Every storm since 1932

Geomagnetic Storms of 1988

35 storms

35 geomagnetic storms of G1 or more began in 1988: 19 G1, 10 G2, 4 G3, 2 G4, 0 G5. The strongest began April 3, 1988 and reached Kp 8, rank 154 of every storm since 1932.

By month

Every storm of 1988

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

Began (UTC)LevelPeak KpHoursHighest daily Ap
Jan 2, 09:00G1 Minor5+1229
Jan 4, 21:00G1 Minor5+314
Jan 6, 15:00G2 Moderate61231
Jan 12, 12:00G1 Minor5321
Jan 14, 03:00G3 Strong7+3363
Feb 5, 06:00G1 Minor5329
Feb 21, 21:00G3 Strong7+3397
Mar 8, 03:00G1 Minor5626
Mar 26, 18:00G3 Strong7949
Mar 27, 18:00G1 Minor5+334
Mar 28, 18:00G2 Moderate63634
Apr 3, 06:00G4 Severe84578
Apr 5, 21:00G2 Moderate6+1549
Apr 22, 03:00G1 Minor5+2444
May 5, 21:00G3 Strong7+24106
May 17, 12:00G1 Minor51524
Jun 25, 15:00G1 Minor5327
Jun 29, 18:00G1 Minor5326
Jul 16, 12:00G1 Minor5322
Jul 21, 06:00G2 Moderate6-626
Aug 20, 12:00G1 Minor5317
Aug 22, 00:00G2 Moderate6624
Sep 11, 06:00G2 Moderate62151
Sep 18, 00:00G2 Moderate6634
Sep 18, 21:00G1 Minor5+334
Oct 6, 00:00G1 Minor5339
Oct 6, 15:00G2 Moderate6-639
Oct 10, 06:00G4 Severe8-1885
Oct 18, 15:00G1 Minor5330
Nov 2, 15:00G1 Minor5+630
Nov 30, 09:00G2 Moderate6+937
Dec 12, 03:00G1 Minor5314
Dec 16, 15:00G1 Minor5325
Dec 17, 18:00G2 Moderate6+635
Dec 26, 09:00G1 Minor5325

More

19871989The 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.