31. The resulting geomagnetic storm was expected to be among the most powerful of its kind. 32. Geomagnetic storms affect also long-haul telephone lines, including undersea cables unless they are fiber optic.33. Geomagnetic storms can mask and distort these signals.34. The explosion also produced a huge CME, but not Earth-oriented, so no geomagnetic storm was expected. 35. The G-scale measures the geomagnetic storm generated when the particle cloud slams into Earth's magnetic field. 36. Several space weather phenomena tend to be associated with or are caused by a geomagnetic storm . 37. :: You could probably pick up fluctuations in the field, such as from geomagnetic storms , though. 38. Frequently, the Earth's magnetosphere is hit by solar flares causing geomagnetic storms , provoking displays of aurorae. 39. For example, 46 of the 70 failures reported in 2003 occurred during the October 2003 geomagnetic storm . 40. During geomagnetic storms two regions of geospace, the radiation belts and the ionosphere, can become strongly disturbed.