Viewing archive of Saturday, 28 March 2015 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
82 -271 1C1.13C3.4810

Sunspot regions

Region 12303

Number of
sunspots
Size Class Magn. Class Spot Location
1 -1 50 -20 CAO N18W66
HMIIF
HMIBC

Solar flares on this day

C1.65 C1.73 C3.43 C2.59

Region 12305

Number of
sunspots
Size Class Magn. Class Spot Location
17 1 410 20 EKI S09W10
HMIIF
HMIBC

Solar flares on this day

C3.14 C2.91

Region 12307

Number of
sunspots
Size Class Magn. Class Spot Location
3 -2 10 -20 BXO S19W39
HMIIF
HMIBC

Region 12309

Number of
sunspots
Size Class Magn. Class Spot Location
2 60 DAO N14W79
HMIIF
HMIBC

Region 12310

Number of
sunspots
Size Class Magn. Class Spot Location
2 10 BXO N04E01
HMIIF
HMIBC

Solar flares on this day

C2.2 C2.88

Region 12312

Number of
sunspots
Size Class Magn. Class Spot Location
1 -3 10 -10 AXX N08E12
HMIIF
HMIBC

Solar flares on this day

C1.48 C1.85

Region 12313

Number of
sunspots
Size Class Magn. Class Spot Location
1 30 -20 HSX N17E26
HMIIF
HMIBC

Region 12314

Number of
sunspots
Size Class Magn. Class Spot Location
2 -1 20 CRO S21E54
HMIIF
HMIBC

All times in UTC

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Space weather facts

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%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 2026141 +55.1
Last 30 days94.6 +27

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

Aurora on this day in history

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