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	Daily Forecast
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	GEO relativistic electron flux
	Chinese Assimilation TEC Model

	Cosmic Ray
	Station K Indices
	Ionosphere

	Coronal Hole Index
	Solar Active Regions
	F10.7 Index
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ARCHIVE

DAILY REPORTS

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During the past 24 hours, solar activity was very low without C-class and above flare produced. There were 3 sunspot regions on the visible disk. The solar wind speed maintained at about 320 km/s. The geomagnetic field was at quiet levels.
Within the next three days, solar activity is expected to be very low. Due to the effects of coronal high speed stream and the CME produced on 26 Apr, the geomagnetic field is expected to reach isolated active levels on 30 Apr to 1 May. It will be mianly quiet on 2 May.
	Published:	2021-04-29 23:05 UTC
	Forecaster:	010/039

During the past 24 hours, solar activity was very low without C-class and above flare produced. There were 3 sunspot regions on the visible disk. The solar wind speed maintained at about 320 km/s. The geomagnetic field was at quiet levels.
Within the next three days, solar activity is expected to be very low. Due to the effects of coronal high speed stream and the CME produced on 26 Apr, the geomagnetic field is expected to reach isolated active levels on 1 May. It will be mianly quiet on 2 May and 3 May.
	Published:	2021-04-30 22:38 UTC
	Forecaster:	012/029

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was 1 sunspot region on the visible disk. The solar wind speed increased to about 360 km/s. The geomagnetic field was at quiet levels.
Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to be quiet to unsettled on 2-3 May, and unsettled to active levels on 4 May.
	Published:	2021-05-01 22:48 UTC
	Forecaster:	021/026

During the past 24 hours, solar activity was very low without C-class and above flare produced. There were no sunspot regions on the visible disk. The solar wind speed ranged between 320 to 380 km/s. The geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to be quiet to unsettled on 3 May, and will reach active levels for short periods on 4-5 May.
	Published:	2021-05-02 22:34 UTC
	Forecaster:	027/010

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no sunspot region on the visible disk. The solar wind speed reached a peak of around 490 km/s due to the effect of a coronal hole high speed streams. The geomagnetic field was quiet.
Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to be quiet to unsettled and reach isolated active levels on 4 May due to the continuous effect of the coronal hole high speed streams.
	Published:	2021-05-03 22:39 UTC
	Forecaster:	039/012

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no sunspot region on the visible disk. The solar wind speed decreased to about 420 km/s. The geomagnetic field was quiet.
Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to be quiet to unsettled.
	Published:	2021-05-04 22:35 UTC
	Forecaster:	021/029

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no sunspot region on the visible disk. The solar wind speed decreased to about 350 km/s. The geomagnetic field was quiet.
Within the next three days, solar activity is expected to be very low. The geomagnetic field is expected to be mainly quiet.
	Published:	2021-05-05 22:39 UTC
	Forecaster:	026/027

WEEKLY REPORTS

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During last week, solar activity was very low. There were three sunspot regions on the visible disk (AR2808-AR2810), Without C-class and above flare produced. The F10.7 index fluctuated between 73 sfu to 79 sfu. Due to the effect of a recurrent coronal hole high speed stream, the solar wind speed increased to about 600 km/s and the geomagnetic field reached minor storm levels for 3 hours and active levels for 18 hours on 13-14 Mar. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 15-17 Mar.
Within next week, solar activity is expected to be mainly very low. Due to the effect of a recurrent coronal hole high speed stream, the geomagnetic field is expected to be acitve, and reach isolated minor storm levels on 19-21 Mar. It will be quiet to unsettled during other periods. The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach minor storm levels on 21-24 Mar.
	Published:	2021-03-19 00:56 UTC
	Forecaster:	039/012

During last week, solar activity was very low. There were three sunspot regions on the visible disk (AR2810-AR2812), Without C-class and above flare produced. The F10.7 index fluctuated between 74 sfu to 84 sfu. Due to the effect of a recurrent coronal hole high speed stream, the solar wind speed reached a peak of about 660 km/s and the geomagnetic field reached moderate storm levels for 3 hours, minor storm levels for 9 hours and active levels for 21 hours on 19-23 Mar. Due to the effect of CME on 20 Mar, the solar wind speed reached a peak of about 480 km/s and the geomagnetic field reached minor storm levels for 3 hours and active levels for 6 hours on 24-25 Mar. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 22-24 Mar.
Within next week, solar activity is expected to be mainly very low. Due to the effect of a recurrent coronal hole high speed stream, the geomagnetic field is expected to be acitve, and reach isolated minor storm levels on 27-31 Mar. It will be quiet to unsettled during other periods.
	Published:	2021-03-26 05:28 UTC
	Forecaster:	039

During last week, solar activity was very low. There were two sunspot regions on the visible disk (AR2811-AR2812), Without C-class and above flares produced. The F10.7 index fluctuated between 74 sfu to 80 sfu. Due to the effect of recurrent coronal hole high speed streams, the solar wind speed reached a peak of about 470 km/s and the geomagnetic field reached moderate storm levels for 3 hours on 26 and 27 Mar.
Within next week, solar activity is expected to be mainly very low. Due to the effect of recurrent coronal hole high speed streams, the geomagnetic field is expected to reach isolated active levels on 3-5, 8 Apr. It will be quiet to unsettled during other periods.
	Published:	2021-04-02 03:13 UTC
	Forecaster:	026/027

During last week, solar activity was very low. There was one sunspot region on the visible disk (AR2813), Without C-class and above flares produced. The F10.7 index fluctuated between 70 sfu to 76 sfu. Due to the effect of co-rotating interaction region, the solar wind speed reached a peak of about 520 km/s and the geomagnetic field reached minor storm levels for 3 hours and active levels for 6 hours on 7 Apr.
Within next week, solar activity is expected to be mainly very low. Due to the effect of recurrent coronal hole high speed streams, the geomagnetic field is expected to reach isolated active levels on 10 Apr. It will be quiet to unsettled during other periods.
	Published:	2021-04-09 02:57 UTC
	Forecaster:	027

During last week, solar activity was very low. There was one sunspot region on the visible disk (AR2814), Without C-class and above flares produced. The F10.7 index fluctuated between 70 sfu to 83 sfu. Due to the effect of the partial halo CME on 10 Apr, the solar wind speed reached a peak of about 460 km/s and the geomagnetic field was at minor storm levels for 3 hours and active levels for 3 hours on 14-15 Apr. It was quiet to unsettled for the rest of time.
Within next week, solar activity is expected to be mainly very low. Due to the effect of recurrent coronal hole high speed stream, the geomagnetic field is expected to reach active to isolated minor storm levels on 16-18 Apr. It will be quiet to unsettled for the rest of time.
	Published:	2021-04-16 04:24 UTC
	Forecaster:	010/029

During last week, solar activity was mainly very low to low, and was at moderate level on 19 Apr. There were five sunspot regions on the visible disk (AR2814-AR2818), With one M-class and twelve C-class flares produced. The F10.7 index fluctuated between 75 sfu to 86 sfu. Due to the effect of recurrent coronal hole high speed stream, the solar wind speed reached a peak of about 670 km/s and the geomagnetic field was at minor storm levels for 12 hours and active levels for 30 hours on 16-19 Apr. The greater than 2 MeV electron flux at geosynchronous orbit will maintain at minor storm levels on 18-22 Apr.
Within next week, solar activity is expected to be mainly low. Due to the effect of recurrent coronal hole high speed stream, the geomagnetic field is expected to reach active levels on 24 Apr. Due to the effect of the partial halo CME on 22 Apr, the geomagnetic field is expected to reach minor storm levels on 25 Apr. The greater than 2 MeV electron flux at geosynchronous orbit will maintain at minor storm levels on 23 Apr.
	Published:	2021-04-23 03:20 UTC
	Forecaster:	021/029

During last week, solar activity was very low. There were six sunspot regions on the visible disk (AR2816-AR2821), without C-class and above flares produced. The F10.7 index fluctuated between 77 sfu to 80 sfu. Due to the effect of recurrent coronal hole high speed stream, the solar wind speed reached a peak of about 490 km/s and the geomagnetic field was at minor storm levels for 3 hours on 23 Apr. Due to the effect of CME on 22 Apr, the geomagnetic field was at minor storm levels for 3 hours and active levels for 3 hours on 25-26 Apr. The greater than 2 MeV electron flux at geosynchronous orbit will maintain at minor storm levels on 23-24 Apr.
Within next week, solar activity is expected to be very low. Due to the effects of coronal high speed stream and the CME produced on 26 Apr, the geomagnetic field is expected to reach isolated active levels on 30 Apr to 1 May. Due to the effects of coronal high speed stream , the geomagnetic field is expected to reach isolated active levels on 4-5 May.
	Published:	2021-04-30 03:22 UTC
	Forecaster:	012/029

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.