3.0 NNE Longitude -108.513479
County Musselshell Elevation (ft) 3260



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 17 0.97 0.47 2 0.47 2 0.00 0 0 2 0 0.0 0 1
Nov 17 0.41 0.52 5 0.52 5 0.00 0 0 5 0 3.9 3 1
Dec 17 0.40 1.08 11 1.08 11 0.00 0 0 10 1 18.0 8 2
Jan 18 0.36 0.48 5 0.48 5 0.00 0 0 4 1 11.0 3 0
Feb 18 0.32 2.27 14 2.27 14 0.00 0 0 13 1 31.8 12 0
March 18 0.72 0.49 8 0.49 8 0.00 0 0 6 2 6.4 3 0
April 18 1.39 2.18 9 2.18 9 0.00 0 0 8 1 12.5 4 0
May 18 2.31 3.00 17 3.00 17 0.00 0 0 16 0 0.0 0 0
June 18 2.63 7.95 22 7.70 15 0.25 7 1 15 0 0.0 0 0
July 18 1.59 1.41 12 1.30 8 0.11 4 2 8 0 0.0 0 0
Aug 18 1.13 0.60 9 0.60 9 0.00 0 0 7 2 0.0 0 0
Sept 18 1.20 0.64 6 0.64 6 0.00 0 0 6 0 0.0 0 0
Water Year Totals: 13.43" 21.09" 120 days 20.73" 109 0.36" 11 days 3 100 days 8 days 83.6" 33 days 4 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
10/1/2017 0.40
10/2/2017
10/3/2017 0.07
10/4/2017
10/5/2017
10/6/2017
10/7/2017
10/8/2017
10/9/2017
10/10/2017
10/11/2017
10/12/2017
10/13/2017
10/14/2017
10/15/2017
10/16/2017
10/17/2017
10/18/2017
10/19/2017
10/20/2017
10/21/2017
10/22/2017
10/23/2017
10/24/2017
10/25/2017
10/26/2017
10/27/2017
10/28/2017
10/29/2017
10/30/2017
10/31/2017
11/1/2017
11/2/2017
11/3/2017 0.15
11/4/2017 0.19
11/5/2017
11/6/2017
11/7/2017
11/8/2017
11/9/2017
11/10/2017
11/11/2017 0.10
11/12/2017
11/13/2017
11/14/2017
11/15/2017
11/16/2017
11/17/2017
11/18/2017
11/19/2017
11/20/2017
11/21/2017 0.07
11/22/2017
11/23/2017
11/24/2017
11/25/2017
11/26/2017
11/27/2017
11/28/2017 0.01
11/29/2017
11/30/2017
12/1/2017
12/2/2017
12/3/2017 0.02
12/4/2017 0.04
12/5/2017
12/6/2017
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017
12/12/2017
12/13/2017
12/14/2017
12/15/2017
12/16/2017 T
12/17/2017
12/18/2017
12/19/2017 0.21
12/20/2017 0.02
12/21/2017
12/22/2017
12/23/2017 0.07
12/24/2017
12/25/2017
12/26/2017 0.04
12/27/2017
12/28/2017 0.01
12/29/2017 0.22
12/30/2017 0.35
12/31/2017 0.10
Day of YearDaily PrcpMultiday Prcp
1/1/2018
1/2/2018
1/3/2018
1/4/2018
1/5/2018
1/6/2018
1/7/2018
1/8/2018
1/9/2018
1/10/2018 0.21
1/11/2018 0.09
1/12/2018 0.05
1/13/2018
1/14/2018
1/15/2018
1/16/2018
1/17/2018
1/18/2018
1/19/2018 0.13
1/20/2018
1/21/2018
1/22/2018
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018 T
1/29/2018
1/30/2018
1/31/2018
2/1/2018 0.01
2/2/2018
2/3/2018 0.04
2/4/2018 0.23
2/5/2018 0.90
2/6/2018 0.56
2/7/2018 0.03
2/8/2018 0.03
2/9/2018 0.15
2/10/2018 T
2/11/2018
2/12/2018 0.04
2/13/2018
2/14/2018
2/15/2018 0.05
2/16/2018 0.01
2/17/2018
2/18/2018 0.15
2/19/2018 0.07
2/20/2018
2/21/2018
2/22/2018
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018 0.06
3/5/2018 0.07
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018 0.01
3/11/2018
3/12/2018
3/13/2018
3/14/2018
3/15/2018 T
3/16/2018 T
3/17/2018
3/18/2018
3/19/2018
3/20/2018
3/21/2018
3/22/2018
3/23/2018 0.12
3/24/2018
3/25/2018
3/26/2018
3/27/2018
3/28/2018
3/29/2018 0.16
3/30/2018
3/31/2018 0.07
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018 0.20
4/3/2018
4/4/2018
4/5/2018
4/6/2018 0.21
4/7/2018
4/8/2018 0.12
4/9/2018
4/10/2018
4/11/2018 T
4/12/2018
4/13/2018 0.56
4/14/2018
4/15/2018
4/16/2018
4/17/2018 0.11
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018 0.28
4/24/2018 0.66
4/25/2018
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018 0.04
5/1/2018
5/2/2018
5/3/2018
5/4/2018
5/5/2018
5/6/2018
5/7/2018 0.03
5/8/2018 0.00
5/9/2018 0.14
5/10/2018 0.18
5/11/2018 0.12
5/12/2018 0.02
5/13/2018 0.07
5/14/2018 0.27
5/15/2018
5/16/2018
5/17/2018
5/18/2018 0.26
5/19/2018 0.75
5/20/2018 0.02
5/21/2018
5/22/2018 0.16
5/23/2018 0.27
5/24/2018 0.63
5/25/2018
5/26/2018 0.01
5/27/2018 0.01
5/28/2018
5/29/2018 0.06
5/30/2018
5/31/2018
6/1/2018 2.66
6/2/2018 0.11
6/3/2018
6/4/2018
6/5/2018 0.33
6/6/2018
6/7/2018
6/8/2018 0.13
6/9/2018 **
6/10/2018 **
6/11/2018 **
6/12/2018 **
6/13/2018 **
6/14/2018 **
6/15/2018 0.25
6/16/2018 0.42
6/17/2018 0.23
6/18/2018 0.11
6/19/2018 1.10
6/20/2018 0.40
6/21/2018
6/22/2018 1.10
6/23/2018 0.27
6/24/2018 0.04
6/25/2018 0.01
6/26/2018
6/27/2018
6/28/2018
6/29/2018 0.15
6/30/2018 0.64
Day of YearDaily PrcpMultiday Prcp
7/1/2018 0.02
7/2/2018
7/3/2018 0.09
7/4/2018 0.64
7/5/2018
7/6/2018
7/7/2018
7/8/2018
7/9/2018
7/10/2018
7/11/2018
7/12/2018
7/13/2018 **
7/14/2018 0.06
7/15/2018
7/16/2018
7/17/2018
7/18/2018 0.18
7/19/2018 0.02
7/20/2018
7/21/2018
7/22/2018 0.06
7/23/2018
7/24/2018
7/25/2018
7/26/2018 0.18
7/27/2018 0.11
7/28/2018 **
7/29/2018 0.05
7/30/2018
7/31/2018
8/1/2018
8/2/2018 T
8/3/2018 0.06
8/4/2018 0.02
8/5/2018 0.01
8/6/2018
8/7/2018
8/8/2018
8/9/2018
8/10/2018
8/11/2018
8/12/2018
8/13/2018
8/14/2018 T
8/15/2018
8/16/2018
8/17/2018
8/18/2018
8/19/2018
8/20/2018
8/21/2018
8/22/2018
8/23/2018 0.03
8/24/2018 0.07
8/25/2018
8/26/2018
8/27/2018 0.11
8/28/2018 0.30
8/29/2018
8/30/2018
8/31/2018
9/1/2018
9/2/2018
9/3/2018
9/4/2018
9/5/2018
9/6/2018
9/7/2018
9/8/2018
9/9/2018
9/10/2018
9/11/2018
9/12/2018
9/13/2018
9/14/2018
9/15/2018
9/16/2018
9/17/2018
9/18/2018
9/19/2018
9/20/2018 0.08
9/21/2018
9/22/2018
9/23/2018
9/24/2018 0.05
9/25/2018 0.15
9/26/2018
9/27/2018
9/28/2018 0.31
9/29/2018 0.03
9/30/2018 0.02



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2017 7:00 AM 0.40 M M M M
10/3/2017 7:00 AM 0.07 M M 1.0 M
11/3/2017 8:00 AM 0.15 2.1 0.15 M M
11/4/2017 8:00 AM 0.19 1.5 0.19 3.0 M
11/11/2017 10:00 AM 0.10 M M M M
11/21/2017 7:00 AM 0.07 0.3 0.03 M M
11/28/2017 7:00 AM 0.01 M M M M
12/3/2017 7:00 AM 0.02 M M M M
12/4/2017 7:00 AM 0.04 M M M M
12/16/2017 7:00 AM T M M M M
12/19/2017 7:00 AM 0.21 3.1 0.21 M M
12/20/2017 7:00 AM 0.02 1.0 0.02 M M
12/23/2017 7:00 AM 0.07 1.0 0.07 M M
12/26/2017 7:00 AM 0.04 0.3 0.04 M M
12/28/2017 7:00 AM 0.01 0.1 M M M
12/29/2017 7:00 AM 0.22 3.5 0.22 M M
12/30/2017 7:00 AM 0.35 6.0 0.35 11.5 M
12/31/2017 7:00 AM 0.10 3.0 0.10 14.5 M
1/10/2018 8:00 AM 0.21 5.0 0.21 M M
1/11/2018 7:30 AM 0.09 4.5 0.09 M M
1/12/2018 7:00 AM 0.05 1.5 0.05 M M
1/19/2018 7:00 AM 0.13 M M M M
1/28/2018 7:00 AM T M M M M
2/1/2018 7:00 AM 0.01 0.5 0.01 M M
2/3/2018 7:00 AM 0.04 M M M M
2/4/2018 7:00 AM 0.23 4.0 0.23 M M
2/5/2018 7:00 AM 0.90 7.0 0.90 M M
2/6/2018 7:00 AM 0.56 6.3 0.56 M M
2/7/2018 7:00 AM 0.03 0.5 0.03 M M
2/8/2018 7:00 AM 0.03 1.0 0.03 M M
2/9/2018 7:00 AM 0.15 4.1 0.15 M M
2/10/2018 7:00 AM T M M M M
2/12/2018 7:00 AM 0.04 1.0 0.04 M M
2/15/2018 7:00 AM 0.05 2.0 0.05 M M
2/16/2018 7:00 AM 0.01 0.3 0.01 M M
2/18/2018 7:00 AM 0.15 3.0 0.15 M M
2/19/2018 7:00 AM 0.07 2.1 0.07 M M
3/4/2018 7:00 AM 0.06 1.0 0.06 M M
3/5/2018 7:00 AM 0.07 3.5 0.07 M M
3/10/2018 7:00 AM 0.01 T M M M Rain and snow
3/15/2018 7:00 AM T M M M M Rain
3/16/2018 7:00 AM T M M M M Light dusting of snow
3/23/2018 8:00 AM 0.12 M M M M
3/29/2018 7:00 AM 0.16 M M M M Some sleet on the ground
3/31/2018 7:00 AM 0.07 1.9 0.05 M M
4/2/2018 7:00 AM 0.20 2.5 0.17 M M
4/6/2018 7:00 AM 0.21 2.0 0.21 M M
4/8/2018 7:00 AM 0.12 1.0 0.12 M M
4/11/2018 7:00 AM T M M M M
4/13/2018 7:00 AM 0.56 7.0 0.56 M M The snow and I share compulsive habits, but on opposite ends of the scale - mine is to keep the driveway and sidewalks clear and the snow's is to keep them covered!
4/17/2018 7:00 AM 0.11 M M M M
4/23/2018 7:00 AM 0.28 M M M M Rain turned to snow about 7 am
4/24/2018 7:00 AM 0.66 M M M M Some snow but it all melted before evening
4/30/2018 7:00 AM 0.04 M M M M
5/7/2018 7:00 AM 0.03 M M M M
5/8/2018 6:30 AM 0.00 0.0 M M M
5/9/2018 7:00 AM 0.14 M M M M
5/10/2018 7:00 AM 0.18 M M M M
5/11/2018 7:00 AM 0.12 M M M M
5/12/2018 7:00 AM 0.02 M M M M Fine mist rain is coming down now
5/13/2018 7:00 AM 0.07 M M M M
5/14/2018 6:20 AM 0.27 M M M M
5/18/2018 8:00 AM 0.26 M M M M
5/19/2018 7:00 AM 0.75 M M M M
5/20/2018 7:00 AM 0.02 M M M M
5/22/2018 7:00 AM 0.16 M M M M
5/23/2018 7:00 AM 0.27 M M M M
5/24/2018 6:00 AM 0.63 M M M M
5/26/2018 7:00 AM 0.01 M M M M
5/27/2018 7:00 AM 0.01 M M M M
5/29/2018 7:00 AM 0.06 M M M M
6/1/2018 7:00 AM 2.66 M M M M We also had about 1/2 foot of hail on the ground
6/2/2018 7:00 AM 0.11 M M M M
6/5/2018 7:00 AM 0.33 M M M M
6/8/2018 5:00 AM 0.13 M M M M
6/16/2018 7:30 AM 0.42 M M M M
6/17/2018 8:00 AM 0.23 M M M M
6/18/2018 7:00 AM 0.11 M M M M
6/19/2018 7:00 AM 1.10 M M M M
6/20/2018 7:00 AM 0.40 M M M M
6/22/2018 7:00 AM 1.10 M M M M
6/23/2018 7:00 AM 0.27 M M M M
6/24/2018 7:00 AM 0.04 M M M M
6/25/2018 7:00 AM 0.01 M M M M
6/29/2018 7:00 AM 0.15 M M M M
6/30/2018 7:00 AM 0.64 M M M M
7/1/2018 7:00 AM 0.02 M M M M
7/3/2018 7:00 AM 0.09 M M M M
7/4/2018 7:00 AM 0.64 M M M M
7/18/2018 7:00 AM 0.18 M M M M
7/19/2018 7:00 AM 0.02 M M M M
7/22/2018 7:00 AM 0.06 M M M M
7/26/2018 7:00 AM 0.18 M M M M
7/27/2018 7:00 AM 0.11 M M M M
8/2/2018 7:00 AM T M M M M
8/3/2018 7:00 AM 0.06 M M M M
8/4/2018 7:00 AM 0.02 M M M M
8/5/2018 7:00 AM 0.01 M M M M
8/14/2018 7:00 AM T M M M M
8/23/2018 7:00 AM 0.03 M M M M
8/24/2018 7:00 AM 0.07 M M M M
8/27/2018 7:00 AM 0.11 M M M M
8/28/2018 7:00 AM 0.30 M M M M
9/20/2018 7:00 AM 0.08 M M M M
9/24/2018 7:00 AM 0.05 M M M M
9/25/2018 7:00 AM 0.15 M M M M
9/28/2018 7:00 AM 0.31 M M M M
9/29/2018 7:00 AM 0.03 M M M M
9/30/2018 7:00 AM 0.02 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
6/9/2018 6/15/2018 10:00 PM 7 0.25 M M
7/13/2018 7/14/2018 7:00 AM 2 0.06 M M
7/28/2018 7/29/2018 7:00 AM 2 0.05 M M



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