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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G2 - Moderate geomagnetic storm

Observed Kp: 6
Threshold reached: 03:00 UTC

Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future

Gillam, MB

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Iqaluit, NU
Nuuk
Reykjavik
The solar wind speed is currently moderately high (611.4 km/sec.)
The Disturbance Storm Time index predicts moderate storm conditions right now (-71nT)

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Latest alerts

03:15 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 02:59 UTC

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01:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 00:51 UTC

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Friday, 4 April 2025
23:30 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 23:17 UTC

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21:03 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 75GW at 21:49 UTC


13:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 13:07 UTC

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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/01M2.5
Last geomagnetic storm2025/04/04Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025143 +8.8
Last 30 days129.8 -16.3

This day in history*

Solar flares
12001X1.21
22001M7.3
32001M4.52
42013M3.28
52004M2.47
DstG
11993-165G3
21968-112G3
31978-109G1
41984-108G2
51989-101G2
*since 1994

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