Geomagnetic Storms of 1950

76 storms

76 geomagnetic storms of G1 or more began in 1950: 35 G1, 27 G2, 11 G3, 2 G4, 1 G5. The strongest began February 20, 1950 and reached Kp 9-, rank 61 of every storm since 1932.

By month

Every storm of 1950

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

Began (UTC)	Level	Peak Kp	Hours	Highest daily Ap
Jan 24, 15:00	G3 Strong	7-	9	42
Feb 2, 06:00	G2 Moderate	6-	3	27
Feb 20, 15:00	G5 Extreme	9-	24	79
Feb 23, 09:00	G3 Strong	7	24	49
Mar 7, 06:00	G1 Minor	5	3	22
Mar 15, 00:00	G2 Moderate	6-	6	21
Mar 19, 06:00	G3 Strong	7+	15	84
Mar 21, 09:00	G1 Minor	5	21	27
Mar 24, 00:00	G1 Minor	5+	9	24
Mar 27, 00:00	G1 Minor	5	6	39
Mar 27, 18:00	G1 Minor	5	6	39
Apr 1, 03:00	G2 Moderate	6-	3	41
Apr 1, 18:00	G1 Minor	5+	15	41
Apr 2, 21:00	G1 Minor	5+	3	35
Apr 3, 18:00	G1 Minor	5+	15	31
Apr 5, 03:00	G3 Strong	7-	21	53
Apr 12, 06:00	G1 Minor	5	3	20
Apr 15, 06:00	G1 Minor	5	3	19
Apr 20, 03:00	G2 Moderate	6-	3	24
Apr 24, 03:00	G2 Moderate	6-	6	33
Apr 30, 03:00	G1 Minor	5+	15	33
May 2, 21:00	G2 Moderate	6	9	43
May 3, 18:00	G2 Moderate	6-	6	43
May 4, 21:00	G1 Minor	5+	6	23
May 15, 18:00	G1 Minor	5+	3	23
May 22, 12:00	G1 Minor	5	3	19
May 23, 15:00	G1 Minor	5+	3	33
May 27, 12:00	G3 Strong	7	24	63
Jun 6, 03:00	G2 Moderate	6	15	38
Jun 9, 03:00	G1 Minor	5+	3	26
Jun 23, 18:00	G2 Moderate	6+	18	44
Jun 29, 15:00	G3 Strong	7-	15	39
Jul 3, 21:00	G2 Moderate	6	9	29
Jul 11, 12:00	G3 Strong	7	24	47
Jul 13, 09:00	G1 Minor	5	3	25
Jul 24, 03:00	G2 Moderate	6+	30	40
Aug 2, 18:00	G1 Minor	5	3	21
Aug 7, 18:00	G4 Severe	8-	18	71
Aug 9, 21:00	G1 Minor	5+	3	38
Aug 10, 12:00	G2 Moderate	6+	12	42
Aug 12, 03:00	G1 Minor	5	6	29
Aug 14, 12:00	G1 Minor	5+	3	23
Aug 19, 00:00	G4 Severe	8+	36	136
Aug 21, 06:00	G1 Minor	5+	3	19
Sep 3, 12:00	G3 Strong	7	21	56
Sep 4, 21:00	G2 Moderate	6+	42	64
Sep 8, 06:00	G2 Moderate	6-	21	41
Sep 10, 00:00	G1 Minor	5	3	22
Sep 11, 03:00	G1 Minor	5+	3	21
Sep 16, 15:00	G1 Minor	5+	3	20
Sep 19, 09:00	G2 Moderate	6-	21	38
Sep 23, 18:00	G1 Minor	5+	9	40
Sep 24, 15:00	G2 Moderate	6+	9	40
Sep 25, 15:00	G2 Moderate	6-	9	37
Sep 26, 18:00	G1 Minor	5	3	17
Oct 1, 03:00	G3 Strong	7-	102	79
Oct 5, 21:00	G1 Minor	5	3	37
Oct 7, 00:00	G1 Minor	5	3	34
Oct 7, 15:00	G1 Minor	5	3	34
Oct 14, 00:00	G2 Moderate	6	30	44
Oct 16, 06:00	G2 Moderate	6	12	44
Oct 28, 03:00	G3 Strong	7+	114	90
Nov 4, 06:00	G2 Moderate	6+	12	45
Nov 10, 06:00	G2 Moderate	6+	9	40
Nov 12, 06:00	G1 Minor	5+	3	25
Nov 22, 15:00	G2 Moderate	6-	9	22
Nov 25, 00:00	G3 Strong	7-	63	64
Nov 28, 03:00	G1 Minor	5+	3	41
Nov 28, 18:00	G2 Moderate	6-	3	41
Dec 12, 18:00	G1 Minor	5+	9	39
Dec 13, 18:00	G2 Moderate	6-	12	39
Dec 14, 18:00	G2 Moderate	6	6	37
Dec 20, 21:00	G1 Minor	5	3	13
Dec 22, 15:00	G2 Moderate	6+	18	35
Dec 24, 15:00	G2 Moderate	6+	3	36
Dec 26, 09:00	G1 Minor	5	3	29

1949 1951 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.