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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 was no active region on the visible disk. The solar wind speed increased to about 350 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 mainly quiet on 14-15 Nov. Due to a recurrent coronal hole high speed stream, the geomagnetic field is expected to reach isolated active levels on 16 Nov.
	Published:	2019-11-14 00:22 UTC
	Forecaster:	015/039

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no active region on the visible disk. The solar wind speed decreased to about 350 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 reach active levels on 16 Nov. It will be quiet to unsettled during other periods.
	Published:	2019-11-15 01:06 UTC
	Forecaster:	035/012

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no active region on the visible disk. The solar wind speed increased to about 390 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 coronal hole high speed stream, the geomagnetic field is expected to reach active levels on 16 Nov. It will be quiet to unsettled during other periods.
	Published:	2019-11-15 23:50 UTC
	Forecaster:	012/032

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no active region on the visible disk. The solar wind speed increased slowly to about 420 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.
	Published:	2019-11-17 00:07 UTC
	Forecaster:	032/029

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no active region on the visible disk. The solar wind speed decreased to about 350 km/s. The geomagnetic field was at quiet to unsettled levels.
Within the next three days, solar activity is expected to be very low. Due to a coronal hole high speed stream, the geomagnetic field is expected to reach active levels on 20 and be quiet to unsettled for the rest of the time.
	Published:	2019-11-18 00:24 UTC
	Forecaster:	029/026

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no active region on the visible disk. The solar wind speed maintained 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. Due to a recurrent coronal hole high speed stream, the geomagnetic field is expected to reach active levels on 20 Nov, minor storm levels on 21 Nov and be quiet to unsettled for the rest of the time.
	Published:	2019-11-19 00:32 UTC
	Forecaster:	029/015

During the past 24 hours, solar activity was very low without C-class and above flare produced. There was no active region on the visible disk. The solar wind speed maintained to about 340 km/s. The geomagnetic field was at quiet levels.
Within the next three days, solar activity is expected to be very low. Due to a recurrent coronal hole high speed stream, the geomagnetic field is expected to reach active levels on 20 Nov, 22 Nov, and minor storm levels on 21 Nov.
	Published:	2019-11-20 00:10 UTC
	Forecaster:	015/039

WEEKLY REPORTS

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During last week, solar activity was very low. There was one active region, AR2749, on the visible disk, without C-class and above flare produced. The F10.7 index ranged from 66 sfu to 69 sfu. Due to the effect of a coronal hole high speed stream, the solar wind speed reached a peak of about 700 km/s on 27 Sep. The geomagnetic field reached minor storm levels for 15 hours and active levels for 27 hours, with quiet to unsettled levels for the rest of time. The greater than 2 MeV electron flux at geosynchronous orbit reached moderate storm levels on 29 Sep and minor storm levels on 28 Sep, 30 Sep - 3 Oct.
Within the next week, solar activity is expected to be very low. The geomagnetic field is expected to mainly be quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach storm levels on 4-5 Oct.
	Published:	2019-10-04 06:11 UTC
	Forecaster:	039

During last week, solar activity was very low. There was no active region on the visible disk, without C-class and above flare produced. The F10.7 index ranged from 67 sfu to 68 sfu. The solar wind speed increased to about 500 km/s on 10 Oct. The geomagnetic field was active levels for 9 hours on 9-10 Oct. The geomagentic field was quiet to unsettled during other periods. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 4 Oct.
Within the next week, solar activity is expected to be very low. Due to the effect of a recurrent coronal hole high speed stream, the geomagnetic field is expected to reach active levels on 14-15 Oct. It will be quiet to unsettled during other periods.
	Published:	2019-10-11 02:37 UTC
	Forecaster:	015/029

During last week, solar activity was very low. There was no active region on the visible disk, without C-class and above flare produced. The F10.7 index ranged from 66 sfu to 69 sfu. The solar wind speed increased to about 510 km/s on 11 Oct. The geomagentic field was quiet to unsettled.
Within the next week, solar activity is expected to be very low. Due to the effect of 2 recurrent coronal hole high speed streams, the geomagnetic field is expected to reach active levels on 21 Oct, and minor storm levels on 24 Oct. It will be quiet to unsettled during other periods.
	Published:	2019-10-18 02:30 UTC
	Forecaster:	029/015

During last week, solar activity was very low. There was no active region on the visible disk, without C-class and above flare produced. The F10.7 index ranged from 64 sfu to 66 sfu. The solar wind speed increased to about 620 km/s on 24 Oct. The geomagnetic field was at active levels for 12 hours on 24 Oct, and quiet to unsettled during other periods.
Within the next week, solar activity is expected to be very low. Due to the effect of a recurrent coronal hole high speed stream, the geomagnetic field is expected to reach minor storm on 25 Oct, and active levels on 26-27 Oct. It will be quiet to unsettled during other periods. The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach storm levels.
	Published:	2019-10-25 02:20 UTC
	Forecaster:	012/029

During last week, solar activity was very low. There was no active region on the visible disk, without C-class and above flare produced. The F10.7 index ranged from 69 sfu to 71 sfu. Due to the effect of a coronal hole high speed stream, the solar wind speed reached a peak of about 690 km/s on 25-27 Oct, and the geomagnetic field reached moderate storm levels for 3 hours, minor storm levels for 9 hours, active levels for 21 hours. The geomagnetic field reached active levels for 3 hours on 31 Oct. It was quiet to unsettled during other periods. The greater than 2 MeV electron flux at geosynchronous orbit reached moderate storm levels on 27-29 Oct and minor storm levels on 25, 26 and 30 Oct.
Within the next week, solar activity is expected to be very low. The geomagnetic field is expected to reach active levels on 4-5 Nov. It will be quiet to unsettled during other periods.
	Published:	2019-11-01 00:32 UTC
	Forecaster:	035/032

During last week, solar activity was very low. There were two active regions on the visible disk, AR2750-2751, without C-class and above flare produced. The F10.7 index ranged from 69 sfu to 71 sfu. The geomagnetic field was quiet to unsettled on 6 Nov and quiet for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 3 Nov.
Within the next week, solar activity is expected to be very low. Due to a coronal hole high speed stream, the geomagnetic field is expected to reach active levels on 10-11 Nov and be quiet to unsettled for the rest of the time.
	Published:	2019-11-08 05:18 UTC
	Forecaster:	012/032

During last week, solar activity was very low. There was no active region on the visible disk, without C-class and above flare produced. The F10.7 index ranged from 70 sfu to 71 sfu. Due to the coronal hole high speed stream, the solar wind speed reached about 390 km/s and the geomagnetic field reached unsettled levels for 3 hours on 11 Nov and quiet for the rest of the time.
Within the next week, solar activity is expected to be very low. Due to a coronal hole high speed stream, the geomagnetic field is expected to reach active levels on 16 Nov. Due to another coronal hole high speed stream, the geomagnetic field is expected to reach minor storm levels on 20-21 Nov and be quiet to unsettled for the rest of the time.
	Published:	2019-11-15 02:32 UTC
	Forecaster:	035/012

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.