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R1 (Minor) Radio Blackout Impacts
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HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
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G1 (minor) Geomagnetic Storm Watch for 18 March

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G1 (minor) Geomagnetic Storm Watch for 18 March
published: Tuesday, March 17, 2015 14:52 UTC

A G1 (minor) geomagnetic storm Watch has been issued for 18 March in response to two recently observed CMEs. The combined arrivals are expected to transit the magnetosphere protecting Earth and make first impact on late 17 March. The G1 magnetic response is expected to occur during the first few hours on the 18th. Standby for more details