Viewing archive of Thursday, 21 April 2016 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum flux
35 110 -1B2B6.77

Sunspot regions

Region 12529

Number of
sunspots
Size Class Magn. Class Spot Location
2 -3 230 -370 CKO N10W98

Solar flares on this day

B6.35

Region 12532

Number of
sunspots
Size Class Magn. Class Spot Location
3 30 -10 CAO N06E13
HMIIF
HMIBC

Solar flares on this day

B4.7

Region 12533

Number of
sunspots
Size Class Magn. Class Spot Location
1 60 HSX S02E68
HMIIF
HMIBC

All times in UTC

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Last X-flare2026/03/30X1.5
Last M-flare2026/04/03M1.3
Last geomagnetic storm2026/04/02Kp6- (G2)
Spotless days
Last 365 days3 days
20263 days (3%)
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This day in history*

Solar flares
12001X1.77
22017M8.35
31999M6.2
42001M3.57
52017M1.81
DstG
11979-168G4
21960-151G3
31992-105G2
42004-104G2
51994-103G3
*since 1994

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