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 19 0.67 0.09 2 0.09 2 0.00 0 0 2 0 0.0 0 0
Nov 19 0.43 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 19 0.37 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 20 0.35 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 20 0.30 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 20 0.50 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 20 0.85 0.04 2 0.04 2 0.00 0 0 2 0 0.0 0 0
May 20 1.68 2.62 12 2.62 12 0.00 0 0 12 0 0.0 0 0
June 20 2.12 3.68 13 3.68 13 0.00 0 0 13 0 0.0 0 0
July 20 1.25 0.35 6 0.35 6 0.00 0 0 6 0 0.0 0 0
Aug 20 1.24 0.02 1 0.02 1 0.00 0 0 1 0 0.0 0 0
Sept 20 1.08 0.42 2 0.42 2 0.00 0 0 2 0 0.0 0 0
Water Year Totals: 10.84" 7.22" 38 days 7.22" 38 0.00" 0 days 0 38 days 0 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
10/1/2019
10/2/2019
10/3/2019
10/4/2019
10/5/2019 0.02
10/6/2019
10/7/2019
10/8/2019
10/9/2019
10/10/2019
10/11/2019
10/12/2019
10/13/2019
10/14/2019
10/15/2019
10/16/2019
10/17/2019
10/18/2019
10/19/2019
10/20/2019 0.07
10/21/2019
10/22/2019
10/23/2019
10/24/2019
10/25/2019
10/26/2019
10/27/2019
10/28/2019
10/29/2019
10/30/2019
10/31/2019
11/1/2019
11/2/2019
11/3/2019
11/4/2019
11/5/2019
11/6/2019
11/7/2019
11/8/2019
11/9/2019
11/10/2019
11/11/2019
11/12/2019
11/13/2019
11/14/2019
11/15/2019
11/16/2019
11/17/2019
11/18/2019
11/19/2019
11/20/2019
11/21/2019
11/22/2019
11/23/2019
11/24/2019
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
12/4/2019
12/5/2019
12/6/2019
12/7/2019
12/8/2019
12/9/2019
12/10/2019
12/11/2019
12/12/2019
12/13/2019
12/14/2019
12/15/2019
12/16/2019
12/17/2019
12/18/2019
12/19/2019
12/20/2019
12/21/2019
12/22/2019
12/23/2019
12/24/2019
12/25/2019
12/26/2019
12/27/2019
12/28/2019
12/29/2019
12/30/2019
12/31/2019
Day of YearDaily PrcpMultiday Prcp
1/1/2020
1/2/2020
1/3/2020
1/4/2020
1/5/2020
1/6/2020
1/7/2020
1/8/2020
1/9/2020
1/10/2020
1/11/2020
1/12/2020
1/13/2020
1/14/2020
1/15/2020
1/16/2020
1/17/2020
1/18/2020
1/19/2020
1/20/2020
1/21/2020
1/22/2020
1/23/2020
1/24/2020
1/25/2020
1/26/2020
1/27/2020
1/28/2020
1/29/2020
1/30/2020
1/31/2020
2/1/2020
2/2/2020
2/3/2020
2/4/2020
2/5/2020
2/6/2020
2/7/2020
2/8/2020
2/9/2020
2/10/2020
2/11/2020
2/12/2020
2/13/2020
2/14/2020
2/15/2020
2/16/2020
2/17/2020
2/18/2020
2/19/2020
2/20/2020
2/21/2020
2/22/2020
2/23/2020
2/24/2020
2/25/2020
2/26/2020
2/27/2020
2/28/2020
2/29/2020
3/1/2020
3/2/2020
3/3/2020
3/4/2020
3/5/2020
3/6/2020
3/7/2020
3/8/2020
3/9/2020
3/10/2020
3/11/2020
3/12/2020
3/13/2020
3/14/2020
3/15/2020
3/16/2020
3/17/2020
3/18/2020
3/19/2020
3/20/2020
3/21/2020
3/22/2020
3/23/2020
3/24/2020
3/25/2020
3/26/2020
3/27/2020
3/28/2020
3/29/2020
3/30/2020
3/31/2020
Day of YearDaily PrcpMultiday Prcp
4/1/2020
4/2/2020
4/3/2020
4/4/2020
4/5/2020
4/6/2020
4/7/2020
4/8/2020
4/9/2020
4/10/2020
4/11/2020
4/12/2020
4/13/2020
4/14/2020
4/15/2020
4/16/2020
4/17/2020
4/18/2020
4/19/2020
4/20/2020
4/21/2020
4/22/2020
4/23/2020 0.01
4/24/2020
4/25/2020
4/26/2020
4/27/2020
4/28/2020
4/29/2020 0.03
4/30/2020
5/1/2020 0.51
5/2/2020
5/3/2020
5/4/2020
5/5/2020
5/6/2020
5/7/2020 0.02
5/8/2020 0.02
5/9/2020 0.03
5/10/2020
5/11/2020
5/12/2020 0.04
5/13/2020 0.01
5/14/2020 0.02
5/15/2020
5/16/2020 0.06
5/17/2020
5/18/2020 0.05
5/19/2020 0.17
5/20/2020 0.77
5/21/2020 0.92
5/22/2020
5/23/2020
5/24/2020
5/25/2020
5/26/2020
5/27/2020
5/28/2020
5/29/2020
5/30/2020
5/31/2020
6/1/2020
6/2/2020 0.02
6/3/2020
6/4/2020
6/5/2020
6/6/2020 0.06
6/7/2020 0.55
6/8/2020 0.26
6/9/2020
6/10/2020
6/11/2020
6/12/2020
6/13/2020
6/14/2020 0.07
6/15/2020 0.31
6/16/2020 0.18
6/17/2020 0.20
6/18/2020 0.32
6/19/2020 0.09
6/20/2020
6/21/2020
6/22/2020
6/23/2020
6/24/2020
6/25/2020
6/26/2020
6/27/2020
6/28/2020 0.24
6/29/2020 0.58
6/30/2020 0.80
Day of YearDaily PrcpMultiday Prcp
7/1/2020 0.06
7/2/2020 0.02
7/3/2020
7/4/2020 0.02
7/5/2020 0.08
7/6/2020
7/7/2020
7/8/2020
7/9/2020
7/10/2020
7/11/2020 0.11
7/12/2020
7/13/2020
7/14/2020
7/15/2020
7/16/2020
7/17/2020
7/18/2020
7/19/2020
7/20/2020
7/21/2020
7/22/2020
7/23/2020 0.06
7/24/2020
7/25/2020
7/26/2020
7/27/2020
7/28/2020
7/29/2020
7/30/2020
7/31/2020
8/1/2020
8/2/2020
8/3/2020
8/4/2020
8/5/2020
8/6/2020 0.02
8/7/2020
8/8/2020
8/9/2020
8/10/2020
8/11/2020
8/12/2020
8/13/2020
8/14/2020
8/15/2020
8/16/2020
8/17/2020
8/18/2020
8/19/2020
8/20/2020
8/21/2020
8/22/2020
8/23/2020
8/24/2020
8/25/2020
8/26/2020
8/27/2020
8/28/2020
8/29/2020
8/30/2020
8/31/2020
9/1/2020
9/2/2020
9/3/2020
9/4/2020
9/5/2020
9/6/2020
9/7/2020 0.14
9/8/2020
9/9/2020
9/10/2020
9/11/2020
9/12/2020
9/13/2020
9/14/2020
9/15/2020
9/16/2020
9/17/2020
9/18/2020
9/19/2020
9/20/2020 0.28
9/21/2020
9/22/2020
9/23/2020
9/24/2020
9/25/2020
9/26/2020
9/27/2020
9/28/2020
9/29/2020
9/30/2020



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/5/2019 7:00 AM 0.02 M M M M
10/20/2019 7:00 AM 0.07 M M M M This is our last rainfall measurement of the season. We don't want our rain gauge damaged by freezing. See you in the spring.
4/23/2020 7:00 AM 0.01 M M M M rain noted between 2 and 6 AM.
4/29/2020 1:00 AM 0.03 M M M M
5/1/2020 8:00 AM 0.51 M M M M The rain started at about 1 PM 4/29 and continued in waves throughout the afternoon and evening; 2:21, 4:14 and 6:20. It stopped around 8 PM. The afternoon rain was accompanied by thunder and lightning.
5/7/2020 7:00 AM 0.02 M M M M Sustained winds from the west throughout the evening and into the morning; 8 to 12 mph.
5/8/2020 7:00 AM 0.02 M M M M
5/9/2020 7:00 AM 0.03 M M M M
5/12/2020 7:00 AM 0.04 M M M M Rain heard at approximately 2 AM. Estimated start and stop times unknown.
5/13/2020 7:00 AM 0.01 M M M M
5/14/2020 7:00 AM 0.02 M M M M Brief showers throughout the afternoon and evening.
5/16/2020 7:00 AM 0.06 M M M M Series of showers during the afternoon and evening.
5/18/2020 7:00 AM 0.05 M M M M
5/19/2020 7:00 AM 0.17 M M M M First lightning noted over Elkhorns at 9:11 PM, rain started at 9:36 PM. Two periods of rain about 40 mins each.
5/20/2020 7:00 AM 0.77 M M M M lightning noted at 9:11 PM Rain started at 9:36 PM Very hard rain at 12:15 AM Pea sized hail at 12:21 AM 23 mph from the N at 5:20 AM Overland flow through garden and onto lawn dislodged railroad tie used for bedding edge, left large puddle on lawn. Overland flow on sidewalks and cement porch left silt and mud behind. Standing water throughout shelter belts and roads.
5/21/2020 7:00 AM 0.92 M M M M Standing water noted in shelter belts and lawn. Drainage "streams" flowing from north to south through fields.
6/2/2020 7:00 AM 0.02 M M M M
6/6/2020 7:00 AM 0.06 M M M M The water in our rain gauge was brown - the result of dust generated by my husband tilling our shelterbelts.
6/7/2020 7:00 AM 0.55 M M M M Rainfall noted during the early evening of 6/6 (6:30 PM).
6/8/2020 7:00 AM 0.26 M M M M Still raining lightly when measurement was taken.
6/14/2020 7:00 AM 0.07 M M M M winds gusting to 33 mph during previous afternoon and evening. Power lost at 3:30 PM, restored at 4:30 AM.
6/15/2020 7:00 AM 0.31 M M M M Rain with pea sized hail started at 3:30 PM and rain continued sporadically through the evening. No accumulation of hail noted on the ground. Rainfall quite heavy at times.
6/16/2020 7:00 AM 0.18 M M M M Started raining lightly around 3:30 PM 6/15, continued during the night and into the morning today. No hail or lightning.
6/17/2020 7:00 AM 0.20 M M M M Light intermittent rain continues. Thundershowers expected this afternoon. Wind gusting to 11 mph from the NW. No lightning or hail.
6/18/2020 7:00 AM 0.32 M M M M Intermittent rain throughout the night and into the morning. At times quite heavy. No hail and wind 0 mph.
6/19/2020 7:00 AM 0.09 M M M M No lighting or hail.
6/28/2020 7:00 AM 0.24 M M M M Rain showers started around 3:30 6/27 and continued in strength and duration throughout the evening. Rainfall was quite heavy at times. Don't know when rain stopped but not raining this morning.
6/29/2020 7:00 AM 0.58 M M M M Rain continuing from yesterday, steady, sometimes heavy. No lightning or thunder, no hail.
6/30/2020 7:00 AM 0.80 M M M M Rain continued through 6/29, stopping sometime overnight. No lightning or hail.
7/1/2020 7:00 AM 0.06 M M M M
7/2/2020 7:00 AM 0.02 M M M M
7/4/2020 7:00 AM 0.02 M M M M Hard shower, no hail.
7/5/2020 7:00 AM 0.08 M M M M Waves of rain, sometimes heavy. Thunder, no hail, no sheet flow.
7/11/2020 7:00 AM 0.11 M M M M The storm the afternoon of 7/10 was very windy, with wind into the mid teens for most of the afternoon. The raindrops were quite large and the rain heavy at times. No thunder, lightning or hail.
7/23/2020 7:00 AM 0.06 M M M M
8/6/2020 7:00 AM 0.02 M M M M Rain very heavy for brief time at 7:22 PM.
9/7/2020 7:00 AM 0.14 M M M M Significantly cooler temperatures today with brisk winds from the N/NW with gusts up to 18 mph. Snowfall in the mountains around the valley. Freeze warnings.
9/20/2020 7:30 AM 0.28 M M M M Lovely afternoon and evening rain showers. Helped clear some of the smoke out of the valley. If we could only have rain like that once a week! Conditions seasonally dry.



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