Can a Major Geomagnetic and Auroral Disturbance Originate From a Solar Active Region Close to the Limb?

Abstract When forecasting major geomagnetic storms, it is commonly assumed that coronal eruptions near the solar limb are not of concern. We here discuss two sequences of events: the Fátima storms of January 1938 and the Halloween storms of October/November 2003. In both cases, a highly active sunsp...

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Bibliographic Details

Published in:	Space Weather
Main Authors:	Mike Lockwood, Mat J. Owens, Luke A. Barnard, William Brown, Dechen Gyeltshen
Format:	Article
Language:	English
Published:	Wiley 2025-08-01
Subjects:	geomagnetic storms auroral storms flares sunspot groups coronal mass ejections forecasting
Online Access:	https://doi.org/10.1029/2025SW004517