Viewing archive of Thursday, 31 October 2013 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxCM
128 -41B8.43M2.8151

Sunspot regions

Region 11875

Number of
sunspots
Size Class Magn. Class Spot Location
10 420 EKC N06W0*
HMIIF
HMIBC

Solar flares on this day

C1.47

Region 11877

Number of
sunspots
Size Class Magn. Class Spot Location
2 -7 160 -150 DAO S13W81
HMIIF
HMIBC

Solar flares on this day

M2.81

Region 11879

Number of
sunspots
Size Class Magn. Class Spot Location
2 80 CAO S13W69
HMIIF
HMIBC

Region 11882

Number of
sunspots
Size Class Magn. Class Spot Location
19 -15 250 -110 DKO S09W06
HMIIF
HMIBC

Region 11883

Number of
sunspots
Size Class Magn. Class Spot Location
1 -1 10 AXX N04E18
HMIIF
HMIBC

Region 11884

Number of
sunspots
Size Class Magn. Class Spot Location
15 -7 460 120 EKC S11E24
HMIIF
HMIBC

Solar flares on this day

C1.42 C1.73

Region 11885

Number of
sunspots
Size Class Magn. Class Spot Location
5 -1 200 10 CAO S18E23
HMIIF
HMIBC

Solar flares on this day

C1.98

Region 11886

Number of
sunspots
Size Class Magn. Class Spot Location
7 1 50 40 DAO N15W23
HMIIF
HMIBC

Region 11887

Number of
sunspots
Size Class Magn. Class Spot Location
1 20 HSX N21E63
HMIIF
HMIBC

All times in UTC

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Space weather facts

Last X-flare2026/02/04X4.3
Last M-flare2026/02/05M1.1
Last geomagnetic storm2026/02/05Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
December 2025124 +32.2
February 2026140.8 +16.8
Last 30 days124.4 +17

This day in history*

Solar flares
12025M7.6
22010M4.21
32024M4.2
42025M2.31
52024M2.2
DstG
11994-126G2
21981-123G3
31983-104G2
41982-101G1
51980-83G1
*since 1994

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