Every storm since 1932

Geomagnetic Storms of 1986

38 storms

38 geomagnetic storms of G1 or more began in 1986: 23 G1, 9 G2, 4 G3, 0 G4, 2 G5. The strongest began February 7, 1986 and reached Kp 9, rank 9 of every storm since 1932.

By month

Every storm of 1986

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

Began (UTC)LevelPeak KpHoursHighest daily Ap
Jan 1, 12:00G1 Minor5325
Jan 6, 21:00G2 Moderate6+932
Jan 21, 00:00G2 Moderate6-327
Jan 21, 18:00G1 Minor5327
Jan 25, 18:00G1 Minor5+326
Jan 27, 03:00G1 Minor5+1237
Feb 7, 09:00G5 Extreme960202
Feb 21, 21:00G1 Minor5+327
Feb 23, 00:00G1 Minor5+335
Feb 23, 15:00G1 Minor5335
Feb 26, 15:00G2 Moderate6-326
Feb 28, 15:00G1 Minor5625
Mar 6, 12:00G2 Moderate6-1533
Mar 7, 21:00G1 Minor5633
Mar 22, 00:00G1 Minor5322
Mar 25, 18:00G1 Minor5+327
May 2, 12:00G3 Strong7+2143
May 4, 12:00G1 Minor5317
May 5, 21:00G3 Strong7-2767
Jun 27, 12:00G1 Minor5+1828
Jul 24, 21:00G2 Moderate6315
Jul 25, 21:00G2 Moderate6-317
Jul 27, 09:00G1 Minor5316
Aug 21, 09:00G1 Minor5929
Aug 22, 06:00G1 Minor5+329
Aug 25, 00:00G1 Minor5317
Aug 30, 18:00G1 Minor5+927
Sep 11, 21:00G5 Extreme9-1589
Sep 19, 00:00G1 Minor5321
Sep 20, 21:00G1 Minor5318
Sep 23, 03:00G2 Moderate62143
Sep 25, 12:00G1 Minor5+1527
Oct 2, 15:00G1 Minor5+323
Oct 13, 18:00G3 Strong7-1231
Nov 3, 21:00G2 Moderate6+3367
Nov 23, 21:00G2 Moderate6-946
Nov 24, 18:00G3 Strong7-2749
Dec 13, 21:00G1 Minor5312

More

19851987The strongest on recordTonight’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.