Extreme rain in United States, 14 to 21 February 2018

Name: Extreme rain in United States, 14 to 21 February 2018
Start: 2018-02-14
End: 2018-02-21
Location: United States

Extreme rain in United States, 14 to 21 February 2018: 213 records at 196 stations, peak on 18 February 2018. Closed.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Key Facts

Extreme rain in United States, 14 to 21 February 2018 set or tied 213 station records at 196 stations.
It ran from 14 February 2018 to 21 February 2018 (8 days) and its peak day was 18 February 2018.
Status: closed.
Porthill set a daily record precipitation of 26.7 mm (1.1 in) on 18 February 2018.
The busiest day was 18 February 2018 with 69 records.
The oldest broken record in the ranked list had stood for 116 years.

Footprint

14 to 21 February 2018

The area covered by Extreme rain in United States, 14 to 21 February 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, 14 to 21 February 2018: stations that set records in the event
Station	Type	Value	Date
Monument Peak	Record daily precipitation	27.9 mm (1.1 in)	2018-02-17
Porthill	Record daily precipitation	26.7 mm (1.1 in)	2018-02-18
Placer Basin	Record daily precipitation	25.4 mm (1.0 in)	2018-02-17
Rogers Pass 9 NNE	Record daily precipitation	12.7 mm (0.5 in)	2018-02-14
Albion 1 N	Record daily precipitation	12.7 mm (0.5 in)	2018-02-15
Kalispell Glacier AP	Record daily precipitation	12.4 mm (0.5 in)	2018-02-17
Box Canyon	Record daily precipitation	15.2 mm (0.6 in)	2018-02-17
Galata 16 SW	Record daily precipitation	24.6 mm (1.0 in)	2018-02-18
Gibson 2 NE	Record daily precipitation	15.2 mm (0.6 in)	2018-02-18
Melville 4 W	Record daily precipitation	13.5 mm (0.5 in)	2018-02-18
Sun Rvr 4 S	Record daily precipitation	7.1 mm (0.28 in)	2018-02-18
Valentine	Record daily precipitation	4.1 mm (0.16 in)	2018-02-18
Emblem	Record daily precipitation	6.6 mm (0.26 in)	2018-02-18
Kaycee	Record daily precipitation	6.9 mm (0.27 in)	2018-02-18
Creston	Record daily precipitation	18.3 mm (0.7 in)	2018-02-19
Edgemont	Record daily precipitation	10.2 mm (0.4 in)	2018-02-19
Grantsville 2W	Record daily precipitation	15.5 mm (0.6 in)	2018-02-19
Fontenelle Dam	Record daily precipitation	13.2 mm (0.5 in)	2018-02-19
Leiter 9N	Record daily precipitation	18.3 mm (0.7 in)	2018-02-19
Philip AP	Record daily precipitation	7.4 mm (0.29 in)	2018-02-19

Records per Day

Peak day 69

Records set or tied each day from 14 February 2018 to 21 February 2018. The most in one day was 69 on 18 February 2018.

Top Records by Margin

Margin over the record replaced

Top records of Extreme rain in United States, 14 to 21 February 2018 ranked by margin
Monument Peak, 02-17	15.2 mm (0.6 in)
Placer Basin, 02-17	15.2 mm (0.6 in)
Leiter 9N, 02-19	11.2 mm (0.4 in)
Fontenelle Dam, 02-19	10.2 mm (0.4 in)
Box Canyon, 02-17	10.1 mm (0.4 in)
Albion 1 N, 02-15	9.9 mm (0.39 in)
Melville 4 W, 02-18	9.9 mm (0.39 in)
Edgemont, 02-19	9.9 mm (0.39 in)
Rogers Pass 9 NNE, 02-14	9.4 mm (0.37 in)
Creston, 02-19	8.1 mm (0.32 in)
Gibson 2 NE, 02-18	8.1 mm (0.32 in)
Galata 16 SW, 02-18	7.6 mm (0.30 in)
Grantsville 2W, 02-19	7.4 mm (0.29 in)
Kalispell Glacier AP, 02-17	5.5 mm (0.22 in)
Sun Rvr 4 S, 02-18	4.1 mm (0.16 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

213 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, 14 to 21 February 2018
Margin (mm)	Years the old record stood
10	64
6	99
4	110
11	35
10	32
8	0
3	116
10	32
8	32
4	68
2	100
3	112
8	50
15	32
10	32
9	32
15	20
4	66
10	8
7	47
10	32
20	6
6	50
2	96
1	108
3	80
7	39
2	78
14	38
8	31
24	4
8	38
3	51
7	32
13	23
9	32
3	64
1	92
6	1
3	63
2	79
5	58
13	24
5	18
18	2
1	87
2	66
6	32
4	54
1	79
1	78
5	8
7	32
7	32
4	32
3	35
4	51
1	64
5	32
11	11
1	64
5	38
2	59
13	11
7	38
2	66
8	36
5	35
18	24
5	50
11	4
5	32
2	60
5	35
2	56
1	64
5	32
1	66
3	47
2	64
3	44
13	14
8	27
13	6
3	34
6	6
8	4
5	32
5	2
8	14
2	32
10	2
4	32
8	36
3	44
3	52
1	60
4	24
0	66
3	48
5	31
5	36
3	35
3	27
4	18
2	40
2	47
2	52
1	48
3	32
0	63
1	54
6	14
0	56
4	30
3	44
4	18
10	38
3	40
0	47
8	35
3	38
8	19
5	36
15	20
2	31
3	8
2	44
5	32
10	32
4	16
0	51
1	32
4	19
2	38
3	32
2	32
3	35
4	24
3	35
4	30
1	39
1	35
5	3
7	2
3	36
8	28
1	32
1	32
4	14
2	10
3	32
8	35
2	22
1	39
1	18
2	32
3	8
5	32
5	23
8	24
8	28
3	8
1	38
3	35
3	32
5	32
7	2
0	32
2	19
7	0
3	32
3	35
3	35
8	32
10	23
6	4
2	4
7	4
0	32
2	6
1	32
0	22
3	20
1	28
5	4
8	7
5	22
3	32
0	14
2	7
3	7
1	20
2	4
5	20
0	31
2	7
4	2
3	8
3	24

Compared With Other Events

Station records per event

Station records in Extreme rain in United States, 14 to 21 February 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, 14 to 21 February 2018 (this event)	213 records

Every Record Set

20 of 213

Every record set or tied during Extreme rain in United States, 14 to 21 February 2018, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2018-02-14	Rogers Pass 9 NNE	Record daily precipitation	12.7 mm (0.5 in)	9.4 mm (0.37 in)	32	20 of 100 (Routine)
2018-02-15	Albion 1 N	Record daily precipitation	12.7 mm (0.5 in)	9.9 mm (0.39 in)	64	20 of 100 (Routine)
2018-02-17	Monument Peak	Record daily precipitation	27.9 mm (1.1 in)	15.2 mm (0.6 in)	32	46 of 100 (Notable)
2018-02-17	Placer Basin	Record daily precipitation	25.4 mm (1.0 in)	15.2 mm (0.6 in)	20	45 of 100 (Notable)
2018-02-17	Kalispell Glacier AP	Record daily precipitation	12.4 mm (0.5 in)	5.5 mm (0.22 in)	99	20 of 100 (Routine)
2018-02-17	Box Canyon	Record daily precipitation	15.2 mm (0.6 in)	10.1 mm (0.4 in)	32	20 of 100 (Routine)
2018-02-18	Porthill	Record daily precipitation	26.7 mm (1.1 in)	3.3 mm (0.13 in)	112	46 of 100 (Notable)
2018-02-18	Galata 16 SW	Record daily precipitation	24.6 mm (1.0 in)	7.6 mm (0.30 in)	0	20 of 100 (Routine)
2018-02-18	Gibson 2 NE	Record daily precipitation	15.2 mm (0.6 in)	8.1 mm (0.32 in)	32	20 of 100 (Routine)
2018-02-18	Melville 4 W	Record daily precipitation	13.5 mm (0.5 in)	9.9 mm (0.39 in)	32	20 of 100 (Routine)
2018-02-18	Sun Rvr 4 S	Record daily precipitation	7.1 mm (0.28 in)	4.1 mm (0.16 in)	68	20 of 100 (Routine)
2018-02-18	Valentine	Record daily precipitation	4.1 mm (0.16 in)	4.1 mm (0.16 in)	110	20 of 100 (Routine)
2018-02-18	Emblem	Record daily precipitation	6.6 mm (0.26 in)	1.5 mm (0.06 in)	100	20 of 100 (Routine)
2018-02-18	Kaycee	Record daily precipitation	6.9 mm (0.27 in)	2.8 mm (0.11 in)	116	20 of 100 (Routine)
2018-02-19	Creston	Record daily precipitation	18.3 mm (0.7 in)	8.1 mm (0.32 in)	50	20 of 100 (Routine)
2018-02-19	Edgemont	Record daily precipitation	10.2 mm (0.4 in)	9.9 mm (0.39 in)	8	20 of 100 (Routine)
2018-02-19	Grantsville 2W	Record daily precipitation	15.5 mm (0.6 in)	7.4 mm (0.29 in)	47	20 of 100 (Routine)
2018-02-19	Fontenelle Dam	Record daily precipitation	13.2 mm (0.5 in)	10.2 mm (0.4 in)	32	20 of 100 (Routine)
2018-02-19	Leiter 9N	Record daily precipitation	18.3 mm (0.7 in)	11.2 mm (0.4 in)	35	20 of 100 (Routine)
2018-02-19	Philip AP	Record daily precipitation	7.4 mm (0.29 in)	4.1 mm (0.16 in)	66	20 of 100 (Routine)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 213 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 2026-10-17. Events are found by this site from station records and are not official designations. Records are provisional until reprocessed.

Date	Records
2018-02-14	11
2018-02-15	19
2018-02-16	5
2018-02-17	41
2018-02-18	69
2018-02-19	55
2018-02-20	12
2018-02-21	1

Margin (mm)	Years the old record stood
10	64
6	99
4	110
11	35
10	32
8	0
3	116
10	32
8	32
4	68
2	100
3	112
8	50
15	32
10	32
9	32
15	20
4	66
10	8
7	47
10	32
20	6
6	50
2	96
1	108
3	80
7	39
2	78
14	38
8	31
24	4
8	38
3	51
7	32
13	23
9	32
3	64
1	92
6	1
3	63
2	79
5	58
13	24
5	18
18	2
1	87
2	66
6	32
4	54
1	79
1	78
5	8
7	32
7	32
4	32
3	35
4	51
1	64
5	32
11	11
1	64
5	38
2	59
13	11
7	38
2	66
8	36
5	35
18	24
5	50
11	4
5	32
2	60
5	35
2	56
1	64
5	32
1	66
3	47
2	64
3	44
13	14
8	27
13	6
3	34
6	6
8	4
5	32
5	2
8	14
2	32
10	2
4	32
8	36
3	44
3	52
1	60
4	24
0	66
3	48
5	31
5	36
3	35
3	27
4	18
2	40
2	47
2	52
1	48
3	32
0	63
1	54
6	14
0	56
4	30
3	44
4	18
10	38
3	40
0	47
8	35
3	38
8	19
5	36
15	20
2	31
3	8
2	44
5	32
10	32
4	16
0	51
1	32
4	19
2	38
3	32
2	32
3	35
4	24
3	35
4	30
1	39
1	35
5	3
7	2
3	36
8	28
1	32
1	32
4	14
2	10
3	32
8	35
2	22
1	39
1	18
2	32
3	8
5	32
5	23
8	24
8	28
3	8
1	38
3	35
3	32
5	32
7	2
0	32
2	19
7	0
3	32
3	35
3	35
8	32
10	23
6	4
2	4
7	4
0	32
2	6
1	32
0	22
3	20
1	28
5	4
8	7
5	22
3	32
0	14
2	7
3	7
1	20
2	4
5	20
0	31
2	7
4	2
3	8
3	24

Margin (mm)	Years the old record stood
10	64
6	99
4	110
11	35
10	32
8	0
3	116
10	32
8	32
4	68
2	100
3	112
8	50
15	32
10	32
9	32
15	20
4	66
10	8
7	47
10	32
20	6
6	50
2	96
1	108
3	80
7	39
2	78
14	38
8	31
24	4
8	38
3	51
7	32
13	23
9	32
3	64
1	92
6	1
3	63
2	79
5	58
13	24
5	18
18	2
1	87
2	66
6	32
4	54
1	79
1	78
5	8
7	32
7	32
4	32
3	35
4	51
1	64
5	32
11	11
1	64
5	38
2	59
13	11
7	38
2	66
8	36
5	35
18	24
5	50
11	4
5	32
2	60
5	35
2	56
1	64
5	32
1	66
3	47
2	64
3	44
13	14
8	27
13	6
3	34
6	6
8	4
5	32
5	2
8	14
2	32
10	2
4	32
8	36
3	44
3	52
1	60
4	24
0	66
3	48
5	31
5	36
3	35
3	27
4	18
2	40
2	47
2	52
1	48
3	32
0	63
1	54
6	14
0	56
4	30
3	44
4	18
10	38
3	40
0	47
8	35
3	38
8	19
5	36
15	20
2	31
3	8
2	44
5	32
10	32
4	16
0	51
1	32
4	19
2	38
3	32
2	32
3	35
4	24
3	35
4	30
1	39
1	35
5	3
7	2
3	36
8	28
1	32
1	32
4	14
2	10
3	32
8	35
2	22
1	39
1	18
2	32
3	8
5	32
5	23
8	24
8	28
3	8
1	38
3	35
3	32
5	32
7	2
0	32
2	19
7	0
3	32
3	35
3	35
8	32
10	23
6	4
2	4
7	4
0	32
2	6
1	32
0	22
3	20
1	28
5	4
8	7
5	22
3	32
0	14
2	7
3	7
1	20
2	4
5	20
0	31
2	7
4	2
3	8
3	24

Margin (mm)	Years the old record stood
10	64
6	99
4	110
11	35
10	32
8	0
3	116
10	32
8	32
4	68
2	100
3	112
8	50
15	32
10	32
9	32
15	20
4	66
10	8
7	47
10	32
20	6
6	50
2	96
1	108
3	80
7	39
2	78
14	38
8	31
24	4
8	38
3	51
7	32
13	23
9	32
3	64
1	92
6	1
3	63
2	79
5	58
13	24
5	18
18	2
1	87
2	66
6	32
4	54
1	79
1	78
5	8
7	32
7	32
4	32
3	35
4	51
1	64
5	32
11	11
1	64
5	38
2	59
13	11
7	38
2	66
8	36
5	35
18	24
5	50
11	4
5	32
2	60
5	35
2	56
1	64
5	32
1	66
3	47
2	64
3	44
13	14
8	27
13	6
3	34
6	6
8	4
5	32
5	2
8	14
2	32
10	2
4	32
8	36
3	44
3	52
1	60
4	24
0	66
3	48
5	31
5	36
3	35
3	27
4	18
2	40
2	47
2	52
1	48
3	32
0	63
1	54
6	14
0	56
4	30
3	44
4	18
10	38
3	40
0	47
8	35
3	38
8	19
5	36
15	20
2	31
3	8
2	44
5	32
10	32
4	16
0	51
1	32
4	19
2	38
3	32
2	32
3	35
4	24
3	35
4	30
1	39
1	35
5	3
7	2
3	36
8	28
1	32
1	32
4	14
2	10
3	32
8	35
2	22
1	39
1	18
2	32
3	8
5	32
5	23
8	24
8	28
3	8
1	38
3	35
3	32
5	32
7	2
0	32
2	19
7	0
3	32
3	35
3	35
8	32
10	23
6	4
2	4
7	4
0	32
2	6
1	32
0	22
3	20
1	28
5	4
8	7
5	22
3	32
0	14
2	7
3	7
1	20
2	4
5	20
0	31
2	7
4	2
3	8
3	24