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Wednesday, April 30, 2025 15:22:10 UTC

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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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G3 (Strong) Geomagnetic Storms Observed on 10 Apr 22

Solar Wind Measurements from the DSCOVR Spacecraft
G3 (Strong) Geomagnetic Storms Observed on 10 Apr 22
published: Monday, April 11, 2022 22:15 UTC

G3 (Strong) Geomagnetic Storms were observed at 10/0510 UTC (1:10am EDT) due to combined influence from a coronal mass ejection (CME) and a negative-polarity coronal hole. The interplanetary magnetic field increased to 19 nT and several hours of sustained negative Bz were recorded. G1 (Minor) Geomagnetic Storms were observed at 10/0740 UTC (3:40am EDT) as the total field decreased to 10 nT. There is a G1 (Minor) Geomagnetic Storm Warning in effect until 10/1500 UTC (11am EDT).