Viewing archive of Friday, 17 August 2001 - 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 |
|---|---|---|---|---|
| 158 -13 | 2 -1 | B6.14 | C2.33 | 5 |
Sunspot regions
Region 9570 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 120 -20 | HSX | S11W73 | |
Region 9571 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 -10 | AXX | N06W56 | |
Region 9573 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -4 | 30 -10 | HSX | S09W35 | |
Region 9574 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -10 | 150 -40 | EAO | S04W79 | |
Region 9575 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 3 | 130 | CAO | N12E08 | |
Region 9577 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -4 | 100 50 | DSO | N13W74 | |
Region 9578 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -3 | 60 40 | AXX | S10W65 | |
Region 9579 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -4 | 40 -10 | CSO | S20W36 | |
Region 9580 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 80 -60 | HSX | N25E48 | |
Region 9581 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 2 | 50 30 | CSO | S26W23 | |
Solar flares on this day | ||||
| C2.33 | ||||
Region 9582 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -1 | 30 -10 | AXX | N32E59 | |
Region 9583 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 20 | DSO | S23E13 | |
Region 9584 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 20 | BXO | S11E60 | |
Region 9585 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 30 | BXO | N15E74 | |
Solar flares on this day | ||||
| C1.07 | ||||
All times in UTC
Latest news
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Wednesday, 31 December 2025
Happy New Year! Celebrate with an M7.1 solar flare!
Latest forum messages
Broad-spectrum aurora pillars 34CH 17 9Incoming & Unnumbered Active Regions 135AR 4357 1Filaments and prominences 480
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2026/01/18 | X1.9 |
| Last M-flare | 2026/01/21 | M3.4 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| January 2026 | 119.2 -4.8 |
| Last 30 days | 119.5 +1.5 |