Station Overview Station Location
Station Number MT-LC-11 Latitude 46.7258
Station Name Helena 9.3 NNE Longitude -111.9633
County Lewis And Clark Elevation (ft) 3844



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 18 0.67 0.26 4 0.26 4 0.00 0 0 4 0 0.0 0 0
Nov 18 0.43 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 18 0.37 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 19 0.35 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 19 0.30 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 19 0.50 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 19 0.85 0.47 2 0.47 2 0.00 0 0 2 0 0.0 0 0
May 19 1.68 1.82 8 1.82 8 0.00 0 0 8 0 0.0 0 0
June 19 2.12 0.73 5 0.73 5 0.00 0 0 5 0 0.0 0 0
July 19 1.25 1.22 10 1.22 10 0.00 0 0 10 0 0.0 0 0
Aug 19 1.24 1.30 8 1.30 8 0.00 0 0 7 1 0.0 0 0
Sept 19 1.08 2.51 12 2.51 12 0.00 0 0 10 0 0.0 0 0
Water Year Totals: 10.84" 8.31" 49 days 8.31" 49 0.00" 0 days 0 46 days 1 days 0.0" 0 days 0 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
10/1/2018
10/2/2018 0.09
10/3/2018
10/4/2018
10/5/2018 0.04
10/6/2018
10/7/2018 0.05
10/8/2018
10/9/2018
10/10/2018 0.08
10/11/2018
10/12/2018
10/13/2018
10/14/2018
10/15/2018
10/16/2018
10/17/2018
10/18/2018
10/19/2018
10/20/2018
10/21/2018
10/22/2018
10/23/2018
10/24/2018
10/25/2018
10/26/2018
10/27/2018
10/28/2018
10/29/2018
10/30/2018
10/31/2018
11/1/2018
11/2/2018
11/3/2018
11/4/2018
11/5/2018
11/6/2018
11/7/2018
11/8/2018
11/9/2018
11/10/2018
11/11/2018
11/12/2018
11/13/2018
11/14/2018
11/15/2018
11/16/2018
11/17/2018
11/18/2018
11/19/2018
11/20/2018
11/21/2018
11/22/2018
11/23/2018
11/24/2018
11/25/2018
11/26/2018
11/27/2018
11/28/2018
11/29/2018
11/30/2018
12/1/2018
12/2/2018
12/3/2018
12/4/2018
12/5/2018
12/6/2018
12/7/2018
12/8/2018
12/9/2018
12/10/2018
12/11/2018
12/12/2018
12/13/2018
12/14/2018
12/15/2018
12/16/2018
12/17/2018
12/18/2018
12/19/2018
12/20/2018
12/21/2018
12/22/2018
12/23/2018
12/24/2018
12/25/2018
12/26/2018
12/27/2018
12/28/2018
12/29/2018
12/30/2018
12/31/2018
Day of YearDaily PrcpMultiday Prcp
1/1/2019
1/2/2019
1/3/2019
1/4/2019
1/5/2019
1/6/2019
1/7/2019
1/8/2019
1/9/2019
1/10/2019
1/11/2019
1/12/2019
1/13/2019
1/14/2019
1/15/2019
1/16/2019
1/17/2019
1/18/2019
1/19/2019
1/20/2019
1/21/2019
1/22/2019
1/23/2019
1/24/2019
1/25/2019
1/26/2019
1/27/2019
1/28/2019
1/29/2019
1/30/2019
1/31/2019
2/1/2019
2/2/2019
2/3/2019
2/4/2019
2/5/2019
2/6/2019
2/7/2019
2/8/2019
2/9/2019
2/10/2019
2/11/2019
2/12/2019
2/13/2019
2/14/2019
2/15/2019
2/16/2019
2/17/2019
2/18/2019
2/19/2019
2/20/2019
2/21/2019
2/22/2019
2/23/2019
2/24/2019
2/25/2019
2/26/2019
2/27/2019
2/28/2019
3/1/2019
3/2/2019
3/3/2019
3/4/2019
3/5/2019
3/6/2019
3/7/2019
3/8/2019
3/9/2019
3/10/2019
3/11/2019
3/12/2019
3/13/2019
3/14/2019
3/15/2019
3/16/2019
3/17/2019
3/18/2019
3/19/2019
3/20/2019
3/21/2019
3/22/2019
3/23/2019
3/24/2019
3/25/2019
3/26/2019
3/27/2019
3/28/2019
3/29/2019
3/30/2019
3/31/2019
Day of YearDaily PrcpMultiday Prcp
4/1/2019
4/2/2019
4/3/2019
4/4/2019
4/5/2019
4/6/2019
4/7/2019
4/8/2019
4/9/2019
4/10/2019
4/11/2019
4/12/2019
4/13/2019
4/14/2019
4/15/2019
4/16/2019
4/17/2019
4/18/2019
4/19/2019
4/20/2019
4/21/2019 0.45
4/22/2019 0.02
4/23/2019
4/24/2019
4/25/2019
4/26/2019
4/27/2019
4/28/2019
4/29/2019
4/30/2019
5/1/2019
5/2/2019
5/3/2019
5/4/2019
5/5/2019
5/6/2019 0.13
5/7/2019
5/8/2019
5/9/2019
5/10/2019
5/11/2019
5/12/2019
5/13/2019
5/14/2019
5/15/2019
5/16/2019 0.16
5/17/2019
5/18/2019 0.40
5/19/2019 0.02
5/20/2019
5/21/2019
5/22/2019 0.11
5/23/2019
5/24/2019 0.49
5/25/2019 0.02
5/26/2019
5/27/2019 0.49
5/28/2019
5/29/2019
5/30/2019
5/31/2019
6/1/2019
6/2/2019
6/3/2019
6/4/2019
6/5/2019
6/6/2019
6/7/2019
6/8/2019
6/9/2019
6/10/2019
6/11/2019
6/12/2019
6/13/2019
6/14/2019
6/15/2019
6/16/2019
6/17/2019
6/18/2019
6/19/2019
6/20/2019
6/21/2019 0.17
6/22/2019 0.12
6/23/2019
6/24/2019
6/25/2019
6/26/2019 0.12
6/27/2019
6/28/2019 0.20
6/29/2019 0.12
6/30/2019
Day of YearDaily PrcpMultiday Prcp
7/1/2019 0.22
7/2/2019
7/3/2019 0.05
7/4/2019 0.23
7/5/2019
7/6/2019
7/7/2019 0.06
7/8/2019 0.13
7/9/2019 0.25
7/10/2019 0.02
7/11/2019
7/12/2019
7/13/2019
7/14/2019 0.10
7/15/2019
7/16/2019 0.08
7/17/2019
7/18/2019
7/19/2019
7/20/2019
7/21/2019
7/22/2019
7/23/2019 0.08
7/24/2019
7/25/2019
7/26/2019
7/27/2019
7/28/2019
7/29/2019
7/30/2019
7/31/2019
8/1/2019
8/2/2019
8/3/2019 0.05
8/4/2019
8/5/2019
8/6/2019
8/7/2019
8/8/2019
8/9/2019
8/10/2019 0.05
8/11/2019 0.20
8/12/2019 0.66
8/13/2019
8/14/2019
8/15/2019
8/16/2019
8/17/2019
8/18/2019 0.04
8/19/2019
8/20/2019
8/21/2019
8/22/2019
8/23/2019 0.28
8/24/2019 0.02
8/25/2019
8/26/2019
8/27/2019
8/28/2019
8/29/2019
8/30/2019 T
8/31/2019
9/1/2019
9/2/2019
9/3/2019
9/4/2019
9/5/2019
9/6/2019
9/7/2019 0.71
9/8/2019 0.02
9/9/2019 0.89
9/10/2019 0.16
9/11/2019 0.32
9/12/2019 0.00
9/13/2019
9/14/2019
9/15/2019
9/16/2019
9/17/2019
9/18/2019
9/19/2019 0.06
9/20/2019 0.00
9/21/2019 0.17
9/22/2019
9/23/2019
9/24/2019 0.01
9/25/2019
9/26/2019
9/27/2019 0.11
9/28/2019
9/29/2019
9/30/2019 0.06



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/2/2018 7:00 AM 0.09 M M M M
10/5/2018 7:00 AM 0.04 M M M M
10/7/2018 7:00 AM 0.05 M M M M
10/10/2018 7:00 AM 0.08 M M M M
4/21/2019 7:00 AM 0.45 M M M M
4/22/2019 7:00 AM 0.02 M M M M
5/6/2019 7:00 AM 0.13 M M M M
5/16/2019 7:00 AM 0.16 M M M M
5/18/2019 7:00 AM 0.40 M M M M We noted sustained winds gusting to 25 mph during the day 5/17/19. This morning winds are 0 mph.
5/19/2019 7:00 AM 0.02 M M M M
5/22/2019 7:00 AM 0.11 M M M M bRISK NW WINDS
5/24/2019 7:00 AM 0.49 M M M M
5/25/2019 7:00 AM 0.02 M M M M
5/27/2019 7:00 AM 0.49 M M M M Periods of intense rainfall and 1/4" hail during night (5-26) from 5?45 to 7:30 PM. Rain ended around 10 PM.
6/21/2019 7:00 AM 0.17 M M M M
6/22/2019 7:00 AM 0.12 M M M M
6/26/2019 7:00 AM 0.12 M M M M
6/28/2019 7:00 AM 0.20 M M M M
6/29/2019 7:00 AM 0.12 M M M M
7/1/2019 7:00 AM 0.22 M M M M Rained very hard 6/30 between 9:30 and 9:40 PM. Sprinkled until 10 PM. Strong thunder and lightning accompanied downpour.
7/3/2019 7:00 AM 0.05 M M M M
7/4/2019 7:00 AM 0.23 M M M M
7/7/2019 7:00 AM 0.06 M M M M
7/8/2019 7:00 AM 0.13 M M M M
7/9/2019 7:00 AM 0.25 M M M M
7/10/2019 7:00 AM 0.02 M M M M Precipitation collected during continued morning rain of 7/9.
7/14/2019 7:00 AM 0.10 M M M M
7/16/2019 7:00 AM 0.08 M M M M
7/23/2019 7:00 AM 0.08 M M M M Three storms with intense rain, thunder and lightning between 6 and 8 PM.
8/3/2019 7:00 AM 0.05 M M M M Rain accompanied by gusty winds. No hail.
8/10/2019 7:00 AM 0.05 M M M M
8/11/2019 7:00 AM 0.20 M M M M
8/12/2019 7:00 AM 0.66 M M M M
8/18/2019 7:00 AM 0.04 M M M M
8/23/2019 7:15 AM 0.28 M M M M Still raining.
8/24/2019 7:00 AM 0.02 M M M M from yesterday's rain
8/30/2019 7:00 AM T M M M M
9/7/2019 7:00 AM 0.71 M M M M Still sprinkling this morning.
9/8/2019 7:00 AM 0.02 M M M M
9/9/2019 7:00 AM 0.89 M M M M
9/10/2019 7:00 AM 0.16 M M M M
9/11/2019 7:00 AM 0.32 M M M M
9/12/2019 7:00 AM 0.00 0.0 M M M Dense fog this morning. Visibility quite limited.
9/19/2019 7:00 AM 0.06 M M M M Precipitation during early morning hours.
9/20/2019 7:00 AM 0.00 0.0 M M M T during early morning hours.
9/21/2019 7:00 AM 0.17 M M M M Light rain at midnight followed by moderate rain, at times heavy, around 3 am. Definitely not dew!
9/24/2019 7:00 AM 0.01 M M M M Very windy overnight. Precipitation, not dew.
9/27/2019 7:00 AM 0.11 M M M M Precipitation periodically throughout the night.
9/30/2019 7:00 AM 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