Viewing archive of Sunday, 16 May 1999 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxCM
151 -160 -2B5.86M1.833

Sunspot regions

Region 8534

Number of
sunspots
Size Class Magn. Class Spot Location
6 -4 90 DAO S17W60

Solar flares on this day

M1.8 C1.44 M1.6 C8.14

Region 8535

Number of
sunspots
Size Class Magn. Class Spot Location
7 -2 370 40 CKO N22W49

Region 8540

Number of
sunspots
Size Class Magn. Class Spot Location
2 -3 0 -10 BXO S25W33

Region 8541

Number of
sunspots
Size Class Magn. Class Spot Location
27 12 100 20 ESO N21W26

Solar flares on this day

M1.46

Region 8542

Number of
sunspots
Size Class Magn. Class Spot Location
1 40 -30 HSX S19E18

Region 8543

Number of
sunspots
Size Class Magn. Class Spot Location
2 0 AXX N06E16

Region 8544

Number of
sunspots
Size Class Magn. Class Spot Location
12 9 90 80 DAO S21E48

Region 8545

Number of
sunspots
Size Class Magn. Class Spot Location
1 230 150 HKX N36E62

Region 8546

Number of
sunspots
Size Class Magn. Class Spot Location
2 0 BXO S33W45

Region 8547

Number of
sunspots
Size Class Magn. Class Spot Location
7 20 BXO N22W15

All times in UTC

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Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Norilsk, Vorkuta
The maximum X-ray flux of the past two hours is:
M1.61

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Latest alerts

17:27 UTC - Solar flare

Moderate M1.5 flare

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17:03 UTC - Solar flare

Moderate M1.61 flare

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16:45 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.61)


02:09 UTC - Solar flare

Moderate M1.54 flare from sunspot region 4048

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Minor R1 radio blackout in progress (≥M1 - current: M1.24)


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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/03/30M1.4
Last geomagnetic storm2025/03/27Kp5 (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025127.5 -27.1
Last 30 days127.5 -24.7

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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