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M5.1+M1.0 solar flares from sunspot regions 2172+2173

We talked yesterday about how close together sunspot regions 2172 and 2173 are and that they might interact with each other. Well, they did not disappoint! Both sunspot regions worked together to produce an M5.1 solar flare (R2-moderate radio blackout) that peaked at 02:58 UTC on 28 September.

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Incoming & Unnumbered Active Regions 16 AR4294 / 4296 / 4298 312 50 mhz F2 75 AR 4299 24 Current Farside Activity 236

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