Viewing archive of Thursday, 28 July 2011 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
84 302 1B7.71C7.6716

Sunspot regions

Region 11260

Number of
sunspots
Size Class Magn. Class Spot Location
15 7 110 -10 DSI N18E30

Solar flares on this day

C3.66 C7.49 C3.27 C2.29 C3.85 C1.29 C2.14 C7.67 C3.54 C5.1

Region 11261

Number of
sunspots
Size Class Magn. Class Spot Location
5 3 250 50 DKO N15E60

Solar flares on this day

C2.28

Region 11262

Number of
sunspots
Size Class Magn. Class Spot Location
4 20 DSO N16W38

Solar flares on this day

C2.73

All times in UTC

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Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/03Kp7- (G3)
Spotless days
Last 365 days3 days
20263 days (3%)
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March 202685.9 +7.7
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Last 30 days93.7 +33.5

This day in history*

Solar flares
12001X20.6
22000M6.14
32002M5.32
42024M4.02
52000M3.24
DstG
11971-143G3
21961-118G4
31989-95G1
41990-80G1
51973-71
*since 1994

Aurora on this day in history

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