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ARCHIVE

DAILY REPORTS

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During the past 24 hours, solar activity was low. Four sunspot regions were on the visible disk with two C-class flares produced. The solar wind speed maintained at about 440 km/s. The geomagnetic field was at quiet to unsettled levels.
Within the next three days, solar activity is expected to be low. The geomagnetic field is expected to be mainly quiet to unsettled with isolated active periods on 25 Jun due to the effect of the recurrent coronal hole high speed stream.
	Published:	2022-06-24 23:59 UTC
	Forecaster:	041/012

During the past 24 hours, solar activity was low. Two sunspot regions were on the visible disk with one C-class flares produced. The solar wind speed increased to about 500 km/s. The geomagnetic field was at minor storm levels for 3 hours and active levels for 3 hours. It was quiet to unsettled for the rest of the time.
Within the next three days, solar activity is expected to be low. The geomagnetic field is expected to be mainly quiet to unsettled with isolated active periods on 26 Jun due to the continous effect of the recurrent coronal hole high speed stream.
	Published:	2022-06-25 23:57 UTC
	Forecaster:	012/040

During the past 24 hours, solar activity was low. Two sunspot regions were on the visible disk with three C-class flares produced. Due to the continous effect of the recurrent coronal hole high speed stream, the solar wind speed increased to about 640 km/s. The geomagnetic field was at minor storm levels for 3 hours and 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. The geomagnetic field is expected to be mainly quiet to unsettled with isolated active periods on 27 Jun due to the continous effect of the recurrent coronal hole high speed stream. The greater than 2 MeV electron flux at geosynchronous orbit will reach minor storm levels on 28-29 Jun.
	Published:	2022-06-27 00:11 UTC
	Forecaster:	040/026

During the past 24 hours, solar activity was low. Two sunspot regions were on the visible disk with one C-class flare produced. Due to the continous effect of the recurrent coronal hole high speed stream, the solar wind speed decreased to about 500 km/s. The geomagnetic field was at active levels for 6 hours. It was quiet to unsettled for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm level.
Within the next three days, solar activity is expected to be low. The geomagnetic field is expected to be mainly quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit will maintain at minor storm levels.
	Published:	2022-06-28 00:07 UTC
	Forecaster:	026/039

During the past 24 hours, solar activity was very low. Five sunspot regions were on the visible disk without C-class and above flare produced. The solar wind speed maintained at about 500 km/s. The geomagnetic field was quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm level.
Within the next three days, solar activity is expected to be low. The geomagnetic field is expected to be mainly quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit will maintain at minor storm levels.
	Published:	2022-06-29 00:06 UTC
	Forecaster:	039/027

During the past 24 hours, solar activity was low. Four sunspot regions were on the visible disk with one C-class flare produced. The solar wind speed decreaseed to about 440 km/s. The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm level.
Within the next three days, solar activity is expected to be low. The geomagnetic field is expected to be mainly quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit will maintain at minor storm levels on 30 Jun - 1 Jul.
	Published:	2022-06-30 00:06 UTC
	Forecaster:	027/037

During the past 24 hours, solar activity was very low. Three sunspot regions were on the visible disk without C-class or above flare produced. The solar wind speed decreaseed to about 340 km/s. The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit maintained at minor storm level.
Within the next three days, solar activity is expected to be low. The geomagnetic field is expected to be mainly quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit will maintain at minor storm levels on 1-3 Jul.
	Published:	2022-07-01 00:36 UTC
	Forecaster:	037/029

WEEKLY REPORTS

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During the last week, solar activity was at low levels on 13-14 and 17 May, moderate levels on 15-16 and 18 May, and high levels on 19 May. Thirteen active sunspot regions were on the visible disk (AR3006-3008, AR3010-3019) with 6 M-Class and 58 C-Class flares produced. Region 3014 increased to 1100 sunspot unit areas with Beta-Gamma-Delta type. The F10.7 index ranged between 150 sfu to 180 sfu. Due to the effects of the coronal hole high speed stream, the solar wind speed increased to about 570 km/s on 15 May, the geomagnetic field reached active levels for 6 hours. The geomagnetic field was at quiet to unsettled levels during the other time..
Within next week, solar activity is expected to be mainly moderate with a large chance for M-Class and above level flares. The geomagnetic field is expected to be mainly quiet to unsettled.
	Published:	2022-05-20 01:06 UTC
	Forecaster:	012/041

During the last week, solar activity was at moderate levels on 20 and 25 May, and low levels for the other days. Thirteen active sunspot regions were on the visible disk (AR3007, AR3010, AR3011, AR3014-AR3017, AR3019-AR3024) with 2 M-Class and 42 C-Class flares produced. AR3014 was the most complicate sunspot group with maximum area of 1190 sunspot unit areas, and Beta-Gamma-Delta magnetic field type. It is rotating toward the west limb currently. The F10.7 index decreased from 167 sfu to 123 sfu. Due to the effects of the coronal hole high speed stream, the solar wind speed increased to about 600 km/s on 20 May, the geomagnetic field reached active levels for 3 hours on 20 May. The solar wind speed increased to about 500 km/s on 22 May , the geomagnetic field reached active levels for 3 hours on 22 May. The geomagnetic field was at quiet to unsettled levels during the other time.
Within the next week, solar activity is expected to be mainly at low levels, with possibility of producing M-Class and above flares. The geomagnetic field is expected to reach isolated active levels on 27-28 May due to the effects of the coronal hole high speed stream and CME on 25 May. It will be quiet to unsettled on the rest time.
	Published:	2022-05-27 01:00 UTC
	Forecaster:	021

During the last week, solar activity was very low to low. Nine active sunspot regions (AR3017, AR3019-AR3021, AR3023-AR3027) were on the visible disk with 11 C-class flares produced. The F10.7 index decreased from 114 sfu to 101 sfu. Due to the effects of the coronal hole high speed stream and CME on 25 May, the solar wind speed reached the peak value of about 570 km/s, the geomagnetic field reached minor storm levels for 12 hours and active levels for 6 hours on 27-28 May. The geomagnetic field was at quiet to unsettled levels during the other time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 30 May-2 Jun.
Within the next week, solar activity is expected to be mainly at low levels. Due to the effect of the CME on 2 Jun, it will reach active levels for short periods on 5 Jun and will be at quiet to unsettled levels during the other time. The greater than 2 MeV electron flux at geosynchronous orbit is expected to maintain at minor storm levels on 3-4 Jun.
	Published:	2022-06-03 00:19 UTC
	Forecaster:	012/027

During the last week, solar activity was very low to low. Six active sunspot regions (AR3023-AR3024, AR3026-AR3029) were on the visible disk with 6 C-class flares produced. The F10.7 index fluctuated between 96 sfu and 106 sfu. Due to the effect of CME from 2 Jun, the solar wind speed reached the peak value of about 330 km/s on 6-7 Jun. The geomagnetic field was at quiet to unsettled levels. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 3-6 Jun.
Within the next week, solar activity is expected to be low to moderate. Due to the effect of the coronal hole high speed stream, it will reach active levels for short periods on 16 Jun and will be at quiet to unsettled levels during the other time.
	Published:	2022-06-10 01:28 UTC
	Forecaster:	039/026

During the last week, solar activity was low to moderate. Ten active sunspot regions (AR3029-AR3038) were on the visible disk with 3 M-class flares and 31 C-class flares produced. The F10.7 index increased from 111 sfu to 147 sfu. Due to the effect of the recurrent coronal hole high speed stream, the solar wind speed reached the peak value of about 550 km/s on 13 Jun, the geomagnetic field was at minor storm levels for three hours. Due to the effect of CME on 13 Jun, the solar wind speed reached the peak value of about 580 km/s on 15 Jun, the geomagnetic field was at minor storm levels for three hours and active levels for 9 hours. Due to the effect of the recurrent coronal hole high speed stream, the solar wind speed reached the peak value of about 620 km/s on 16 Jun, the geomagnetic field was at active levels for three hours. 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. Due to the effect of the coronal hole high speed stream, it will reach active levels for short periods on 17 Jun and 22-23 Jun. it will be at quiet to unsettled levels during the other time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 18-19 Jun.
	Published:	2022-06-17 00:50 UTC
	Forecaster:	040/012

During the last week, solar activity was low. Ten active sunspot regions (AR3030-AR3035, AR3037-AR3040) were on the visible disk with 56 C-class flares produced. The F10.7 index decreased from 149 sfu to 121 sfu. Due to the effect of the recurrent coronal hole high speed stream, the solar wind speed reached the peak value of about 650 km/s on 17-19 Jun, the geomagnetic field reached active levels for nine hours. 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 19-20 Jun.
Within the next week, solar activity is expected to be low to moderate. Due to the effect of the coronal hole high speed stream, the geomagnetic field will reach active levels for short periods on 25 Jun. It will be at quiet to unsettled levels during the other time.
	Published:	2022-06-24 00:48 UTC
	Forecaster:	041

During the last week, solar activity was mainly at low levels, and was at very low levels on 28 Jun and 30 Jun. Nine active sunspot regions (AR3034-AR3035, AR3038, AR3040-AR3045) were on the visible disk with 10 C-class flares produced, and no M or above class flares produced. The F10.7 index decreased from 115 sfu to about 92 sfu. Due to the effect of the coronal hole high speed stream, the solar wind speed reached the peak value of about 640 km/s on 26 Jun, and then gradully decreased to about 340km/s. The geomagnetic field reached minor storm levels for six hours and active levels for twenty-one hours. 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 27-30 Jun.
Within the next week, solar activity is expected to be mainly low. Due to the effect of the coronal hole high speed stream, the geomagnetic field will reach active levels for short periods on 6-7 Jul. It will be at quiet to unsettled levels during the other time.
	Published:	2022-07-01 03:10 UTC
	Forecaster:	037/029

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.