Viewing archive of Thursday, 21 July 2011 - Sunspot regions
| Sunspot number | New regions | Background flux | Maximum flux |
|---|---|---|---|
| 56 -23 | 0 | B2.57 | B5.18 |
Sunspot regions
Region 11250 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 30 -70 | HSX | S26W90 | |
Region 11251 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 70 -20 | HSX | N17W49 | |
Region 11254 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 14 2 | 110 30 | CSO | S22W17 | |
Solar flares on this day | ||||
| B4.04 | ||||
Region 11258 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -3 | 20 -20 | HRX | N12W65 | |
Region 11259 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 12 9 | 80 -20 | CSO | N25E42 | |
All times in UTC
Current data suggests there is a high possibility for aurora to appear at the following high latitude regions in the near future
ReykjavikCurrent data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future
TórshavnOulu, Rovaniemi, Sodankylä, Utsjoki
Kirkenes, Tromsø, Trondheim
Murmansk, Vorkuta
Kiruna, Luleå
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
KuopioBergen
Arkhangelsk
Sundsvall, Umeå
Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future
TamperePetrozavodsk
Latest news
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23:12 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 77GW at 00:01 UTC
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19:00 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 18:55 UTC
17:45 UTC - Geomagnetic activity
Active geomagnetic conditions (Kp4) Threshold Reached: 17:30 UTC
16:18 UTC - Solar flare
Moderate M1.22 flare
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/21 | M1.2 |
| Last geomagnetic storm | 2025/03/14 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 138.4 -16.2 |
| Last 30 days | 143 -6.3 |