Viewing archive of Thursday, 21 July 2011 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum flux
56 -230B2.57B5.18

Sunspot regions

Region 11250

Number of
sunspots
Size Class Magn. Class Spot Location
1 30 -70 HSX S26W90

Region 11251

Number of
sunspots
Size Class Magn. Class Spot Location
1 70 -20 HSX N17W49

Region 11254

Number of
sunspots
Size Class Magn. Class Spot Location
14 2 110 30 CSO S22W17

Solar flares on this day

B4.04

Region 11258

Number of
sunspots
Size Class Magn. Class Spot Location
1 -3 20 -20 HRX N12W65

Region 11259

Number of
sunspots
Size Class Magn. Class Spot Location
12 9 80 -20 CSO N25E42

All times in UTC

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Last X-flare2026/03/30X1.5
Last M-flare2026/04/04M1.0
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 2026122.8 +36.9
Last 30 days99.9 +42.1

This day in history*

Solar flares
12006M1.39
22002M1.38
31997C9.01
42002C8.7
52002C6.29
DstG
12000-292G4
21995-149G4
31977-95G3
41989-85G1
51960-76G1
*since 1994

Aurora on this day in history

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