Station Overview Station Location
Station Number IA-LY-6 Latitude 43.4688971
Station Name Rock Rapids 3.0 N Longitude -96.1560443
County Lyon Elevation (ft) 1365



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 2.12 1.57 34 1.57 11 0.00 23 0 3 0 0.0 0 0
Nov 16 1.47 0.91 54 0.00 0 0.91 54 1 0 0 0.0 0 0
Dec 16 0.81 1.13 17 0.00 0 1.13 17 3 0 0 0.0 0 0
Jan 17 0.58 0.38 22 0.05 1 0.33 21 2 1 0 0.0 0 1
Feb 17 0.60 0.29 28 0.00 0 0.29 28 4 0 0 0.0 0 0
March 17 1.75 0.95 31 0.15 1 0.80 30 3 1 0 1.6 1 1
April 17 3.07 1.30 30 0.20 2 1.10 28 2 1 0 0.0 0 0
May 17 3.29 4.21 24 1.50 5 2.71 19 5 3 1 0.0 0 0
June 17 4.55 3.01 17 1.23 6 1.78 11 4 5 0 0.0 0 0
July 17 3.56 1.18 31 0.20 2 0.98 29 2 2 0 0.0 0 0
Aug 17 3.26 6.51 30 2.03 8 4.48 22 4 8 0 0.0 0 0
Sept 17 3.10 2.54 30 1.10 6 1.44 24 5 5 0 0.0 0 0
Water Year Totals: 28.16" 23.98" 348 days 8.03" 42 15.95" 306 days 35 29 days 1 days 1.6" 1 days 2 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
10/2/2016
10/3/2016 0.00
10/4/2016 0.00
10/5/2016 0.98
10/6/2016 0.00
10/7/2016 0.55
10/8/2016
10/9/2016 0.00
10/10/2016
10/11/2016
10/12/2016
10/13/2016 0.00
10/14/2016 0.00
10/15/2016 0.00
10/16/2016
10/17/2016
10/18/2016 0.04
10/19/2016 0.00
10/20/2016 **
10/21/2016 **
10/22/2016 **
10/23/2016 **
10/24/2016 **
10/25/2016 **
10/26/2016 **
10/27/2016 **
10/28/2016 **
10/29/2016 **
10/30/2016 **
10/31/2016 **
11/1/2016 **
11/2/2016 **
11/3/2016 **
11/4/2016 **
11/5/2016 **
11/6/2016 **
11/7/2016 **
11/8/2016 **
11/9/2016 **
11/10/2016 **
11/11/2016 **
11/12/2016 **
11/13/2016 **
11/14/2016 **
11/15/2016 **
11/16/2016 **
11/17/2016 **
11/18/2016 **
11/19/2016 **
11/20/2016 **
11/21/2016 **
11/22/2016 **
11/23/2016 **
11/24/2016 **
11/25/2016 **
11/26/2016 **
11/27/2016 **
11/28/2016 **
11/29/2016 **
11/30/2016 **
12/1/2016 **
12/2/2016 **
12/3/2016 0.60
12/4/2016 **
12/5/2016 **
12/6/2016 **
12/7/2016 **
12/8/2016 **
12/9/2016 **
12/10/2016 **
12/11/2016 0.15
12/12/2016 **
12/13/2016 **
12/14/2016 **
12/15/2016 **
12/16/2016 **
12/17/2016 0.38
12/18/2016
12/19/2016
12/20/2016
12/21/2016
12/22/2016
12/23/2016
12/24/2016
12/25/2016
12/26/2016
12/27/2016
12/28/2016
12/29/2016
12/30/2016
12/31/2016
Day of YearDaily PrcpMultiday Prcp
1/1/2017
1/2/2017
1/3/2017
1/4/2017
1/5/2017
1/6/2017
1/7/2017
1/8/2017
1/9/2017
1/10/2017 0.05
1/11/2017 **
1/12/2017 **
1/13/2017 **
1/14/2017 **
1/15/2017 **
1/16/2017 **
1/17/2017 **
1/18/2017 **
1/19/2017 **
1/20/2017 **
1/21/2017 **
1/22/2017 **
1/23/2017 0.15
1/24/2017 **
1/25/2017 0.18
1/26/2017 **
1/27/2017 **
1/28/2017 **
1/29/2017 **
1/30/2017 **
1/31/2017 **
2/1/2017 **
2/2/2017 **
2/3/2017 **
2/4/2017 **
2/5/2017 **
2/6/2017 **
2/7/2017 **
2/8/2017 **
2/9/2017 **
2/10/2017 **
2/11/2017 **
2/12/2017 **
2/13/2017 **
2/14/2017 0.08
2/15/2017 **
2/16/2017 **
2/17/2017 **
2/18/2017 **
2/19/2017 **
2/20/2017 **
2/21/2017 **
2/22/2017 0.14
2/23/2017 **
2/24/2017 0.07
2/25/2017 **
2/26/2017 **
2/27/2017 **
2/28/2017 0.00
3/1/2017 0.15
3/2/2017 **
3/3/2017 **
3/4/2017 **
3/5/2017 **
3/6/2017 **
3/7/2017 **
3/8/2017 **
3/9/2017 **
3/10/2017 **
3/11/2017 0.00
3/12/2017 **
3/13/2017 0.35
3/14/2017 **
3/15/2017 **
3/16/2017 **
3/17/2017 **
3/18/2017 **
3/19/2017 **
3/20/2017 **
3/21/2017 **
3/22/2017 **
3/23/2017 **
3/24/2017 **
3/25/2017 **
3/26/2017 **
3/27/2017 **
3/28/2017 **
3/29/2017 **
3/30/2017 0.45
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 0.00
4/10/2017 0.00
4/11/2017 0.20
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 1.10
4/30/2017 **
5/1/2017 **
5/2/2017 1.67
5/3/2017 **
5/4/2017 **
5/5/2017 **
5/6/2017 **
5/7/2017 **
5/8/2017 **
5/9/2017 0.00
5/10/2017 0.00
5/11/2017 **
5/12/2017 **
5/13/2017 **
5/14/2017 **
5/15/2017 **
5/16/2017 0.02
5/17/2017 0.49
5/18/2017 0.80
5/19/2017 **
5/20/2017 0.93
5/21/2017 0.21
5/22/2017 T
5/23/2017 **
5/24/2017 0.09
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 1.45
6/15/2017 **
6/16/2017 **
6/17/2017 0.01
6/18/2017 0.22
6/19/2017 **
6/20/2017 **
6/21/2017 0.32
6/22/2017 0.17
6/23/2017 **
6/24/2017 **
6/25/2017 0.00
6/26/2017 0.10
6/27/2017
6/28/2017 0.55
6/29/2017 0.00
6/30/2017 0.19
Day of YearDaily PrcpMultiday Prcp
7/1/2017 0.05
7/2/2017 **
7/3/2017 **
7/4/2017 **
7/5/2017 **
7/6/2017 **
7/7/2017 **
7/8/2017 **
7/9/2017 0.00
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 0.98
7/26/2017 0.15
7/27/2017 **
7/28/2017 **
7/29/2017 **
7/30/2017 **
7/31/2017 **
8/1/2017 **
8/2/2017 0.00
8/3/2017 0.04
8/4/2017 0.03
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 0.68
8/14/2017 0.28
8/15/2017 0.02
8/16/2017 0.05
8/17/2017 0.98
8/18/2017 0.08
8/19/2017 **
8/20/2017 **
8/21/2017 **
8/22/2017 3.54
8/23/2017 **
8/24/2017 0.26
8/25/2017
8/26/2017 0.55
8/27/2017 **
8/28/2017 **
8/29/2017 **
8/30/2017 **
8/31/2017 **
9/1/2017 0.00
9/2/2017 0.18
9/3/2017 **
9/4/2017 **
9/5/2017 **
9/6/2017 **
9/7/2017 **
9/8/2017 **
9/9/2017 **
9/10/2017 0.06
9/11/2017 **
9/12/2017 **
9/13/2017 **
9/14/2017 **
9/15/2017 **
9/16/2017 **
9/17/2017 0.03
9/18/2017 0.51
9/19/2017 0.11
9/20/2017 0.09
9/21/2017 **
9/22/2017 **
9/23/2017 **
9/24/2017 **
9/25/2017 1.35
9/26/2017 0.21
9/27/2017 0.00
9/28/2017 **
9/29/2017 **
9/30/2017 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/3/2016 7:00 AM 0.00 0.0 M M M
10/4/2016 7:00 AM 0.00 0.0 M M M
10/5/2016 7:00 AM 0.98 M M M M
10/6/2016 7:00 AM 0.00 0.0 M M M
10/7/2016 7:00 AM 0.55 M M M M
10/9/2016 7:00 AM 0.00 0.0 M M M
10/13/2016 7:00 AM 0.00 0.0 M M M
10/14/2016 7:00 AM 0.00 0.0 M M M
10/15/2016 7:00 AM 0.00 0.0 M M M
10/18/2016 7:00 AM 0.04 M M M M
10/19/2016 7:00 AM 0.00 0.0 M M M
1/10/2017 2:00 PM 0.05 M M 2.4 M Could not get good core of existing snow cover, as bottom inch frozen.
3/1/2017 10:00 AM 0.15 1.6 0.15 1.5 0.15
4/10/2017 9:00 AM 0.00 0.0 M M M
4/11/2017 10:00 AM 0.20 M M M M
5/10/2017 7:00 AM 0.00 0.0 M M M
5/17/2017 7:00 AM 0.49 M M M M
5/18/2017 7:00 AM 0.80 M M M M
5/21/2017 7:00 AM 0.21 M M M M
5/22/2017 7:00 AM T M M M M
6/18/2017 7:00 AM 0.22 M M M M
6/22/2017 8:30 AM 0.17 M M M M
6/26/2017 7:30 AM 0.10 M M M M
6/28/2017 7:00 AM 0.55 M M M M
6/29/2017 7:00 AM 0.00 0.0 M M M
6/30/2017 7:00 AM 0.19 M M M M
7/1/2017 7:00 AM 0.05 M M M M
7/26/2017 8:00 AM 0.15 M M M M
8/3/2017 7:30 AM 0.04 M M M M
8/4/2017 7:00 AM 0.03 M M M M
8/14/2017 7:00 AM 0.28 M M M M
8/15/2017 8:45 AM 0.02 M M M M
8/16/2017 7:30 AM 0.05 M M M M
8/17/2017 7:30 AM 0.98 M M M M
8/18/2017 4:00 PM 0.08 M M M M
8/26/2017 7:00 AM 0.55 M M M M
9/2/2017 10:00 AM 0.18 M M M M
9/18/2017 7:35 AM 0.51 M M M M
9/19/2017 9:45 AM 0.11 M M M M
9/20/2017 7:00 AM 0.09 M M M M
9/26/2017 7:45 AM 0.21 M M M M
9/27/2017 8:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/20/2016 11/24/2016 7:00 AM 36 0.91 0.0 M
10/21/2016 12/03/2016 7:00 AM 44 0.60 M M
12/4/2016 12/11/2016 2:15 PM 8 0.15 2.4 0.15
12/12/2016 12/17/2016 1:00 PM 6 0.38 5.9 0.57
1/11/2017 1/23/2017 7:00 PM 13 0.15 M M Snow gone from most surfaces - only scattered patches remain.
1/24/2017 1/25/2017 3:30 PM 2 0.18 3.5 M
1/26/2017 2/14/2017 11:00 AM 20 0.08 M M Only snow on ground is scattered patches in shade where drifted.
2/15/2017 2/22/2017 12:00 PM 8 0.14 M M
2/23/2017 2/24/2017 10:30 AM 2 0.07 3.0 0.07
2/25/2017 2/28/2017 7:00 AM 4 0.00 M M
3/2/2017 3/11/2017 7:00 AM 10 0.00 0.0 0.00
3/12/2017 3/13/2017 2:00 PM 2 0.35 3.9 0.57 The snow had probably settled some since this was an afternoon reading, so depth may have measured more first thing in the morning. I suspect the core reading is the more accurate - taken on a flat surface. I think the wind influence skews the amount of snow captured in the gauge, although the gauge is in a relatively protected location. There was no snow on the ground before the storm.
3/14/2017 3/30/2017 2:00 PM 17 0.45 M M
3/31/2017 4/09/2017 1:00 PM 10 0.00 M M
4/12/2017 4/29/2017 7:00 AM 18 1.10 M M
4/30/2017 5/02/2017 7:00 AM 3 1.67 M M
5/3/2017 5/09/2017 7:00 AM 7 0.00 M M
5/11/2017 5/16/2017 7:00 AM 6 0.02 M M Prices occurred night of 5/15-5/16
5/19/2017 5/20/2017 7:00 AM 2 0.93 M M
5/23/2017 5/24/2017 7:00 AM 2 0.09 M M
6/13/2017 6/14/2017 7:00 AM 2 1.45 M M About an inch fell on 6/12 between 10 am and 1 pm. The remainder fell late 6/13 to early 6/14.
6/15/2017 6/17/2017 6:30 AM 3 0.01 M M A few sprinkles fell yesterday afternoon.
6/19/2017 6/21/2017 9:45 AM 3 0.32 M M All rain fell in last 12 hours.
6/23/2017 6/25/2017 7:00 AM 3 0.00 M M
7/2/2017 7/09/2017 6:45 AM 8 0.00 M M
7/10/2017 7/25/2017 3:00 PM 16 0.98 M M Gone on a trip, read gauge when got home.
7/27/2017 8/02/2017 7:00 PM 7 0.00 M M
8/5/2017 8/13/2017 5:30 PM 9 0.68 M M
8/19/2017 8/22/2017 4:00 PM 4 3.54 M M All rain fell on the 21st.
8/23/2017 8/24/2017 7:45 AM 2 0.26 M M
8/27/2017 9/01/2017 3:00 PM 6 0.00 M M
9/3/2017 9/10/2017 7:15 AM 8 0.06 M M All rain in last 24 hr.
9/11/2017 9/17/2017 7:45 AM 7 0.03 M M
9/21/2017 9/25/2017 7:50 AM 5 1.35 M M All rain occurred in past 24 hr.
9/28/2017 9/30/2017 7:00 AM 3 0.00 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