Viewing archive of Wednesday, 18 April 2001 - Sunspot regions
| Sunspot number | New regions | Background flux | Maximum flux | C |
|---|---|---|---|---|
| 63 -26 | 2 1 | B8.14 | C3.21 | 4 |
Sunspot regions
Region 9420 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 0 -20 | AXX | S07W83 | |
Region 9422 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 -1 | 10 | BXO | S13W54 | |
Region 9424 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -2 | 20 | BXO | S15W85 | |
Region 9426 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -1 | 10 -10 | BXO | S08W40 | |
Region 9429 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 80 -10 | HAX | N08E23 | |
Region 9430 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 1 | 30 | CRO | S17W46 | |
Region 9431 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 10 | AXX | S10E49 | |
All times in UTC
Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future
NuukReykjavik
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
TórshavnOulu, Rovaniemi, Kuopio, Sodankylä, Utsjoki
Kirkenes, Tromsø, Trondheim
Arkhangelsk, Murmansk
Kiruna, Luleå, Sundsvall, Umeå
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Coronal hole faces Earth
X2.0 solar flare from sunspot region 4001
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23:45 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 23:37 UTC
Strong G3 geomagnetic storm watch for 23 March
Yesterday around 16 UTC an M1.2 solar flare took place around sunspot region 4028. The solar flare triggered a filament eruption which erupted from the center of the earth-facing solar disk.
12:18 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 75GW at 13:10 UTC
03:45 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 03:35 UTC
03:15 UTC - Geomagnetic activity
Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 02:59 UTC
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/21 | M1.2 |
| Last geomagnetic storm | 2025/03/21 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 140.3 -14.3 |
| Last 30 days | 140 -11.7 |