Snow event in United States, 7 to 11 September 2020

Name: Snow event in United States, 7 to 11 September 2020
Start: 2020-09-07
End: 2020-09-11
Location: United States

Snow event in United States, 7 to 11 September 2020: 390 records at 161 stations, peak on 9 September 2020. Closed.

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

Key Facts

Snow event in United States, 7 to 11 September 2020 set or tied 390 station records at 161 stations.
It ran from 7 September 2020 to 11 September 2020 (5 days) and its peak day was 9 September 2020.
Status: closed.
Manila set a monthly record snow depth of 40.6 cm (16.0 in) on 10 September 2020.
The busiest day was 9 September 2020 with 196 records.
The oldest broken record in the ranked list had stood for 126 years.

Footprint

7 to 11 September 2020

The area covered by Snow event in United States, 7 to 11 September 2020 is outlined, with 16 of the stations that set records marked, coloured by record type. Made with Natural Earth.

Footprint of Snow event in United States, 7 to 11 September 2020: stations that set records in the event
Station	Type	Value	Date
Manila	Record snow depth	40.6 cm (16.0 in)	2020-09-10
El Vado Dam	Record daily snowfall	17.8 cm (7.0 in)	2020-09-09
Chama	Record daily snowfall	25.4 cm (10.0 in)	2020-09-09
Del Norte 3ENE	Record snow depth	33.0 cm (13.0 in)	2020-09-09
Monte Vista 2W	Record daily snowfall	33.0 cm (13.0 in)	2020-09-09
Harrison	Record daily snowfall	15.7 cm (6.2 in)	2020-09-08
Hill City	Record daily snowfall	15.2 cm (6.0 in)	2020-09-08
Alamosa-Bergman Fld	Record snow depth	36.0 cm (14.2 in)	2020-09-09
Buena Vista 2S	Record daily snowfall	14.0 cm (5.5 in)	2020-09-09
Leo 6 SW	Record daily snowfall	20.3 cm (8.0 in)	2020-09-08
Crested Butte	Record daily snowfall	15.0 cm (5.9 in)	2020-09-09
Old Faithful	Record daily snowfall	16.5 cm (6.5 in)	2020-09-08
Manassa	Record daily snowfall	25.4 cm (10.0 in)	2020-09-08
Sargents	Record daily snowfall	12.7 cm (5.0 in)	2020-09-08
Lead	Record daily snowfall	17.8 cm (7.0 in)	2020-09-08
Green Rvr	Record daily snowfall	12.7 cm (5.0 in)	2020-09-08

Records per Day

Peak day 196

Records set or tied each day from 7 September 2020 to 11 September 2020. The most in one day was 196 on 9 September 2020.

Top Records by Margin

Margin over the record replaced

Top records of Snow event in United States, 7 to 11 September 2020 ranked by margin
Manila, 09-10	35.5 cm (14.0 in)
Alamosa-Bergman Fld, 09-09	33.5 cm (13.2 in)
Del Norte 3ENE, 09-09	33.0 cm (13.0 in)
Monte Vista 2W, 09-09	33.0 cm (13.0 in)
Monte Vista 2W, 09-09	30.5 cm (12.0 in)
Manila, 09-10	20.3 cm (8.0 in)
Leo 6 SW, 09-08	17.8 cm (7.0 in)
Alamosa-Bergman Fld, 09-08	17.8 cm (7.0 in)
Del Norte 3ENE, 09-09	17.1 cm (6.7 in)
El Vado Dam, 09-09	17.0 cm (6.7 in)
Old Faithful, 09-08	16.5 cm (6.5 in)
Lead, 09-08	16.5 cm (6.5 in)
Harrison, 09-08	15.7 cm (6.2 in)
Hill City, 09-08	15.2 cm (6.0 in)
Crested Butte, 09-09	15.0 cm (5.9 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

390 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 Snow event in United States, 7 to 11 September 2020
Margin (mm)	Years the old record stood
355	96
170	83
127	106
330	72
305	48
330	79
171	60
157	126
152	110
203	35
140	115
335	60
150	111
178	79
165	113
178	49
102	84
127	120
165	58
127	113
279	121
66	107
102	108
114	124
203	126
102	110
152	83
254	64
127	88
102	124
163	72
97	100
99	105
97	114
305	58
114	91
94	115
178	72
178	72
91	111
76	107
89	100
127	83
86	120
178	31
102	72
76	114
28	117
112	86
76	124
152	126
170	56
51	107
71	114
74	108
165	52
76	111
114	112
64	119
26	111
102	80
13	107
139	58
127	109
64	124
102	121
76	126
203	72
58	124
102	71
76	67
56	112
203	72
152	54
152	54
76	89
51	114
102	115
53	124
127	60
51	114
51	117
76	72
76	64
51	113
51	118
51	107
51	107
127	58
102	76
127	59
102	117
102	72
51	121
178	79
43	108
64	91
102	94
56	121
76	109
102	93
36	124
114	64
38	114
76	126
38	126
25	82
38	110
38	120
152	72
152	42
51	60
79	79
79	79
152	72
71	121
76	117
51	91
254	54
51	89
51	115
25	124
51	102
25	125
25	110
76	94
102	19
178	31
25	103
25	119
152	72
51	109
25	107
43	121
183	19
152	72
41	114
20	105
76	94
25	73
102	79
127	72
127	32
127	32
38	90
152	35
18	109
51	72
96	33
18	119
25	113
13	114
150	72
13	114
13	119
20	121
10	124
13	111
25	102
25	108
25	126
10	124
25	123
13	108
102	58
38	64
51	94
25	119
10	108
13	107
13	124
102	72
8	114
102	79
8	112
25	97
203	61
15	114
102	72
25	72
76	68
51	90
51	90
5	105
102	56
127	72
28	93
102	56
130	72
25	72
3	112
3	112
5	111
3	120
76	66
58	72
50	64
25	81
51	60
102	72

Compared With Other Events

Station records per event

Station records in Snow event in United States, 7 to 11 September 2020 compared with similar events
Snow event in United States, 3 to 27 January 2024	2,190 records
Snow event in United States, 24 November to 22 December 2025	1,539 records
Snow event in United States, 9 to 29 April 2022	1,475 records
Snow event in United States, 27 September to 17 October 2018	1,247 records
Snow event in United States, 26 September to 23 October 2019	1,194 records
Snow event in United States, 7 to 11 September 2020 (this event)	390 records

Every Record Set

20 of 390

Every record set or tied during Snow event in United States, 7 to 11 September 2020, in date order
Date	Station	Record	Value	Margin	Years stood	Significance
2020-09-08	Harrison	Record daily snowfall	15.7 cm (6.2 in)	15.7 cm (6.2 in)	126	71 of 100 (Major)
2020-09-08	Hill City	Record daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	110	70 of 100 (Major)
2020-09-08	Leo 6 SW	Record daily snowfall	20.3 cm (8.0 in)	17.8 cm (7.0 in)	79	67 of 100 (Major)
2020-09-08	Old Faithful	Record daily snowfall	16.5 cm (6.5 in)	16.5 cm (6.5 in)	113	66 of 100 (Major)
2020-09-08	Alamosa-Bergman Fld	Record daily snowfall	22.4 cm (8.8 in)	17.8 cm (7.0 in)	49	66 of 100 (Major)
2020-09-08	Manassa	Record daily snowfall	25.4 cm (10.0 in)	10.2 cm (4.0 in)	84	65 of 100 (Major)
2020-09-08	Sargents	Record daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	120	65 of 100 (Major)
2020-09-08	Lead	Record daily snowfall	17.8 cm (7.0 in)	16.5 cm (6.5 in)	58	65 of 100 (Major)
2020-09-08	Green Rvr	Record daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	113	65 of 100 (Major)
2020-09-09	El Vado Dam	Record daily snowfall	17.8 cm (7.0 in)	17.0 cm (6.7 in)	83	79 of 100 (Major)
2020-09-09	Chama	Record daily snowfall	25.4 cm (10.0 in)	12.7 cm (5.0 in)	106	75 of 100 (Major)
2020-09-09	Del Norte 3ENE	Record snow depth	33.0 cm (13.0 in)	33.0 cm (13.0 in)	72	74 of 100 (Major)
2020-09-09	Monte Vista 2W	Record daily snowfall	33.0 cm (13.0 in)	30.5 cm (12.0 in)	48	74 of 100 (Major)
2020-09-09	Monte Vista 2W	Record snow depth	33.0 cm (13.0 in)	33.0 cm (13.0 in)	79	74 of 100 (Major)
2020-09-09	Del Norte 3ENE	Record daily snowfall	32.3 cm (12.7 in)	17.1 cm (6.7 in)	60	72 of 100 (Major)
2020-09-09	Buena Vista 2S	Record daily snowfall	14.0 cm (5.5 in)	14.0 cm (5.5 in)	115	68 of 100 (Major)
2020-09-09	Alamosa-Bergman Fld	Record snow depth	36.0 cm (14.2 in)	33.5 cm (13.2 in)	60	68 of 100 (Major)
2020-09-09	Crested Butte	Record daily snowfall	15.0 cm (5.9 in)	15.0 cm (5.9 in)	111	67 of 100 (Major)
2020-09-10	Manila	Record snow depth	40.6 cm (16.0 in)	35.5 cm (14.0 in)	96	84 of 100 (Exceptional)
2020-09-10	Manila	Record daily snowfall	40.6 cm (16.0 in)	20.3 cm (8.0 in)	35	70 of 100 (Major)

The daily ledgers keep a limited number of records per day, so this list has 20 of the 390 records the event counts. The counts above use the full total.

Related Headlines

Third party news, headline and link only

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
2020-09-07	16
2020-09-08	110
2020-09-09	196
2020-09-10	57
2020-09-11	11

Margin (mm)	Years the old record stood
355	96
170	83
127	106
330	72
305	48
330	79
171	60
157	126
152	110
203	35
140	115
335	60
150	111
178	79
165	113
178	49
102	84
127	120
165	58
127	113
279	121
66	107
102	108
114	124
203	126
102	110
152	83
254	64
127	88
102	124
163	72
97	100
99	105
97	114
305	58
114	91
94	115
178	72
178	72
91	111
76	107
89	100
127	83
86	120
178	31
102	72
76	114
28	117
112	86
76	124
152	126
170	56
51	107
71	114
74	108
165	52
76	111
114	112
64	119
26	111
102	80
13	107
139	58
127	109
64	124
102	121
76	126
203	72
58	124
102	71
76	67
56	112
203	72
152	54
152	54
76	89
51	114
102	115
53	124
127	60
51	114
51	117
76	72
76	64
51	113
51	118
51	107
51	107
127	58
102	76
127	59
102	117
102	72
51	121
178	79
43	108
64	91
102	94
56	121
76	109
102	93
36	124
114	64
38	114
76	126
38	126
25	82
38	110
38	120
152	72
152	42
51	60
79	79
79	79
152	72
71	121
76	117
51	91
254	54
51	89
51	115
25	124
51	102
25	125
25	110
76	94
102	19
178	31
25	103
25	119
152	72
51	109
25	107
43	121
183	19
152	72
41	114
20	105
76	94
25	73
102	79
127	72
127	32
127	32
38	90
152	35
18	109
51	72
96	33
18	119
25	113
13	114
150	72
13	114
13	119
20	121
10	124
13	111
25	102
25	108
25	126
10	124
25	123
13	108
102	58
38	64
51	94
25	119
10	108
13	107
13	124
102	72
8	114
102	79
8	112
25	97
203	61
15	114
102	72
25	72
76	68
51	90
51	90
5	105
102	56
127	72
28	93
102	56
130	72
25	72
3	112
3	112
5	111
3	120
76	66
58	72
50	64
25	81
51	60
102	72

Margin (mm)	Years the old record stood
355	96
170	83
127	106
330	72
305	48
330	79
171	60
157	126
152	110
203	35
140	115
335	60
150	111
178	79
165	113
178	49
102	84
127	120
165	58
127	113
279	121
66	107
102	108
114	124
203	126
102	110
152	83
254	64
127	88
102	124
163	72
97	100
99	105
97	114
305	58
114	91
94	115
178	72
178	72
91	111
76	107
89	100
127	83
86	120
178	31
102	72
76	114
28	117
112	86
76	124
152	126
170	56
51	107
71	114
74	108
165	52
76	111
114	112
64	119
26	111
102	80
13	107
139	58
127	109
64	124
102	121
76	126
203	72
58	124
102	71
76	67
56	112
203	72
152	54
152	54
76	89
51	114
102	115
53	124
127	60
51	114
51	117
76	72
76	64
51	113
51	118
51	107
51	107
127	58
102	76
127	59
102	117
102	72
51	121
178	79
43	108
64	91
102	94
56	121
76	109
102	93
36	124
114	64
38	114
76	126
38	126
25	82
38	110
38	120
152	72
152	42
51	60
79	79
79	79
152	72
71	121
76	117
51	91
254	54
51	89
51	115
25	124
51	102
25	125
25	110
76	94
102	19
178	31
25	103
25	119
152	72
51	109
25	107
43	121
183	19
152	72
41	114
20	105
76	94
25	73
102	79
127	72
127	32
127	32
38	90
152	35
18	109
51	72
96	33
18	119
25	113
13	114
150	72
13	114
13	119
20	121
10	124
13	111
25	102
25	108
25	126
10	124
25	123
13	108
102	58
38	64
51	94
25	119
10	108
13	107
13	124
102	72
8	114
102	79
8	112
25	97
203	61
15	114
102	72
25	72
76	68
51	90
51	90
5	105
102	56
127	72
28	93
102	56
130	72
25	72
3	112
3	112
5	111
3	120
76	66
58	72
50	64
25	81
51	60
102	72

Margin (mm)	Years the old record stood
355	96
170	83
127	106
330	72
305	48
330	79
171	60
157	126
152	110
203	35
140	115
335	60
150	111
178	79
165	113
178	49
102	84
127	120
165	58
127	113
279	121
66	107
102	108
114	124
203	126
102	110
152	83
254	64
127	88
102	124
163	72
97	100
99	105
97	114
305	58
114	91
94	115
178	72
178	72
91	111
76	107
89	100
127	83
86	120
178	31
102	72
76	114
28	117
112	86
76	124
152	126
170	56
51	107
71	114
74	108
165	52
76	111
114	112
64	119
26	111
102	80
13	107
139	58
127	109
64	124
102	121
76	126
203	72
58	124
102	71
76	67
56	112
203	72
152	54
152	54
76	89
51	114
102	115
53	124
127	60
51	114
51	117
76	72
76	64
51	113
51	118
51	107
51	107
127	58
102	76
127	59
102	117
102	72
51	121
178	79
43	108
64	91
102	94
56	121
76	109
102	93
36	124
114	64
38	114
76	126
38	126
25	82
38	110
38	120
152	72
152	42
51	60
79	79
79	79
152	72
71	121
76	117
51	91
254	54
51	89
51	115
25	124
51	102
25	125
25	110
76	94
102	19
178	31
25	103
25	119
152	72
51	109
25	107
43	121
183	19
152	72
41	114
20	105
76	94
25	73
102	79
127	72
127	32
127	32
38	90
152	35
18	109
51	72
96	33
18	119
25	113
13	114
150	72
13	114
13	119
20	121
10	124
13	111
25	102
25	108
25	126
10	124
25	123
13	108
102	58
38	64
51	94
25	119
10	108
13	107
13	124
102	72
8	114
102	79
8	112
25	97
203	61
15	114
102	72
25	72
76	68
51	90
51	90
5	105
102	56
127	72
28	93
102	56
130	72
25	72
3	112
3	112
5	111
3	120
76	66
58	72
50	64
25	81
51	60
102	72