Station Overview Station Location
Station Number MN-LK-9 Latitude 47.412579
Station Name Silver Bay 11.5 NE Longitude -91.105759
County Lake Elevation (ft) 632



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 3.33 1.92 30 1.92 30 0.00 0 0 12 2 0.0 0 0
Nov 16 2.36 4.64 30 4.64 30 0.00 0 0 10 0 2.0 1 5
Dec 16 1.35 3.08 31 3.08 31 0.00 0 0 11 5 18.0 9 24
Jan 17 1.21 1.92 31 1.92 31 0.00 0 0 9 2 13.0 6 31
Feb 17 0.89 2.65 25 2.65 25 0.00 0 0 9 0 13.7 6 24
March 17 1.55 0.56 16 0.56 16 0.00 0 0 3 0 0.5 1 4
April 17 2.60 3.56 15 3.56 15 0.00 0 0 12 1 0.4 2 0
May 17 3.15 4.43 31 2.50 20 1.93 11 1 6 0 0.0 0 0
June 17 3.82 6.25 29 6.25 29 0.00 0 0 21 0 0.0 0 0
July 17 3.43 1.79 31 1.79 31 0.00 0 0 14 0 0.0 0 0
Aug 17 3.28 5.66 31 5.66 31 0.00 0 0 13 1 0.0 0 0
Sept 17 3.45 5.98 30 3.51 15 2.47 15 1 7 0 0.0 0 0
Water Year Totals: 30.42" 42.44" 330 days 38.04" 304 4.40" 26 days 2 127 days 11 days 47.6" 25 days 88 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 0.00
10/2/2016
10/3/2016 0.00
10/4/2016 0.00
10/5/2016 0.01
10/6/2016 0.27
10/7/2016 0.57
10/8/2016 0.00
10/9/2016 0.03
10/10/2016 0.00
10/11/2016 0.00
10/12/2016 0.02
10/13/2016 0.00
10/14/2016 0.00
10/15/2016 0.00
10/16/2016 0.02
10/17/2016 0.74
10/18/2016 0.04
10/19/2016 0.00
10/20/2016 0.00
10/21/2016 0.00
10/22/2016 0.00
10/23/2016 0.02
10/24/2016 0.07
10/25/2016 0.00
10/26/2016 0.00
10/27/2016 0.04
10/28/2016 0.00
10/29/2016 T
10/30/2016 0.09
10/31/2016 T
11/1/2016 0.08
11/2/2016 0.00
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 0.00
11/13/2016 0.00
11/14/2016 0.00
11/15/2016 0.00
11/16/2016 0.06
11/17/2016 0.01
11/18/2016 0.35
11/19/2016 1.49
11/20/2016 0.00
11/21/2016 0.00
11/22/2016 0.00
11/23/2016 0.21
11/24/2016 0.44
11/25/2016 0.04
11/26/2016 0.00
11/27/2016 0.00
11/28/2016 1.32
11/29/2016 0.64
11/30/2016 0.00
12/1/2016 0.19
12/2/2016 0.00
12/3/2016 0.00
12/4/2016 0.00
12/5/2016 0.19
12/6/2016 0.44
12/7/2016 0.15
12/8/2016 T
12/9/2016 0.00
12/10/2016 0.00
12/11/2016 T
12/12/2016 0.39
12/13/2016 T
12/14/2016 0.00
12/15/2016 0.00
12/16/2016 0.00
12/17/2016 0.02
12/18/2016 0.00
12/19/2016 0.00
12/20/2016 T
12/21/2016 0.06
12/22/2016 0.39
12/23/2016 0.00
12/24/2016 0.00
12/25/2016 T
12/26/2016 0.98
12/27/2016 0.00
12/28/2016 0.00
12/29/2016 0.15
12/30/2016 0.00
12/31/2016 0.12
Day of YearDaily PrcpMultiday Prcp
1/1/2017 0.00
1/2/2017 0.16
1/3/2017 0.89
1/4/2017 T
1/5/2017 0.00
1/6/2017 0.00
1/7/2017 0.00
1/8/2017 0.00
1/9/2017 0.09
1/10/2017 0.01
1/11/2017 0.23
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 0.00
1/19/2017 0.00
1/20/2017 0.00
1/21/2017 0.37
1/22/2017 0.05
1/23/2017 0.00
1/24/2017 0.03
1/25/2017 0.00
1/26/2017 0.00
1/27/2017 0.00
1/28/2017 0.00
1/29/2017 T
1/30/2017 0.00
1/31/2017 0.09
2/1/2017 0.00
2/2/2017 0.00
2/3/2017 0.00
2/4/2017 0.00
2/5/2017 0.30
2/6/2017 0.12
2/7/2017 0.33
2/8/2017 0.11
2/9/2017 0.00
2/10/2017 0.15
2/11/2017 0.05
2/12/2017 0.00
2/13/2017 0.00
2/14/2017 0.00
2/15/2017 0.00
2/16/2017 0.00
2/17/2017 0.00
2/18/2017 0.00
2/19/2017 0.00
2/20/2017 0.00
2/21/2017 1.23
2/22/2017 0.00
2/23/2017 0.24
2/24/2017
2/25/2017
2/26/2017
2/27/2017 0.00
2/28/2017 0.12
3/1/2017 0.00
3/2/2017 0.00
3/3/2017 0.00
3/4/2017 0.00
3/5/2017 0.00
3/6/2017 0.04
3/7/2017 0.48
3/8/2017 0.04
3/9/2017 0.00
3/10/2017 0.00
3/11/2017 0.00
3/12/2017 0.00
3/13/2017 0.00
3/14/2017 0.00
3/15/2017 0.00
3/16/2017 0.00
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
3/31/2017
Day of YearDaily PrcpMultiday Prcp
4/1/2017
4/2/2017 0.07
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 0.01
4/15/2017
4/16/2017 0.16
4/17/2017 0.08
4/18/2017 1.00
4/19/2017 0.28
4/20/2017 0.71
4/21/2017
4/22/2017 0.29
4/23/2017
4/24/2017 0.03
4/25/2017 0.01
4/26/2017 0.48
4/27/2017 0.44
4/28/2017 T
4/29/2017 0.00
4/30/2017 0.00
5/1/2017 0.00
5/2/2017 0.87
5/3/2017 0.00
5/4/2017 0.03
5/5/2017 0.04
5/6/2017 0.00
5/7/2017 0.00
5/8/2017 0.00
5/9/2017 0.00
5/10/2017 0.00
5/11/2017 0.00
5/12/2017 0.00
5/13/2017 0.00
5/14/2017 0.00
5/15/2017 0.02
5/16/2017 0.00
5/17/2017 0.75
5/18/2017 0.79
5/19/2017 0.00
5/20/2017 0.00
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 1.93
6/1/2017
6/2/2017 0.00
6/3/2017 0.00
6/4/2017 0.00
6/5/2017 0.28
6/6/2017 0.00
6/7/2017 0.00
6/8/2017 0.07
6/9/2017 0.07
6/10/2017 0.16
6/11/2017 0.00
6/12/2017 0.15
6/13/2017 0.00
6/14/2017 0.82
6/15/2017 0.04
6/16/2017 0.08
6/17/2017 0.01
6/18/2017 0.26
6/19/2017 0.02
6/20/2017 0.01
6/21/2017 0.01
6/22/2017 0.31
6/23/2017 0.01
6/24/2017 0.08
6/25/2017 0.10
6/26/2017 1.52
6/27/2017 0.03
6/28/2017 0.00
6/29/2017 2.16
6/30/2017 0.06
Day of YearDaily PrcpMultiday Prcp
7/1/2017 0.02
7/2/2017 0.07
7/3/2017 0.00
7/4/2017 0.00
7/5/2017 0.40
7/6/2017 0.01
7/7/2017 0.31
7/8/2017 0.25
7/9/2017 0.00
7/10/2017 0.00
7/11/2017 0.00
7/12/2017 0.09
7/13/2017 0.30
7/14/2017 0.15
7/15/2017 0.00
7/16/2017 0.00
7/17/2017 0.00
7/18/2017 0.03
7/19/2017 0.00
7/20/2017 0.00
7/21/2017 0.00
7/22/2017 0.07
7/23/2017 0.06
7/24/2017 0.02
7/25/2017 0.00
7/26/2017 0.00
7/27/2017 0.00
7/28/2017 0.01
7/29/2017 0.00
7/30/2017 0.00
7/31/2017 0.00
8/1/2017 T
8/2/2017 0.00
8/3/2017 0.00
8/4/2017 0.63
8/5/2017 0.22
8/6/2017 0.09
8/7/2017 0.00
8/8/2017 0.00
8/9/2017 0.07
8/10/2017 1.42
8/11/2017 0.13
8/12/2017 0.00
8/13/2017 0.00
8/14/2017 0.00
8/15/2017 0.00
8/16/2017 0.00
8/17/2017 0.65
8/18/2017 0.63
8/19/2017 0.06
8/20/2017 0.00
8/21/2017 0.00
8/22/2017 0.20
8/23/2017 0.14
8/24/2017 0.00
8/25/2017 0.00
8/26/2017 0.00
8/27/2017 1.38
8/28/2017 0.04
8/29/2017 0.00
8/30/2017 0.00
8/31/2017 0.00
9/1/2017 0.00
9/2/2017 1.05
9/3/2017 0.00
9/4/2017 0.32
9/5/2017 0.05
9/6/2017 0.04
9/7/2017 0.19
9/8/2017 0.00
9/9/2017 0.00
9/10/2017 0.00
9/11/2017 0.01
9/12/2017 0.00
9/13/2017 0.00
9/14/2017 0.00
9/15/2017 1.85
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 2.47



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2016 7:00 AM 0.00 0.0 M M M
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 0.01 M M M M Brief shower
10/6/2016 7:00 AM 0.27 M M M M Rain showers
10/7/2016 7:00 AM 0.57 M M M M Rain
10/8/2016 7:00 AM 0.00 0.0 M M M
10/9/2016 7:00 AM 0.03 M M M M Brief shower
10/10/2016 7:00 AM 0.00 0.0 M M M
10/11/2016 7:00 AM 0.00 0.0 M M M
10/12/2016 7:00 AM 0.02 M M M M Very light rain, mist. Gusty wind with cold front passage midnight-2 AM. Peak wind NW 30 mph
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
10/16/2016 7:00 AM 0.02 M M M M Lt rain, drizzle 8-9:30 AM, dense fog on Lk Superior until 4 PM
10/17/2016 7:00 AM 0.74 M M M M Severe tstm 1-2 AM, tornadic growl aloft 1:10-1:30 AM, showers thru 5:30 AM
10/18/2016 7:00 AM 0.04 M M M M Lt rain, mist
10/19/2016 7:00 AM 0.00 0.0 M M M
10/20/2016 7:00 AM 0.00 0.0 M M M
10/21/2016 7:00 AM 0.00 0.0 M M M
10/22/2016 7:00 AM 0.00 0.0 M M M
10/23/2016 7:00 AM 0.02 M M M M Lt rain
10/24/2016 7:00 AM 0.07 M M M M Lt rain ended 11 AM. First frost of the season this morning, also submitted as Frost report.
10/25/2016 7:00 AM 0.00 0.0 M M M
10/26/2016 7:00 AM 0.00 0.0 M M M
10/27/2016 7:00 AM 0.04 M M M M Lt rain showers
10/28/2016 7:00 AM 0.00 0.0 M M M
10/29/2016 7:00 AM T M M M M Mist, sprinkles
10/30/2016 7:00 AM 0.09 M M M M Lt rain showers
10/31/2016 7:00 AM T M M M M Mist, sprinkles
11/1/2016 7:00 AM 0.08 M M M M Fog, mist, Lt rain
11/2/2016 7:00 AM 0.00 0.0 M M M
11/3/2016 7:00 AM 0.00 0.0 M M M
11/4/2016 7:00 AM 0.00 0.0 M M M
11/5/2016 7:00 AM 0.00 0.0 M M M
11/6/2016 7:00 AM 0.00 0.0 M M M
11/7/2016 7:00 AM 0.00 0.0 M M M
11/8/2016 7:00 AM 0.00 0.0 M M M Gusty NW wind after 10 PM thru the night, peak wind 33 MPH
11/9/2016 7:00 AM 0.00 0.0 M M M Gusty NW wind to 30 mph continue until 11 AM. Lt frost on rooftops at sunrise - min temp 36.
11/10/2016 7:00 AM 0.00 0.0 M M M
11/11/2016 7:00 AM 0.00 0.0 M M M
11/12/2016 7:00 AM 0.00 0.0 M M M
11/13/2016 7:00 AM 0.00 0.0 M M M
11/14/2016 7:00 AM 0.00 0.0 M M M
11/15/2016 7:00 AM 0.00 0.0 M M M Brief cold rain showers began at 7 AM this morning
11/16/2016 7:00 AM 0.06 M M M M Lt rain , sprinkles
11/17/2016 7:00 AM 0.01 M M M M Unknown precip
11/18/2016 7:00 AM 0.35 M M M M Rain, mist
11/19/2016 7:00 AM 1.49 2.0 0.25 2.0 0.25 Snow depth 2 inches on snow board and driveway, 4 inches 75 feet in along lake shore. Mixed rain, ice pellets 9 AM-3PM. Snow, sleet 5-9PM. Storm force NE wind on Lk Superior, sheltered by our wood lots. Dead trees blown down. Wave height 6-10 feet within 1/4 mile of shore, 12+ ft 1 mile offshore. Storm surge 6 ft deep at our boat house deck.
11/20/2016 7:00 AM 0.00 0.0 M 2.0 0.20 Blowing, drifting, scouring of snow cover thru mid-afternoon. Peak wind NW 29 mph.
11/21/2016 7:00 AM 0.00 0.0 M 3.0 M Snow depth adjusted upward after walk-around yard
11/22/2016 7:00 AM 0.00 0.0 M 3.0 M
11/23/2016 7:00 AM 0.21 M M 1.0 M Lt rain, drizzle thru the night, change over to snow 7 AM. 50 pct snow cover 1 nch.
11/24/2016 7:00 AM 0.44 M M 0.0 M Lt rain, occasional mix with snow, sleet. Snow coverage less than 20 percent.
11/25/2016 7:00 AM 0.04 M M M M Brief showers
11/26/2016 7:00 AM 0.00 0.0 M M M
11/27/2016 7:00 AM 0.00 0.0 M M M
11/28/2016 7:00 AM 1.32 M M M M Rain
11/29/2016 7:00 AM 0.64 M M M M Rain
11/30/2016 7:00 AM 0.00 0.0 M M M Lt rain began after 7 AM on Nov 30
12/1/2016 7:00 AM 0.19 M M M M Lt rain showers
12/2/2016 7:00 AM 0.00 0.0 M M M
12/3/2016 7:00 AM 0.00 0.0 M M M
12/4/2016 7:00 AM 0.00 0.0 M M M Lt snowfall began accumulating after Dec 4 7 AM observation.
12/5/2016 7:00 AM 0.19 0.7 M 0.0 M Lt rain snow mix melted by 3 PM
12/6/2016 7:00 AM 0.44 M M M M Lt rain, brief mixed precip
12/7/2016 7:00 AM 0.15 0.6 0.06 0.5 0.06 Rain-snow mix 7-11 AM, snow after 9 PM. Thick glaze ice on driveway and on Highway 61 shoulders after rapid temperature drop 3:30 PM.
12/8/2016 7:00 AM T T M 0.5 M Wind-blown lake mist, glaze ice, snow dusting, Steady wind off Lk Superior SW 15 gusting 24 mph 7 AM- 6 PM
12/9/2016 7:00 AM 0.00 0.0 M 0.5 M Snow flurries, wind-blown ice crystals
12/10/2016 7:00 AM 0.00 0.0 M 0.5 M 60 pct snow cover, min temp 0
12/11/2016 7:00 AM T M M M M New snowfall began at 6:30 AM, turned heavy after 7 AM observation time. First below zero temperature of the season , -1 recorded at 7:30 AM Dec 10.
12/12/2016 7:00 AM 0.39 5.0 0.39 5.0 0.39 Snow, blowing snow. Morning snow less than 50 pct normal liquid content. Evening lake enhanced snow. Peak wind ENE@ 28 mph.
12/13/2016 7:00 AM T T M 3.0 M Windblown snow showers. Windchill -16 to -34 after 9 PM
12/14/2016 7:00 AM 0.00 0.0 M 2.5 M Blowing snow. Peak wind SSW @ 22 mph
12/15/2016 7:00 AM 0.00 0.0 M 2.0 M Blowing snow. Wind NW 15 G 35 mph all day thru 5 AM. Windchill -25 to -34 F
12/16/2016 7:00 AM 0.00 0.0 M 2.0 M Blowing snow and extreme windchill ended 11 AM
12/17/2016 7:00 AM 0.02 0.5 M 2.5 M Lt snow, blowing snow
12/18/2016 7:00 AM 0.00 0.0 M 2.5 M Min temperature -17F
12/19/2016 7:00 AM 0.00 0.0 M 2.5 M Min temp -15 F, Peak wind WNW 22 mph
12/20/2016 7:00 AM T T T 2.5 M Brief snow shower after 5 AM
12/21/2016 7:00 AM 0.06 0.6 0.06 3.0 M Snow showers ended 9 AM. Frequent wind gusts WNW 30+ mph noon- 10 PM, peak gust 35 mph
12/22/2016 7:00 AM 0.39 3.7 0.39 6.5 M Snow:liquid less than 1/2 usual 9:30 AM- 12:30 PM. Snow:liquid 2x usual 2:30-4:30 PM
12/23/2016 7:00 AM 0.00 0.0 M 6.0 1.00
12/24/2016 7:00 AM 0.00 0.0 M 5.5 M
12/25/2016 7:00 AM T M M 4.5 M Windblown snow 3 AM. Wind steady East 19G27 mph. Lake Superior waves SE 5-8 ft near shore
12/26/2016 7:00 AM 0.98 3.5 0.98 7.5 M Snow 5- 8 PM, rain-sleet 8:30 PM - 3 AM, snow depth range 2.5-8 inches. Peak wind E 31 mph
12/27/2016 7:00 AM 0.00 0.0 M 6.5 M Max temp 42, min 10. Freq SW gusts 30+ mph, peak gust 40 mph. Snow cover capped with hard crust of ice.
12/28/2016 7:00 AM 0.00 0.0 M 6.5 M
12/29/2016 7:00 AM 0.15 1.4 0.15 7.5 M Lt snow showers
12/30/2016 7:00 AM 0.00 0.0 M 8.0 M Blowing snow. Peak gust WNW 26 mph
12/31/2016 7:00 AM 0.12 2.0 0.12 10.0 M Lt snow, blowing snow
1/1/2017 7:00 AM 0.00 0.0 M 10.0 M Blowing snow, peak gust WNW 23 mph
1/2/2017 7:00 AM 0.16 1.5 0.16 10.5 M Lt snow, blowing snow, visibility 1/2 mile
1/3/2017 7:00 AM 0.89 7.0 0.89 12.5 M Lt rain at 7 AM obs time. mdt- heavy snow 3-5 PM, Lt snow, blowing snow 7 AM- 1 AM. Temp remained above freezing after 3 PM thru the night.
1/4/2017 7:00 AM T T M 12.0 M Lt rain-drizzle ended 8 AM, temp above freezing until 1 PM, wind chill -28 to -34 after 3 AM. Peak gust NW 31 mph
1/5/2017 7:00 AM 0.00 0.0 M 12.0 M Extreme windchill -28 to -34 until 11 AM, freq gusts NW 35 mph Max temp + 5, Min -13
1/6/2017 7:00 AM 0.00 0.0 M 11.0 M Wind chill -12 to -21, Peak gust W 25 mph
1/7/2017 7:00 AM 0.00 0.0 M 11.0 M Wind chill 0 to -28, Peak gust WNW 32 mph
1/8/2017 7:00 AM 0.00 0.0 M 11.0 M
1/9/2017 7:00 AM 0.09 1.2 0.09 12.0 M Lt snow. Max temp 23, min 4
1/10/2017 7:00 AM 0.01 0.3 0.01 12.0 M Lt powdery snow
1/11/2017 7:00 AM 0.23 2.0 0.23 14.0 M Lt snow. Dangerous wind chill after 3:30 PM wind shift SE to NW. Peak gust 25 mph. Temperature drop 33 to 4 in 3 hours.
1/12/2017 7:00 AM 0.00 0.0 M 14.0 M
1/13/2017 7:00 AM 0.00 0.0 M 14.0 M Extreme wind chill 11 AM- 1 AM, freq wind gusts WNW 30+ mph, nearly calm after 1 AM
1/14/2017 7:00 AM 0.00 0.0 M 14.0 M
1/15/2017 7:00 AM 0.00 0.0 M 13.0 M
1/16/2017 7:00 AM 0.00 0.0 M 13.0 M
1/17/2017 7:00 AM 0.00 0.0 M 11.5 M Top layer of recent snowfall melted. Thick icy layers above and below snow pack make a melted core measurement difficult without breaking the cylinder.
1/18/2017 7:00 AM 0.00 0.0 M 11.0 M Temperature above freezing 24 hours
1/19/2017 7:00 AM 0.00 0.0 M 10.5 M Snow depth range 7 - 13 inches. 8 inches lakeside, 13 inches near the house. Fog at obs time, visibility 1 mile
1/20/2017 7:00 AM 0.00 0.0 M 10.0 M
1/21/2017 7:00 AM 0.37 M M 8.0 M Lt rain
1/22/2017 7:00 AM 0.05 M M 6.0 M Lt rain, drizzle. Snow depth 2-9 inches
1/23/2017 7:00 AM 0.00 0.0 M 5.5 M
1/24/2017 7:00 AM 0.03 M M 5.0 M Drippy rain
1/25/2017 7:00 AM 0.00 0.0 M 3.5 M Snow cover 1-7 inches, 30 pct 1 inch or less
1/26/2017 7:00 AM 0.00 0.0 M 3.5 M
1/27/2017 7:00 AM 0.00 0.0 M 3.5 M
1/28/2017 7:00 AM 0.00 0.0 M 3.0 M
1/29/2017 7:00 AM T T M 3.0 M Snow dusting, not measurable
1/30/2017 7:00 AM 0.00 0.0 M 3.0 M
1/31/2017 7:00 AM 0.09 1.0 0.09 4.0 M Lt snow showers
2/1/2017 7:00 AM 0.00 0.0 M 3.5 M
2/2/2017 7:00 AM 0.00 0.0 M 3.0 M
2/3/2017 7:00 AM 0.00 0.0 M 3.0 M
2/4/2017 7:00 AM 0.00 0.0 M 3.0 M
2/5/2017 7:00 AM 0.30 3.0 0.30 6.0 M Snow
2/6/2017 7:00 AM 0.12 1.8 0.12 6.0 M
2/7/2017 7:00 AM 0.33 4.0 0.33 8.0 M Lt snow, blowing snow continues at 7 AM obs time
2/8/2017 7:00 AM 0.11 2.2 0.11 9.0 M Snow burst 2 PM, 2 inches accumulated in 1/2 hour, followed by scouring, drifting NW wind, peak gust 30 mph
2/9/2017 7:00 AM 0.00 0.0 M 9.0 M
2/10/2017 7:00 AM 0.15 1.5 0.15 8.5 M Lt snow, mixed precip at 7 AM obs time
2/11/2017 7:00 AM 0.05 M M 7.0 M Mixed precip, max temp 40, min 27
2/12/2017 7:00 AM 0.00 0.0 M 7.0 M Wind-blown snow showers, freq gusts WNW 30+ mph, peak gust 37 mph
2/13/2017 7:00 AM 0.00 0.0 M 5.0 M Gusty wind WNW 30+ mph, rapid snow melt
2/14/2017 7:00 AM 0.00 0.0 M 5.0 M Max temp 47, min 30, snow depth range 3 - 7 inches despite above freezing temperature.
2/15/2017 7:00 AM 0.00 0.0 M 5.0 M Gusty NW wind until 10 PM, pk gust 31 mph, max temp 41, min 7
2/16/2017 7:00 AM 0.00 0.0 M 5.0 M Snow showers 3-7 PM
2/17/2017 7:00 AM 0.00 0.0 M 5.0 M
2/18/2017 7:00 AM 0.00 0.0 M 3.0 M Max temp 49, min 30
2/19/2017 7:00 AM 0.00 0.0 M 2.0 M 80 pct snow cover. Max temp 63, min 35
2/20/2017 7:00 AM 0.00 0.0 M 4.0 M Max temp 46, min 38. Snow cover 50 pct. Snow depth average revised to show significant sheltered areas with 4 to 8 inch depth.
2/21/2017 7:00 AM 1.23 M M 2.0 M Hvy thunder showers Noon-4 PM, rain showers until 12 AM. Rainfall rate briefly 2+inches per hour 12:30 PM. 20 pct snow cover within 200 ft of Lake Superior shore, 1-3 inches in sheltered drifted areas.
2/22/2017 7:00 AM 0.00 0.0 M 2.0 M 30 pct snow cover
2/23/2017 7:00 AM 0.24 M M 2.0 M Lt rain 6-10 PM, mixed precip 10 PM -1 AM. 30 Pct snow cover
2/27/2017 7:00 AM 0.00 0.0 M 0.0 M Less than 20 pct snow cover
2/28/2017 7:00 AM 0.12 1.2 0.12 1.0 0.12 Lt snow
3/1/2017 7:00 AM 0.00 0.0 M 1.0 M
3/2/2017 7:00 AM 0.00 0.0 M 1.0 M 70 pct snow cover
3/3/2017 7:00 AM 0.00 0.0 M 1.0 M 50 pct snow cover, gusty NW wind, peak gust 28 mph, Min temp 0
3/4/2017 7:00 AM 0.00 0.0 M 0.0 M 30 pct snow cover, patches of old drifted snow 2-4 inches remain
3/5/2017 7:00 AM 0.00 0.0 M 0.0 M
3/6/2017 7:00 AM 0.04 M M M M Lt rain showers, fog
3/7/2017 7:00 AM 0.48 T M 0.0 M Rain shwrs, drizzle, fog - all day. Brief tstm 3 AM. Snow shwrs after 6 AM
3/8/2017 7:00 AM 0.04 0.5 0.04 0.5 0.04 SW gale, frequent gusts 30+ mph, peak gust 39 mph. Snow showers accumulated only in sheltered areas.
3/9/2017 7:00 AM 0.00 0.0 M M M SW gale shifted west after 7 PM, subsided after 11 PM. Freq gusts 30+ mph, peak gust SW 35 mph.
3/10/2017 7:00 AM 0.00 0.0 M M M Max temp 31, min -6. Peak wind NW @25 mph.
3/11/2017 7:00 AM 0.00 0.0 M M M
3/12/2017 7:00 AM 0.00 0.0 M M M
3/13/2017 7:00 AM 0.00 0.0 M M M
3/14/2017 7:00 AM 0.00 0.0 M M M
3/15/2017 7:00 AM 0.00 0.0 M M M
3/16/2017 7:00 AM 0.00 0.0 M M M
4/2/2017 7:00 AM 0.07 M M M M Lt rain
4/14/2017 7:00 AM 0.01 M M M M
4/16/2017 7:00 AM 0.16 M M M M Lt rain
4/17/2017 7:00 AM 0.08 M M M M Lt rain
4/18/2017 7:00 AM 1.00 M M M M Rain showers
4/19/2017 7:00 AM 0.28 M M M M Rain showers 8 AM-10 PM
4/20/2017 7:00 AM 0.71 M M M M Rain shower
4/22/2017 7:00 AM 0.29 M M M M Rain showers
4/24/2017 7:00 AM 0.03 0.3 0.03 0.0 M Lt snow before 2 AM, melted by sunrise
4/25/2017 7:00 AM 0.01 M M M M Mist at sunrise
4/26/2017 7:00 AM 0.48 M M M M Sprinkles 9 AM- 5 PM, rain showers after 6 PM, mixed rain, ice, snow after 6 AM
4/27/2017 7:00 AM 0.44 0.1 0.12 0.0 0.12 Mixed rain, sleet, ice, snow
4/28/2017 7:00 AM T T M M M Dusting of snow after sunrise
4/29/2017 7:00 AM 0.00 0.0 M M M
4/30/2017 7:00 AM 0.00 0.0 M M M
5/1/2017 7:00 AM 0.00 0.0 M M M
5/2/2017 7:00 AM 0.87 M M M M Lt rain mixed briefly with ice
5/3/2017 7:00 AM 0.00 0.0 M M M
5/4/2017 7:00 AM 0.03 M M M M Lt rain
5/5/2017 7:00 AM 0.04 M M M M Lt rain showers
5/6/2017 7:00 AM 0.00 0.0 M M M
5/7/2017 7:00 AM 0.00 0.0 M M M
5/8/2017 7:00 AM 0.00 0.0 M M M
5/9/2017 7:00 AM 0.00 0.0 M M M
5/10/2017 7:00 AM 0.00 0.0 M M M
5/11/2017 7:00 AM 0.00 0.0 M M M
5/12/2017 7:00 AM 0.00 0.0 M M M
5/13/2017 7:00 AM 0.00 0.0 M M M
5/14/2017 7:00 AM 0.00 0.0 M M M
5/15/2017 7:00 AM 0.02 M M M M Brief shower
5/16/2017 7:00 AM 0.00 0.0 M M M Heavy thunderstorms within 3 miles offshore on Lake Superior
5/17/2017 7:00 AM 0.75 M M M M Thunderstorms, heavy downpour 6 PM, 1/2 inch in 15 minutes.
5/18/2017 7:00 AM 0.79 M M M M Rain, drizzle, hours of dense fog
5/19/2017 7:00 AM 0.00 0.0 M M M
5/20/2017 7:00 AM 0.00 0.0 M M M
6/2/2017 7:00 AM 0.00 0.0 M M M
6/3/2017 7:00 AM 0.00 0.0 M M M Thunder on Lake Superior 2 AM
6/4/2017 7:00 AM 0.00 0.0 M M M
6/5/2017 7:00 AM 0.28 M M M M Thunder showers
6/6/2017 7:00 AM 0.00 0.0 M M M
6/7/2017 7:00 AM 0.00 0.0 M M M
6/8/2017 7:00 AM 0.07 M M M M Thunder showers
6/9/2017 7:00 AM 0.07 M M M M Rain showers
6/10/2017 7:00 AM 0.16 M M M M Thunderstorm 6-7 AM, pea-size hail, constant rumble of thunder half an hour. Dense fog on Lake Superior sunrise to 4 PM.
6/11/2017 7:00 AM 0.00 0.0 M M M 30 degree temperature rise in 15 minutes 5 PM. Max temp 91.
6/12/2017 7:00 AM 0.15 M M M M Rain showers, thunderstorm 11-11:30 AM
6/13/2017 7:00 AM 0.00 0.0 M M M
6/14/2017 7:00 AM 0.82 M M M M Thunderstorms 1-2:30 PM, 10 PM- 3:30 AM, brief heavy downpours 2.4 inches per hour
6/15/2017 7:00 AM 0.04 M M M M Dense fog, drizzle over night
6/16/2017 7:00 AM 0.08 M M M M Dense morning fog, thundershower 1 PM
6/17/2017 7:00 AM 0.01 M M M M Drippy showers
6/18/2017 7:00 AM 0.26 M M M M Thunder showers, soft melting hail 12 - 1:30 PM, brief showers thru 3 AM
6/19/2017 7:00 AM 0.02 M M M M Brief showers
6/20/2017 7:00 AM 0.01 M M M M Misty showers
6/21/2017 7:00 AM 0.01 M M M M Brief shower
6/22/2017 7:00 AM 0.31 M M M M Showers and thunderstorms
6/23/2017 6:00 AM 0.01 M M M M Showers nearby on Lake Superior 7-10 PM
6/24/2017 7:00 AM 0.08 M M M M Very light rain
6/25/2017 7:00 AM 0.10 M M M M Rain showers scattered throughout 24 hours. Heavier showers 6 miles northeast in Cook County persisted.
6/26/2017 7:00 AM 1.52 M M M M Heavy rain showers 11 AM -2 PM, frequent showers through 5:30 AM
6/27/2017 7:00 AM 0.03 M M M M Hvy thunderstorms within 2 miles west thru south, strong down-burst winds
6/28/2017 7:00 AM 0.00 0.0 M M M
6/29/2017 7:00 AM 2.16 M M M M Rain, dense fog, mist after 7 PM
6/30/2017 7:00 AM 0.06 M M M M Drizzle, dense fog along Lake Superior shore lifted after 7 PM
7/1/2017 7:00 AM 0.02 M M M M Light rain showers
7/2/2017 7:00 AM 0.07 M M M M Thunder shower 10 PM, brief showers 11 AM- 7 PM
7/3/2017 7:00 AM 0.00 0.0 M M M
7/4/2017 7:00 AM 0.00 0.0 M M M
7/5/2017 7:00 AM 0.40 M M M M Heavy thunderstorms, dangerous cloud-to-ground, cloud to-water lightning.
7/6/2017 7:00 AM 0.01 M M M M Thunder shower offshore on Lake Superior
7/7/2017 7:00 AM 0.31 M M M M Heavier thunderstorms persisted eastward into Cook County along Highway 61, 11 AM - 7 PM
7/8/2017 7:00 AM 0.25 M M M M Rain showers Noon -2:30 PM, 5:30- 7 PM
7/9/2017 7:00 AM 0.00 0.0 M M M
7/10/2017 7:00 AM 0.00 0.0 M M M Dense fog on Lake Superior after sunrise
7/11/2017 7:00 AM 0.00 0.0 M M M Dense fog continued until 5 PM along Lake Superior shore
7/12/2017 7:00 AM 0.09 M M M M Thunder shower
7/13/2017 7:00 AM 0.30 M M M M Light rain, drizzle throughout 24 hours
7/14/2017 7:00 AM 0.15 M M M M Drizzle, mist
7/15/2017 7:00 AM 0.00 0.0 M M M
7/16/2017 7:00 AM 0.00 0.0 M M M
7/17/2017 7:00 AM 0.00 0.0 M M M
7/18/2017 7:00 AM 0.03 M M M M Heavy thunderstorms within 1 mile, dangerous lightning west thru south 7-10 PM, rain showers north thru east 4-7 AM
7/19/2017 7:00 AM 0.00 0.0 M M M Thunderstorms offshore on Lake Superior 8 AM - 4 PM
7/20/2017 7:00 AM 0.00 0.0 M M M Smoky haze
7/21/2017 7:00 AM 0.00 0.0 M M M
7/22/2017 7:00 AM 0.07 M M M M Heavy thunderstorms within a mile offshore on Lake Superior
7/23/2017 7:00 AM 0.06 M M M M Thunderstorms within a mile north and east
7/24/2017 7:00 AM 0.02 M M M M Mist, drizzle
7/25/2017 7:00 AM 0.00 0.0 M M M Dense lake fog until 1 PM
7/26/2017 7:00 AM 0.00 0.0 M M M
7/27/2017 7:00 AM 0.00 0.0 M M M Max temp 96 at lakeside, above 90 for 6 hours, ten degrees warmer than 200 feet away from lake shore.
7/28/2017 7:00 AM 0.01 M M M M Thunder, dangerous lightning
7/29/2017 7:00 AM 0.00 0.0 M M M
7/30/2017 7:00 AM 0.00 0.0 M M M
7/31/2017 7:00 AM 0.00 0.0 M M M Max temp 89
8/1/2017 7:00 AM T M M M M Misty showers overnight, time unknown
8/2/2017 7:00 AM 0.00 0.0 M M M
8/3/2017 7:00 AM 0.00 0.0 M M M
8/4/2017 7:00 AM 0.63 M M M M Lt rain showers continue at 7 AM obs time
8/5/2017 7:00 AM 0.22 M M M M Heavy thunderstorm 1:30 PM, .2 inch rainfall in 10 minutes, thunder Noon- 6 PM
8/6/2017 7:00 AM 0.09 M M M M Heavy shower 3:30 PM
8/7/2017 7:00 AM 0.00 0.0 M M M
8/8/2017 7:00 AM 0.00 0.0 M M M
8/9/2017 7:00 AM 0.07 M M M M Heavy thundershowers within 1 mile
8/10/2017 7:00 AM 1.42 M M M M Rain thru the night after 10 PM, thunderstorms on Lk Superior 3-6 PM
8/11/2017 7:00 AM 0.13 M M M M Lt rain
8/12/2017 7:00 AM 0.00 0.0 M M M
8/13/2017 7:00 AM 0.00 0.0 M M M
8/14/2017 7:00 AM 0.00 0.0 M M M
8/15/2017 7:00 AM 0.00 0.0 M M M Lake Superior calm until 5 PM. Surface temperature at Little Marais and two miles east near shore 62,
8/16/2017 7:00 AM 0.00 0.0 M M M
8/17/2017 7:00 AM 0.65 M M M M Steady rainfall after 1 AM, brief misty showers 3:30 - 10 PM
8/18/2017 7:00 AM 0.63 M M M M Rain showers ended 2 PM, blowing mist until 5 PM
8/19/2017 7:00 AM 0.06 M M M M Rain showers 9-10 PM and 3 AM
8/20/2017 7:00 AM 0.00 0.0 M M M
8/21/2017 7:00 AM 0.00 0.0 M M M
8/22/2017 7:00 AM 0.20 M M M M Thunderstorms, heavy downpour 6:15 PM, 2.25 in/hr rainfall rate
8/23/2017 7:00 AM 0.14 M M M M Rain showers
8/24/2017 7:00 AM 0.00 0.0 M M M
8/25/2017 7:00 AM 0.00 0.0 M M M
8/26/2017 7:00 AM 0.00 0.0 M M M
8/27/2017 7:00 AM 1.38 M M M M Rainfall continues at 7 AM obs time
8/28/2017 7:00 AM 0.04 M M M M Rain showers ended 8 AM
8/29/2017 7:00 AM 0.00 0.0 M M M Dense fog bank moved onshore from Lk Superior at sunrise
8/30/2017 7:00 AM 0.00 0.0 M M M
8/31/2017 7:00 AM 0.00 0.0 M M M
9/1/2017 7:00 AM 0.00 0.0 M M M
9/2/2017 7:00 AM 1.05 M M M M Heavy rain showers began 10 PM, Heavy thunderstorms, dangerous cloud to ground, cloud to water lightning 1:30- 5-30 AM
9/3/2017 7:00 AM 0.00 0.0 M M M
9/4/2017 7:00 AM 0.32 M M M M Thunderstorms, brief torrential downpours, rainfall rates 2.5 in/hr
9/5/2017 7:00 AM 0.05 M M M M Windblown showers, mist
9/6/2017 7:00 AM 0.04 M M M M Misty showers afternoon
9/7/2017 7:00 AM 0.19 M M M M Heavy showers 4-5:30 PM, mist thru the night
9/8/2017 7:00 AM 0.00 0.0 M M M
9/9/2017 7:00 AM 0.00 0.0 M M M
9/10/2017 7:00 AM 0.00 0.0 M M M
9/11/2017 7:00 AM 0.01 M M M M Sprinkles, shallow ground fog
9/12/2017 7:00 AM 0.00 0.0 M M M Temperature jump 15 degrees in ten minutes 3:30 PM. Temp remained above 80 until 7 PM. Max temp 85.
9/13/2017 7:00 AM 0.00 0.0 M M M
9/14/2017 7:00 AM 0.00 0.0 M M M
9/15/2017 7:00 AM 1.85 M M M M Heavy thunderstorms 8 PM- 3 AM, extreme 5 minute downpour Midnight with tornadic roar overhead, thunderstorms within 2 miles began 7 PM



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
5/21/2017 5/31/2017 3:00 PM 11 1.93 M M
9/16/2017 9/30/2017 7:00 AM 15 2.47 M M Revised total based on greater accumulation in plexiglas cylinder than total recorded by electronic gauge.



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