Viewing archive of Friday, 25 September 2015 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
145 593 3B5.14C3.64

Sunspot regions

Region 12415

Number of
sunspots
Size Class Magn. Class Spot Location
1 -2 10 -150 BXO S19W0*

Region 12418

Number of
sunspots
Size Class Magn. Class Spot Location
2 -1 140 -30 HAX S16W77
HMIIF
HMIBC

Region 12420

Number of
sunspots
Size Class Magn. Class Spot Location
19 6 200 -80 EAI N09E22
HMIIF
HMIBC

Region 12421

Number of
sunspots
Size Class Magn. Class Spot Location
5 -2 50 40 CAI N15E05
HMIIF
HMIBC

Region 12422

Number of
sunspots
Size Class Magn. Class Spot Location
9 6 150 140 DAI S20E24
HMIIF
HMIBC

Solar flares on this day

C1.34 C1.37 C1.67 C1.16

Region 12423

Number of
sunspots
Size Class Magn. Class Spot Location
1 10 CRO S08W24
HMIIF
HMIBC

All times in UTC

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Last X-flare2026/02/04X4.21
Last M-flare2026/03/28M1.3
Last geomagnetic storm2026/03/25Kp5+ (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
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Monthly mean Sunspot Number
February 202678.2 -34.3
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Last 30 days85.2 +9.8

This day in history*

Solar flares
12022X1.38
22024M9.4
32024M9.3
42023M5.41
52000M4.97
DstG
11990-187G4
21957-107G2
31979-104G1
41989-103G3
51988-88G2
*since 1994

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