Viewing archive of Wednesday, 18 February 1998 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux | C |
|---|---|---|---|---|
| 64 -21 | 0 | B1.71 | C6.9 | 3 |
Sunspot regions
Region 8156 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 24 | 480 -40 | EKI | S25W21 | |
Solar flares on this day | ||||
| C1.97 C6.9 B3.2 B5.06 B8.77 | ||||
Region 8157 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 20 | CRO | N22E11 | |
Region 8158 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -2 | 10 -10 | BXO | S21W03 | |
Solar flares on this day | ||||
| B4.9 | ||||
Region 8160 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -1 | 20 | CRO | N22E11 | |
Region 8161 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 10 | AXX | N25E40 | |
All times in UTC
Latest news
Tuesday, 15 April 2025
CME arrival, G3 storm watch
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Latest forum messages
Unexplained proton activity 67AR 14079 117Unspecified geomagnetic activity 2398Filaments and prominences 138Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 48
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/30 | M2.03 |
| Last geomagnetic storm | 2025/05/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 74.8 -65.8 |
| Last 30 days | 110.5 -21.4 |