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The Carrington storm in 1859 is considered to be the major geomagneticdisturbance related to solar activity. In a recent paper, Cid et al. (2015)discovered a geomagnetic disturbance case with a profile extraordinarilysimilar to the disturbance of the Carrington event at Colaba, but at amid-latitude observatory, leading to a re- interpretation of the 1859 event.Based on those results, this paper performs a deep search for other'Carrington-like' events and analyses interplanetary observations leading tothe ground disturbances which emerged from the systematic analysis. The resultsof this study based on two Carrington-like events (1) reinforce the awarenessabout the possibility of missing hazardous space weather events as the largeH-spike recorded at Colaba by using global geomagnetic indices, (2) argueagainst the role of the ring current as the major current involved inCarrington-like events, leaving field- aligned currents (FACs) as the maincurrent involved, and (3) propose abrupt southward reversals of IMF along withhigh solar wind pressure as the interplanetary trigger of a Carrington-likeevent.

Searching for Carrington-like events and their signatures and triggers