Viewing archive of Saturday, 12 October 2013 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
106 -90B8.43C7.819

Sunspot regions

Region 11857

Number of
sunspots
Size Class Magn. Class Spot Location
1 100 HSX S08W51
HMIIF
HMIBC

Region 11861

Number of
sunspots
Size Class Magn. Class Spot Location
19 -4 340 140 DKC S09E08
HMIIF
HMIBC

Solar flares on this day

C2.23 C7.5 C7.78 C2.93 C2.92 C3.46 C2.57 C4.17

Region 11862

Number of
sunspots
Size Class Magn. Class Spot Location
4 -4 30 -10 CRO S23W74
HMIIF
HMIBC

Region 11863

Number of
sunspots
Size Class Magn. Class Spot Location
3 -2 20 -10 CRO S18W22
HMIIF
HMIBC

Region 11864

Number of
sunspots
Size Class Magn. Class Spot Location
3 1 60 HSX S23E21
HMIIF
HMIBC

Region 11865

Number of
sunspots
Size Class Magn. Class Spot Location
14 -1 220 DAO S22E32
HMIIF
HMIBC

Solar flares on this day

C2.14

Region 11867

Number of
sunspots
Size Class Magn. Class Spot Location
1 -1 10 AXX N23W07
HMIIF
HMIBC

All times in UTC

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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026114.3 +28.4
Last 30 days102.4 +48.5

This day in history*

Solar flares
12001X3.14
22002X1.17
32023M2.83
42002M2.34
52000M1.23
DstG
11990-281G4
21982-137G3
31957-124G3
41959-122G4
51960-81G3
*since 1994

Aurora on this day in history

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