Viewing archive of Tuesday, 18 August 1998 - Sunspot regions

It appears that the image of the visible solar disk for this day in history is missing.
Sunspot number New regionsBackground fluxMaximum fluxCMX
104 141B7.29X7.03112

Sunspot regions

Region 8297

Number of
sunspots
Size Class Magn. Class Spot Location
3 -2 270 -50 DAO N32W67

Solar flares on this day

C1.81

Region 8299

Number of
sunspots
Size Class Magn. Class Spot Location
11 -2 390 -100 DKI N19W56

Solar flares on this day

M2.19

Region 8301

Number of
sunspots
Size Class Magn. Class Spot Location
4 1 100 -60 EAO S21W30

Region 8304

Number of
sunspots
Size Class Magn. Class Spot Location
4 2 110 10 CAO S30E42

Region 8305

Number of
sunspots
Size Class Magn. Class Spot Location
7 1 30 -10 CAO S26W17

Region 8306

Number of
sunspots
Size Class Magn. Class Spot Location
1 50 -10 HSX N27E55

All times in UTC

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Last X-flare2026/02/04X4.3
Last M-flare2026/02/05M1.1
Last geomagnetic storm2026/02/05Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
January 2026112.6 -11.4
February 2026137.7 +25.1
Last 30 days126 +20.7

This day in history*

Solar flares
12010M5.8
22024M3.9
32024M3.4
42010M2.95
52025M2.1
DstG
11986-259G5
21992-114G3
31967-103G2
41994-85G2
51983-81G1
*since 1994

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