Extreme rain in United States, 13 to 21 March 2018

Name: Extreme rain in United States, 13 to 21 March 2018
Start: 2018-03-13
End: 2018-03-21
Location: United States

Extreme rain in United States, 13 to 21 March 2018: 351 records at 329 stations, peak on 16 March 2018. Closed.

Data as of 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Key Facts

Extreme rain in United States, 13 to 21 March 2018 set or tied 351 station records at 329 stations.
It ran from 13 March 2018 to 21 March 2018 (9 days) and its peak day was 16 March 2018.
Status: closed.
Dull Ctr 1SE set a daily record precipitation of 27.9 mm (1.1 in) on 16 March 2018.
The busiest day was 16 March 2018 with 81 records.
The oldest broken record in the ranked list had stood for 128 years.

Footprint

13 to 21 March 2018

The area covered by Extreme rain in United States, 13 to 21 March 2018 is outlined, with 20 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Extreme rain in United States, 13 to 21 March 2018: stations that set records in the event
Station	Type	Value	Date
Dull Ctr 1SE	Record daily precipitation	27.9 mm (1.1 in)	2018-03-16
Wheatland 4N	Record daily precipitation	29.5 mm (1.2 in)	2018-03-16
Rye Patch Dam	Record daily precipitation	42.9 mm (1.7 in)	2018-03-16
Chugwater	Record daily precipitation	30.0 mm (1.2 in)	2018-03-16
Philip AP	Record daily precipitation	28.2 mm (1.1 in)	2018-03-16
Norris Madison Pwr House	Record daily precipitation	25.4 mm (1.0 in)	2018-03-15
Garden Valley	Record daily precipitation	25.4 mm (1.0 in)	2018-03-14
Guernsey Dam #2	Record daily precipitation	30.5 mm (1.2 in)	2018-03-15
Emmett 2 E	Record daily precipitation	18.3 mm (0.7 in)	2018-03-14
Sugar City	Record daily precipitation	15.7 mm (0.6 in)	2018-03-14
Cove 1 E	Record daily precipitation	22.1 mm (0.9 in)	2018-03-14
Union	Record daily precipitation	19.1 mm (0.8 in)	2018-03-14
Elko Rgnl AP	Record daily precipitation	19.3 mm (0.8 in)	2018-03-14
Choteau	Record daily precipitation	17.5 mm (0.7 in)	2018-03-15
Townsend 3SE	Record daily precipitation	14.0 mm (0.6 in)	2018-03-15
Laramie 2NW	Record daily precipitation	21.1 mm (0.8 in)	2018-03-15
Harrisburg 12WNW	Record daily precipitation	16.8 mm (0.7 in)	2018-03-16
Winnemucca AP	Record daily precipitation	20.3 mm (0.8 in)	2018-03-16
Gordon 6N	Record daily precipitation	21.6 mm (0.9 in)	2018-03-17
Arlington	Record daily precipitation	17.8 mm (0.7 in)	2018-03-17

Records per Day

Peak day 81

Records set or tied each day from 13 March 2018 to 21 March 2018. The most in one day was 81 on 16 March 2018.

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 13 to 21 March 2018 ranked by margin
Guernsey Dam #2, 03-15	24.1 mm (0.9 in)
Chugwater, 03-16	21.9 mm (0.9 in)
Rye Patch Dam, 03-16	18.0 mm (0.7 in)
Wheatland 4N, 03-16	16.8 mm (0.7 in)
Dull Ctr 1SE, 03-16	16.0 mm (0.6 in)
Philip AP, 03-16	15.0 mm (0.6 in)
Gordon 6N, 03-17	14.0 mm (0.6 in)
Laramie 2NW, 03-15	13.7 mm (0.5 in)
Townsend 3SE, 03-15	12.0 mm (0.5 in)
Choteau, 03-15	11.7 mm (0.5 in)
Harrisburg 12WNW, 03-16	11.2 mm (0.4 in)
Cove 1 E, 03-14	10.7 mm (0.4 in)
Emmett 2 E, 03-14	10.4 mm (0.4 in)
Norris Madison Pwr House, 03-15	10.2 mm (0.4 in)
Garden Valley, 03-14	10.2 mm (0.4 in)

Margin is how far the new value is beyond the record it replaced. Ties are not shown.

Margin Against Age of the Broken Record

351 records plotted by how far they beat the old record (across) and how many years the old record had stood (up). Long standing records beaten by a wide margin sit in the top right.

Margin against age of the broken record in Extreme rain in United States, 13 to 21 March 2018
Margin (mm)	Years the old record stood
12	88
9	111
16	72
17	72
6	123
18	12
14	95
10	80
9	69
22	31
12	40
15	72
11	93
8	72
10	83
11	76
10	123
14	35
6	128
24	28
13	23
5	91
11	36
4	97
4	109
8	60
9	112
11	0
20	57
3	112
7	112
9	36
12	32
4	112
8	72
1	79
7	93
17	33
8	72
10	51
18	33
13	68
14	72
7	28
34	33
13	41
6	93
9	36
8	37
18	24
2	100
5	91
2	100
10	51
7	69
11	31
1	97
12	23
6	53
6	72
7	33
0	100
4	60
5	44
5	60
14	55
9	55
5	65
13	7
3	87
4	52
3	84
10	36
20	27
15	17
3	79
6	15
15	27
5	52
1	85
22	27
6	7
8	9
10	33
4	72
8	9
6	57
6	55
15	15
8	36
6	35
7	47
10	52
22	21
10	23
12	23
3	60
4	67
2	69
2	72
9	7
8	36
13	31
2	72
6	33
11	24
3	63
8	12
3	60
4	36
3	48
8	32
13	24
7	48
5	60
11	35
1	72
1	67
20	33
3	65
13	36
5	52
5	52
7	23
3	12
11	31
29	1
7	60
1	72
4	36
1	72
3	63
9	23
11	36
6	52
7	29
5	49
4	47
15	31
8	36
10	28
4	51
9	21
9	4
10	36
8	31
15	23
15	23
23	28
3	48
6	15
3	44
4	36
3	33
3	44
2	55
3	48
2	52
6	23
7	31
13	24
2	48
3	51
4	15
2	52
1	52
8	23
7	31
5	35
4	36
0	55
2	47
5	37
5	28
5	33
5	31
4	24
2	52
2	35
4	20
6	36
3	41
1	60
7	12
2	43
4	51
20	7
3	32
0	60
5	27
3	39
3	29
8	31
5	28
2	52
1	51
2	33
1	52
5	31
2	36

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 13 to 21 March 2018 compared with similar events
Extreme rain in United States and Mexico, 23 February to 15 March 2019	2,223 records
Extreme rain in United States, 3 to 19 January 2024	2,133 records
Extreme rain in Australia, 7 to 26 March 2021	2,099 records
Extreme rain in United States and Mexico, 29 September to 19 October 2018	1,970 records
Extreme rain in United States, 19 December 2022 to 13 January 2023	1,941 records
Extreme rain in United States, 13 to 21 March 2018 (this event)	351 records

Every Record Set

20 of 351

Every record set or tied during Extreme rain in United States, 13 to 21 March 2018, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2018-03-14	Garden Valley	Record daily precipitation	25.4 mm (1.0 in)	10.2 mm (0.4 in)	123	55 of 100 (Notable)
2018-03-14	Emmett 2 E	Record daily precipitation	18.3 mm (0.7 in)	10.4 mm (0.4 in)	80	20 of 100 (Routine)
2018-03-14	Sugar City	Record daily precipitation	15.7 mm (0.6 in)	7.8 mm (0.31 in)	72	20 of 100 (Routine)
2018-03-14	Cove 1 E	Record daily precipitation	22.1 mm (0.9 in)	10.7 mm (0.4 in)	76	20 of 100 (Routine)
2018-03-14	Union	Record daily precipitation	19.1 mm (0.8 in)	8.9 mm (0.35 in)	69	20 of 100 (Routine)
2018-03-14	Elko Rgnl AP	Record daily precipitation	19.3 mm (0.8 in)	6.3 mm (0.25 in)	128	20 of 100 (Routine)
2018-03-15	Norris Madison Pwr House	Record daily precipitation	25.4 mm (1.0 in)	10.2 mm (0.4 in)	83	56 of 100 (Notable)
2018-03-15	Guernsey Dam #2	Record daily precipitation	30.5 mm (1.2 in)	24.1 mm (0.9 in)	28	53 of 100 (Notable)
2018-03-15	Choteau	Record daily precipitation	17.5 mm (0.7 in)	11.7 mm (0.5 in)	88	20 of 100 (Routine)
2018-03-15	Townsend 3SE	Record daily precipitation	14.0 mm (0.6 in)	12.0 mm (0.5 in)	40	20 of 100 (Routine)
2018-03-15	Laramie 2NW	Record daily precipitation	21.1 mm (0.8 in)	13.7 mm (0.5 in)	35	20 of 100 (Routine)
2018-03-16	Dull Ctr 1SE	Record daily precipitation	27.9 mm (1.1 in)	16.0 mm (0.6 in)	72	63 of 100 (Major)
2018-03-16	Wheatland 4N	Record daily precipitation	29.5 mm (1.2 in)	16.8 mm (0.7 in)	72	63 of 100 (Major)
2018-03-16	Rye Patch Dam	Record daily precipitation	42.9 mm (1.7 in)	18.0 mm (0.7 in)	12	61 of 100 (Major)
2018-03-16	Chugwater	Record daily precipitation	30.0 mm (1.2 in)	21.9 mm (0.9 in)	31	59 of 100 (Notable)
2018-03-16	Philip AP	Record daily precipitation	28.2 mm (1.1 in)	15.0 mm (0.6 in)	72	58 of 100 (Notable)
2018-03-16	Harrisburg 12WNW	Record daily precipitation	16.8 mm (0.7 in)	11.2 mm (0.4 in)	93	20 of 100 (Routine)
2018-03-16	Winnemucca AP	Record daily precipitation	20.3 mm (0.8 in)	8.6 mm (0.34 in)	111	20 of 100 (Routine)
2018-03-17	Gordon 6N	Record daily precipitation	21.6 mm (0.9 in)	14.0 mm (0.6 in)	95	20 of 100 (Routine)
2018-03-17	Arlington	Record daily precipitation	17.8 mm (0.7 in)	6.4 mm (0.25 in)	123	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 351 records the event counts. The counts above use the full total.

Related Headlines

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Download the Data

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-18. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.

Date	Records
2018-03-13	9
2018-03-14	78
2018-03-15	70
2018-03-16	81
2018-03-17	58
2018-03-18	26
2018-03-19	24
2018-03-20	4
2018-03-21	1

Margin (mm)	Years the old record stood
12	88
9	111
16	72
17	72
6	123
18	12
14	95
10	80
9	69
22	31
12	40
15	72
11	93
8	72
10	83
11	76
10	123
14	35
6	128
24	28
13	23
5	91
11	36
4	97
4	109
8	60
9	112
11	0
20	57
3	112
7	112
9	36
12	32
4	112
8	72
1	79
7	93
17	33
8	72
10	51
18	33
13	68
14	72
7	28
34	33
13	41
6	93
9	36
8	37
18	24
2	100
5	91
2	100
10	51
7	69
11	31
1	97
12	23
6	53
6	72
7	33
0	100
4	60
5	44
5	60
14	55
9	55
5	65
13	7
3	87
4	52
3	84
10	36
20	27
15	17
3	79
6	15
15	27
5	52
1	85
22	27
6	7
8	9
10	33
4	72
8	9
6	57
6	55
15	15
8	36
6	35
7	47
10	52
22	21
10	23
12	23
3	60
4	67
2	69
2	72
9	7
8	36
13	31
2	72
6	33
11	24
3	63
8	12
3	60
4	36
3	48
8	32
13	24
7	48
5	60
11	35
1	72
1	67
20	33
3	65
13	36
5	52
5	52
7	23
3	12
11	31
29	1
7	60
1	72
4	36
1	72
3	63
9	23
11	36
6	52
7	29
5	49
4	47
15	31
8	36
10	28
4	51
9	21
9	4
10	36
8	31
15	23
15	23
23	28
3	48
6	15
3	44
4	36
3	33
3	44
2	55
3	48
2	52
6	23
7	31
13	24
2	48
3	51
4	15
2	52
1	52
8	23
7	31
5	35
4	36
0	55
2	47
5	37
5	28
5	33
5	31
4	24
2	52
2	35
4	20
6	36
3	41
1	60
7	12
2	43
4	51
20	7
3	32
0	60
5	27
3	39
3	29
8	31
5	28
2	52
1	51
2	33
1	52
5	31
2	36

Margin (mm)	Years the old record stood
12	88
9	111
16	72
17	72
6	123
18	12
14	95
10	80
9	69
22	31
12	40
15	72
11	93
8	72
10	83
11	76
10	123
14	35
6	128
24	28
13	23
5	91
11	36
4	97
4	109
8	60
9	112
11	0
20	57
3	112
7	112
9	36
12	32
4	112
8	72
1	79
7	93
17	33
8	72
10	51
18	33
13	68
14	72
7	28
34	33
13	41
6	93
9	36
8	37
18	24
2	100
5	91
2	100
10	51
7	69
11	31
1	97
12	23
6	53
6	72
7	33
0	100
4	60
5	44
5	60
14	55
9	55
5	65
13	7
3	87
4	52
3	84
10	36
20	27
15	17
3	79
6	15
15	27
5	52
1	85
22	27
6	7
8	9
10	33
4	72
8	9
6	57
6	55
15	15
8	36
6	35
7	47
10	52
22	21
10	23
12	23
3	60
4	67
2	69
2	72
9	7
8	36
13	31
2	72
6	33
11	24
3	63
8	12
3	60
4	36
3	48
8	32
13	24
7	48
5	60
11	35
1	72
1	67
20	33
3	65
13	36
5	52
5	52
7	23
3	12
11	31
29	1
7	60
1	72
4	36
1	72
3	63
9	23
11	36
6	52
7	29
5	49
4	47
15	31
8	36
10	28
4	51
9	21
9	4
10	36
8	31
15	23
15	23
23	28
3	48
6	15
3	44
4	36
3	33
3	44
2	55
3	48
2	52
6	23
7	31
13	24
2	48
3	51
4	15
2	52
1	52
8	23
7	31
5	35
4	36
0	55
2	47
5	37
5	28
5	33
5	31
4	24
2	52
2	35
4	20
6	36
3	41
1	60
7	12
2	43
4	51
20	7
3	32
0	60
5	27
3	39
3	29
8	31
5	28
2	52
1	51
2	33
1	52
5	31
2	36

Margin (mm)	Years the old record stood
12	88
9	111
16	72
17	72
6	123
18	12
14	95
10	80
9	69
22	31
12	40
15	72
11	93
8	72
10	83
11	76
10	123
14	35
6	128
24	28
13	23
5	91
11	36
4	97
4	109
8	60
9	112
11	0
20	57
3	112
7	112
9	36
12	32
4	112
8	72
1	79
7	93
17	33
8	72
10	51
18	33
13	68
14	72
7	28
34	33
13	41
6	93
9	36
8	37
18	24
2	100
5	91
2	100
10	51
7	69
11	31
1	97
12	23
6	53
6	72
7	33
0	100
4	60
5	44
5	60
14	55
9	55
5	65
13	7
3	87
4	52
3	84
10	36
20	27
15	17
3	79
6	15
15	27
5	52
1	85
22	27
6	7
8	9
10	33
4	72
8	9
6	57
6	55
15	15
8	36
6	35
7	47
10	52
22	21
10	23
12	23
3	60
4	67
2	69
2	72
9	7
8	36
13	31
2	72
6	33
11	24
3	63
8	12
3	60
4	36
3	48
8	32
13	24
7	48
5	60
11	35
1	72
1	67
20	33
3	65
13	36
5	52
5	52
7	23
3	12
11	31
29	1
7	60
1	72
4	36
1	72
3	63
9	23
11	36
6	52
7	29
5	49
4	47
15	31
8	36
10	28
4	51
9	21
9	4
10	36
8	31
15	23
15	23
23	28
3	48
6	15
3	44
4	36
3	33
3	44
2	55
3	48
2	52
6	23
7	31
13	24
2	48
3	51
4	15
2	52
1	52
8	23
7	31
5	35
4	36
0	55
2	47
5	37
5	28
5	33
5	31
4	24
2	52
2	35
4	20
6	36
3	41
1	60
7	12
2	43
4	51
20	7
3	32
0	60
5	27
3	39
3	29
8	31
5	28
2	52
1	51
2	33
1	52
5	31
2	36