Viewing archive of Sunday, 13 March 2011 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
64 -140B5.43C9.675

Sunspot regions

Region 11166

Number of
sunspots
Size Class Magn. Class Spot Location
29 -18 770 80 EKC N09W52

Solar flares on this day

C9.57 C9.14 C1.01

Region 11169

Number of
sunspots
Size Class Magn. Class Spot Location
17 -9 260 10 EKC N19W22

Solar flares on this day

C1.07 C2.43

Region 11172

Number of
sunspots
Size Class Magn. Class Spot Location
2 20 10 BXO N12E58

All times in UTC

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Last X-flare2026/03/30X1.4
Last M-flare2026/03/28M1.3
Last geomagnetic storm2026/03/25Kp5+ (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
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Monthly mean Sunspot Number
February 202678.2 -34.3
Last 30 days88.6 +15.4

This day in history*

Solar flares
12001M7.89
22017M6.34
32001M5.75
42025M5.6
52024M3.9
DstG
11960-327G4
22001-228G2
31976-218G4
41973-211G4
51989-93G2
*since 1994

Aurora on this day in history

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