Geomagnetic Storms of 1951

94 storms

94 geomagnetic storms of G1 or more began in 1951: 37 G1, 39 G2, 12 G3, 4 G4, 2 G5. The strongest began September 25, 1951 and reached Kp 9-, rank 55 of every storm since 1932.

By month

Every storm of 1951

Times are UT, when the first block at Kp 5 or more began.

Began (UTC)	Level	Peak Kp	Hours	Highest daily Ap
Jan 3, 03:00	G1 Minor	5	3	16
Jan 11, 00:00	G1 Minor	5	3	19
Jan 21, 21:00	G2 Moderate	6	27	54
Jan 31, 03:00	G3 Strong	7-	9	49
Feb 1, 00:00	G1 Minor	5	3	24
Feb 6, 00:00	G2 Moderate	6	6	31
Feb 8, 18:00	G1 Minor	5+	3	22
Feb 10, 21:00	G1 Minor	5	3	24
Feb 12, 00:00	G1 Minor	5+	6	37
Feb 12, 18:00	G1 Minor	5+	3	37
Feb 22, 06:00	G2 Moderate	6+	60	64
Feb 27, 00:00	G3 Strong	7	6	49
Feb 28, 00:00	G3 Strong	7	12	55
Mar 6, 06:00	G1 Minor	5	3	18
Mar 7, 12:00	G2 Moderate	6	33	39
Mar 9, 21:00	G2 Moderate	6	12	36
Mar 11, 15:00	G1 Minor	5	3	27
Mar 12, 09:00	G1 Minor	5	3	29
Mar 13, 12:00	G3 Strong	7-	15	51
Mar 14, 18:00	G2 Moderate	6+	9	42
Mar 17, 06:00	G1 Minor	5+	6	23
Mar 18, 09:00	G1 Minor	5+	3	22
Mar 22, 15:00	G2 Moderate	6	9	45
Mar 23, 18:00	G1 Minor	5	3	29
Mar 29, 06:00	G1 Minor	5+	3	30
Apr 2, 15:00	G2 Moderate	6+	72	51
Apr 6, 03:00	G2 Moderate	6	27	48
Apr 10, 00:00	G1 Minor	5	3	21
Apr 12, 21:00	G2 Moderate	6	27	44
Apr 18, 09:00	G4 Severe	8-	18	66
Apr 20, 15:00	G2 Moderate	6+	21	41
Apr 22, 00:00	G1 Minor	5+	30	42
Apr 24, 06:00	G2 Moderate	6	45	43
May 1, 06:00	G3 Strong	7+	42	68
May 3, 18:00	G1 Minor	5+	9	32
May 9, 21:00	G3 Strong	7+	21	47
May 23, 18:00	G2 Moderate	6	3	27
May 26, 15:00	G3 Strong	7	15	42
May 30, 09:00	G1 Minor	5	3	16
Jun 6, 06:00	G2 Moderate	6-	6	25
Jun 14, 18:00	G2 Moderate	6-	6	22
Jun 17, 21:00	G4 Severe	8	12	54
Jun 19, 03:00	G2 Moderate	6	15	37
Jun 25, 12:00	G2 Moderate	6-	6	37
Jul 1, 18:00	G4 Severe	8-	18	82
Jul 4, 03:00	G1 Minor	5	3	22
Jul 15, 21:00	G2 Moderate	6-	3	17
Jul 16, 12:00	G1 Minor	5	3	24
Jul 17, 09:00	G1 Minor	5	3	24
Jul 18, 15:00	G1 Minor	5	3	25
Jul 22, 06:00	G2 Moderate	6	21	33
Jul 26, 03:00	G1 Minor	5	15	33
Jul 28, 03:00	G1 Minor	5+	15	36
Jul 31, 03:00	G2 Moderate	6	21	48
Aug 1, 15:00	G2 Moderate	6	15	37
Aug 13, 03:00	G2 Moderate	6-	18	43
Aug 15, 18:00	G2 Moderate	6+	18	30
Aug 20, 00:00	G2 Moderate	6-	9	42
Aug 21, 00:00	G2 Moderate	6+	39	54
Aug 23, 21:00	G2 Moderate	6	3	26
Aug 25, 03:00	G2 Moderate	6	30	42
Aug 27, 18:00	G1 Minor	5	3	27
Sep 10, 06:00	G1 Minor	5+	9	33
Sep 11, 18:00	G3 Strong	7	6	40
Sep 12, 21:00	G2 Moderate	6	9	47
Sep 13, 21:00	G2 Moderate	6+	9	47
Sep 15, 06:00	G3 Strong	7-	66	83
Sep 18, 15:00	G1 Minor	5	3	28
Sep 19, 12:00	G4 Severe	8-	123	106
Sep 25, 09:00	G5 Extreme	9-	21	117
Sep 27, 00:00	G2 Moderate	6+	12	48
Sep 28, 00:00	G2 Moderate	6-	3	14
Sep 29, 15:00	G1 Minor	5+	3	22
Oct 7, 15:00	G3 Strong	7-	27	60
Oct 9, 12:00	G2 Moderate	6-	30	42
Oct 13, 09:00	G2 Moderate	6-	15	28
Oct 14, 18:00	G1 Minor	5+	3	24
Oct 17, 00:00	G3 Strong	7	75	91
Oct 22, 15:00	G1 Minor	5	3	22
Oct 26, 21:00	G1 Minor	5+	3	16
Oct 28, 09:00	G5 Extreme	9-	15	98
Nov 3, 21:00	G1 Minor	5+	9	31
Nov 6, 18:00	G1 Minor	5+	9	23
Nov 12, 00:00	G2 Moderate	6-	3	28
Nov 13, 09:00	G2 Moderate	6	45	47
Nov 17, 18:00	G2 Moderate	6-	3	22
Dec 4, 21:00	G1 Minor	5	3	28
Dec 8, 00:00	G2 Moderate	6+	57	55
Dec 11, 06:00	G2 Moderate	6-	3	32
Dec 15, 18:00	G1 Minor	5	3	25
Dec 18, 21:00	G1 Minor	5	3	25
Dec 22, 03:00	G1 Minor	5+	24	37
Dec 28, 03:00	G3 Strong	7	12	68
Dec 31, 09:00	G2 Moderate	6-	18	38

1950 1952 The strongest on record Tonight’s aurora forecast

Sources

Kp and ap from GFZ Helmholtz Centre for Geosciences, Geomagnetic Observatory Niemegk, licensed CC BY 4.0: Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O. and Morschhauser, A., 2021, The geomagnetic Kp index and derived indices of geomagnetic activity, Space Weather, doi:10.1029/2020SW002641; data doi:10.5880/Kp.0001. Storms, levels and aurora reach worked out by WeatherOverTime from those values and NOAA’s space weather scales. Definitive through August 31, 2026; later values are preliminary. Rebuilt 2026-09-24.