Table 1 Historical hazardous RC-type GIC events
Date | −Dst (nT) | dB/dt (nT/h) | Note |
|---|---|---|---|
2 September 1859 | 850a (900b) | 600 | Historically largest storm |
15 May 1921 | 825–900b | >400 | Low-latitude aurorasc |
13, 14 March 1989 | 589 | 130 | Largest storm in the space age since 1957 |
29, 30 October 2003 | 353, 389 | 100 | GIC hazardous superstorms |