Viewing archive of Wednesday, 20 May 2015 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
61 -230 -1B3.86C2.343

Sunspot regions

Region 12339

Number of
sunspots
Size Class Magn. Class Spot Location
1 70 HSX N11W0*

Region 12341

Number of
sunspots
Size Class Magn. Class Spot Location
1 -1 10 -60 AXX S20W83
HMIIF
HMIBC

Region 12342

Number of
sunspots
Size Class Magn. Class Spot Location
3 90 20 CAO N16W73
HMIIF
HMIBC

Region 12344

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 -10 CRO S10W53
HMIIF
HMIBC

Region 12348

Number of
sunspots
Size Class Magn. Class Spot Location
2 80 -10 HAX S10W06
HMIIF
HMIBC

Region 12349

Number of
sunspots
Size Class Magn. Class Spot Location
3 1 10 BXO S21E18
HMIIF
HMIBC

Solar flares on this day

C1.07 C2.3

Region 12350

Number of
sunspots
Size Class Magn. Class Spot Location
1 -1 10 AXX S15E07
HMIIF
HMIBC

Region 12351

Number of
sunspots
Size Class Magn. Class Spot Location
3 10 BXO N22E49
HMIIF
HMIBC

Solar flares on this day

C1.94 B7.94

All times in UTC

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Last X-flare2025/12/08X1.1
Last M-flare2025/12/08M1.8
Last geomagnetic storm2025/12/04Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 202591.8 -22.8
December 2025162.7 +70.9
Last 30 days108 +13.3

This day in history*

Solar flares
12024X2.2
22025X1.1
32023M5.49
42001M4.87
52025M2.4
DstG
11993-95G2
21982-78G1
31960-70G1
41976-67G1
52013-66G2
*since 1994

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