Viewing archive of Thursday, 13 August 2015 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum flux
51 -171 1B3B8.41

Sunspot regions

Region 12394

Number of
sunspots
Size Class Magn. Class Spot Location
1 30 HSX N12W0*

Region 12396

Number of
sunspots
Size Class Magn. Class Spot Location
23 -5 560 -150 EKC S18W65
HMIIF
HMIBC

Solar flares on this day

B4.33

Region 12398

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 AXX N16W08
HMIIF
HMIBC

Region 12399

Number of
sunspots
Size Class Magn. Class Spot Location
2 -1 10 BXO S16W14
HMIIF
HMIBC

Region 12400

Number of
sunspots
Size Class Magn. Class Spot Location
2 -2 10 BXO N17E22
HMIIF
HMIBC

Solar flares on this day

B8.04

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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