Viewing archive of Saturday, 31 October 2015

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Reports
Solar activity
Auroral activity
M1.0 solar flare from sunspot region 2443

Sunspot region 2443 has come to life once more with many C-class solar flares right now and it even managed to produce an impulsive M1.0 (R1) solar flare at 17:52 UTC. This event did not launch a coronal mass ejection.

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Coronal hole faces Earth

A trans equatorial coronal hole is now facing Earth. This is the same coronal hole that was responsible for a strong G3 geomagnetic storm on 7 October 2015.

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Space weather facts

Last X-flare2026/02/04X4.21
Last M-flare2026/03/28M1.3
Last geomagnetic storm2026/03/25Kp5+ (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
February 202678.2 -34.3
March 202685.2 +7
Last 30 days85.2 +8.6

This day in history*

Solar flares
12001X2.45
22014X1.45
32023X1.2
42024M3.2
52001M3.13
DstG
11959-154G3
21979-129G3
31989-125G3
41957-121G4
51984-86G2
*since 1994

Aurora on this day in history

No observations submitted for this day in history. If you've observed the aurora and you have some amazing photos to show off, submit your observations now!
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