| |
 |
| During the last week, solar activity was moderate on 11 and 14 Jan, low for the rest of the time. 12 sunspot active regions (AR4333-AR4334, AR4336-AR4337, AR4339-AR4346) were on the visible disk with 2 M-class flares produced. The F10.7 index ranged between 111 sfu and 139 sfu. No solar proton event occurred. Due to the effects of a CME from 8 Jan and recurrent coronal hole high speed stream, the solar wind speed reached a peak of about 620 km/s and the geomagnetic field was at moderate storm levels for 6 hours, minor storm active levels for 12 hours and active levels for 24 hours on 9-13 Jan. The geomagnetic field was at quiet to unsettled levels for the rest of time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 13-15 Jan. | |
| Within the next week, solar activity is expected to be low to moderate with chances for M-class flares. The geomagnetic field is expected to reach isolated active to storm levels on 17-20 Jan due to the effect of the recurrent coronal hole high speed stream. It will be mainly quiet to unsettled for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit will remain at minor storm level on 16, 20-22 Jan. | | Published: 2026-01-16 06:30 UTC Forecaster: 039/026 |
|
| During the last week, solar activity was low to high with high levels on 18 Jan, moderate levels on 17 Jan and 19-21 Jan, low for the rest of time. Sixteen active sunspot regions (AR4336, AR4340-AR4354) were on the visible disk with one X-class flare and 5 M-class flares produced. The greater than 10 MeV proton flux at geosynchronous orbit reached the level of solar proton event at 10:55 on 18 Jan. It reached moderate solar proton event level at 04:40 on 19 Jan and increased to major solar proton event level at 10:40 on 19 Jan, with the maximum proton flux reaching 36976 pfu. This event ended at 05:45 on 22 Jan. The F10.7 index ranged between 148 sfu and 194 sfu. Due to the effect of a recurrent coronal hole high speed stream, the solar wind speed reached a peak of about 750 km/s and the geomagnetic field was at minor storm levels for 15 hours and at active levels for 30 hours on 16-18 Jan. Due to the effects of the CME on 18 Jan, the solar wind speed reached a peak value of 1100 km/s, and the geomagnetic field reached severe storm levels for 3 hours, major storm levels for 30 hours, moderate storm levels for 9 hours, and active levels for 6 hours on 19-21. The geomagnetic field reached minor storm for 3 hours and active levels for 3 hours on 22 Jan. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 16, 18-19, and 22 Jan. | |
| Within the next week, solar activity is expected to be low to moderate with chances for M-class flares. The geomagnetic field is expected to reach isolated active to storm levels on 29 Jan due to the effect of the recurrent coronal hole high speed stream. It will be mainly quiet to unsettled for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit will remain at minor storm level on 23-26 Jan. | | Published: 2026-01-23 06:30 UTC Forecaster: 040/015 |
|
| During the last week, solar activity was low. Nineteen active sunspot regions (AR4341-AR4342, AR4345, AR4347-AR4351, AR4353-AR4363) were on the visible disk without any M-Class or above flares produced. No solar proton event occured. The F10.7 index dccreased from 180 sfu to 129 sfu. Due to the effect of a recurrent coronal hole high speed stream, the solar wind speed reached a peak of about 550 km/s and the geomagnetic field was at active levels for 30 hours on 23-24 Jan. Due to the effects of another recurrent coronal hole high speed stream, the solar wind speed reached a peak value of 740 km/s, and the geomagnetic field reached minor storm levels for 3 hours and active levels for 24 hours on 28-29. The geomagnetic field was quiet to unsettled on the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit maintained at minor storm levels on 23-29 Jan. | |
| Within the next week, solar activity is expected to be low to moderate with chances for M-class flares. The geomagnetic field is expected to reach isolated active levels on 30 Jan and 4-5 Feb due to the effect of the recurrent coronal hole high speed stream. It will be mainly quiet to unsettled for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit will remain at minor storm levels. | | Published: 2026-01-30 06:30 UTC Forecaster: 042/012 |
|
| During the last week, solar activity was extremely high on 1 Feb, high on 2-5 Feb and low for the rest of the time. Fifteen active sunspot regions (AR4349, AR4357-AR4360, AR4362-AR4363, AR4365-AR4372) were on the visible disk with 6 X-class and 61 M-Class flares produced. No solar proton event occured. The F10.7 index ranged from 128 sfu to 178 sfu. Due to the continuous effect of the recurrent coronal hole high speed stream, the geomagnetic field reached active levels for 3 hours on 30 Jan. Due to the arrival of the CME which associated with X8.1 flare on 2 Feb, the solar wind speed reached a peak value of 610 km/s, and the geomagnetic field reached minor storm levels for 6 hours and active levels for 9 hours on 4-5 Feb. The geomagnetic field was quiet to unsettled on the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit maintained at minor storm levels during 30 Jan - 4 Feb. | |
| Within the next week, solar activity is expected to be mainly moderate with chances for M-class and above flares. The geomagnetic field is expected to reach isolated active levels on 6-7 Feb due to the effect of the recurrent coronal hole high speed stream. It will be mainly quiet to unsettled for the rest of the time. | | Published: 2026-02-06 06:30 UTC Forecaster: 027/026 |
|
| During the last week, solar activity was low to moderate, moderate on 8-12 Feb and low for the rest of the time. Eleven active sunspot regions (AR4358, AR4362, AR4366-AR4371, AR4373-AR4375) were on the visible disk with 8 M-Class flares produced. No solar proton event occured. The F10.7 index decreased from 169 sfu to 129 sfu. Due to the continuous effect of the CME from 2 Feb, the geomagnetic field reached active levels for 15 hours on 6-7 Feb. The geomagnetic field reached active levels for 9 hours on 10-11 Feb. It was quiet to unsettled for the rest of the time. | |
| Within the next week, solar activity is expected to be mainly low with chances for M-class flares. The geomagnetic field is expected to reach isolated active or minor storm levels on 14-16 Feb due to the effect of the recurrent coronal hole high speed stream. It will be mainly quiet to unsettled for the rest of the time. | | Published: 2026-02-13 06:30 UTC Forecaster: 027/022 |
|
|
