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The strong solar flare and CME last night are associated with region 4100 facing Earth as shown in the (hand-drawn!) Solar Synoptic Map published daily by NASA/NOAA SWPC.

An image of the Sun taken by the NASA Solar Dynamics Observatory (SDO) around 04:28 UTC, shortly after the start of the eruption, is shown below.

https://www.swpc.noaa.gov/products/solar-synoptic-map
Video/animation of Sun SDO data around the eruption time at https://sdo.gsfc.nasa.gov/data/latest48.php?q=0193
#SolarStorm
2/n

1. Map of the earth-facing Sun (Solar Synoptic Map) with active regions marked and named
2. Image of the Sun from the NASA SDO spacecraft around the time of the eruption — 1. Map of the earth-facing Sun (Solar Synoptic Map) with active regions marked and named 2. Image of the Sun from the NASA SDO spacecraft around the time of the eruption

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