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ARCHIVE

DAILY REPORTS

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During the past 24 hours, solar activity was moderate. Seven sunspot active regions were on the visble disk, produced an M1.4 flare. The solar wind speed slowly decreased to 380 km/s. The geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be low. The geomagnetic field is expected to reach acitve levels on 15 Feb as the arrival of a recurrent coronal high speed stream, and quiet to unsettled levles on 13 and 14 Feb.
	Published:	2026-02-12 23:58 UTC
	Forecaster:	022/027

During the past 24 hours, solar activity was moderate. Four sunspot active regions were on the visble disk with an M1.0 flare produced. The solar wind speed maintained at about 410 km/s. The geomagnetic field reached active levels for 6 hours and was quiet to unsettled for the rest of the time.
Within the next three days, solar activity is expected to be mainly low. The geomagnetic field is expected to reach acitve or minor storm levels due to the effects of the recurrent coronal high speed stream.
	Published:	2026-02-14 00:05 UTC
	Forecaster:	027/026

During the past 24 hours, solar activity was low. 5 active sunspot regions were on the visble disk without M-class and above flares produced. Due to the effect of the recurrent coronal high speed stream, the solar wind speed increased to about 520 km/s, and the geomagnetic field reached active levels for 3 hours with quiet to unsettled levels for the rest of the time.
Within the next three days, solar activity is expected to be mainly low. Due to the continuous effect of the recurrent coronal high speed stream, the geomagnetic field is expected to reach acitve or minor storm levels.
	Published:	2026-02-14 23:50 UTC
	Forecaster:	026/016

During the past 24 hours, solar activity was low. Five sunspot active regions were on the visble disk without M-class and above flares produced. Due to the effect of the recurrent coronal high speed stream, the solar wind speed increased to about 700 km/s, and the geomagnetic field reached minor storm levels for 6 hours, active levels for 3 hours and it was quiet to unsettled for the rest of the time.
Within the next three days, solar activity is expected to be mainly low. Due to the continuous effect of the recurrent coronal high speed stream, the geomagnetic field is expected to reach isolated acitve levels.
	Published:	2026-02-15 23:51 UTC
	Forecaster:	016/042

During the past 24 hours, solar activity was moderate. Five sunspot active regions were on the visble disk with one M2.4 flare produced. Due to the continuous effect of the recurrent coronal hole high speed stream, the solar wind speed increased to about 680 km/s, and the geomagnetic field reached moderate storm level for 3 hours, active levels for 12 hours. It was quiet to unsettled for the rest of the time.
Within the next three days, solar activity is expected to be low to moderate. Due to the effects of the recurrent coronal hole high speed stream and the CME on 16 Feb, the geomagnetic field is expected to reach isolated storm levels on 17-19 Feb.
	Published:	2026-02-16 23:43 UTC
	Forecaster:	042/016

During the past 24 hours, solar activity was low. 4 active sunspot regions were on the visble disk without M-class and above flares produced. Due to the continuous effect of the recurrent coronal hole high speed stream, the solar wind speed decreased to about 540 km/s, and the geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be low to moderate with chances for M-class flares. Due to the effects of the recurrent coronal hole high speed stream and the CME from 16 Feb, the geomagnetic field is expected to reach isolated storm levels on 18-19 Feb and mainly quiet to unsettled on 20 Feb. The greater than 2 MeV electron flux at geosynchronous orbit will reach minor storm level on 18 Feb.
	Published:	2026-02-17 23:39 UTC
	Forecaster:	026/025

During the past 24 hours, solar activity was low. There were 3 active sunspot regions on the visble disk without M-class and above flares produced. The solar wind speed decreased to about 450 km/s, the geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be low to moderate with chances for M-class flares. Due to the effects of the recurrent coronal hole high speed stream and the CME from 16 Feb, the geomagnetic field is expected to reach isolated active levels on 19 Feb and mainly quiet to unsettled for the rest of time. The greater than 2 MeV electron flux at geosynchronous orbit will reach minor storm level on 18-21 Feb.
	Published:	2026-02-19 00:00 UTC
	Forecaster:	025

WEEKLY REPORTS

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During the last week, solar activity was high on 27, 31 Dec, moderate on 28-29 Dec and low for the rest of the time. Seventeen sunspot active regions (AR4312, AR4316-AR4317, AR4319-AR4332) were on the visible disk with six M-class flares produced. The F10.7 index fluctuated between 166 sfu and 195 sfu. No solar proton event occurred. Due to the effect of a recurrent coronal hole high speed stream, the solar wind speed reached the peak of about 540 km/s on 31 Dec. The geomagnetic field was at quiet to unsettled levels. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 26-30 Dec.
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 due to effects of a recurrent coronal hole high speed stream and CMEs from 31 Dec and 1 Jan, and be mainly quiet to unsettled for the rest of the time.
	Published:	2026-01-02 02:26 UTC
	Forecaster:	039/041

During the last week, solar activity was low. Eleven sunspot active regions (AR4323-AR4325, AR4328, AR4332-AR4338) were on the visible disk without M-class flares produced. The F10.7 index decreased from 166 sfu to 135 sfu. No solar proton event occurred. Due to the effect of a recurrent coronal hole high speed stream, the solar wind speed reached a peak of about 600 km/s and the geomagnetic field was at minor storm levels for six hours and at active levels for three hours on 2 Jan. Due to the effect of a CME on 1 Jan, the solar wind speed reached a peak of about 500 km/s and the geomagnetic field was at active levels for six hours on 5 Jan. The solar wind speed increased to about 420 km/s and the geomagnetic field was at active levels for six hours on 8 Jan. The geomagnetic field was at quiet to unsettled levels for the rest of time.
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 9-10 and 13-14 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.
	Published:	2026-01-09 02:41 UTC
	Forecaster:	010/042

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 00:52 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 00:17 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 01:05 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 03:09 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 01:38 UTC
	Forecaster:	027/022

SOLAR IMAGES

The active region magnetogram is created from the raw full-disk longitudinal magnetogram data, which is observed at Huairou Solar Observatory Station of Beijing in China.