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ARCHIVE

DAILY REPORTS

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During the past 24 hours, solar activity was moderate. Eight sunspot regions were on the visible disk with one M-Class flares and several C-class flares produced. Due the effect of a coronal hole high speed stream, the solar wind speed increased to about 550 km/s. The geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be mainly low with a chance for M-Class flares. The geomagnetic field is expected to be quiet to unsettled.
	Published:	2023-01-27 00:05 UTC
	Forecaster:	039/042

During the past 24 hours, solar activity was low. Seven sunspot regions were on the visible disk with three C-class flares produced. Due the effect of a coronal hole high speed stream, the solar wind speed maintained at about 540 km/s. The geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be mainly low with a chance for M-class flares. The geomagnetic field is expected to be quiet to unsettled.
	Published:	2023-01-27 23:52 UTC
	Forecaster:	042/012

During the past 24 hours, solar activity was low. Seven sunspot regions were on the visible disk with four C-class flares produced. The solar wind speed maintained at about 540 km/s. The geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be mainly low. The geomagnetic field is expected to be quiet to unsettled.
	Published:	2023-01-28 23:56 UTC
	Forecaster:	012/026

During the past 24 hours, solar activity was low. Six sunspot regions were on the visible disk with two C-class flares produced. The solar wind speed decreased to about 470 km/s. The geomagnetic field was quiet.
Within the next three days, solar activity is expected to be mainly low. The geomagnetic field is expected to be quiet to unsettled.
	Published:	2023-01-29 23:58 UTC
	Forecaster:	026/010

During the past 24 hours, solar activity was low. Five sunspot regions were on the visible disk with several C-class flares produced. Due to the effect of the recurrent coronal hole high speed stream, the solar wind speed reached a peak of about 500 km/s. The geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be mainly low. The geomagnetic field is expected to be mainly quiet to unsettled.
	Published:	2023-01-30 23:54 UTC
	Forecaster:	010/042

During the past 24 hours, solar activity was low. Five sunspot regions were on the visible disk with several C-class flares produced. Due to the effect of the recurrent coronal hole high speed stream, the solar wind speed maintained at about 490 km/s. The geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be mainly low. The geomagnetic field is expected to be mainly quiet to unsettled.
	Published:	2023-01-31 23:54 UTC
	Forecaster:	042/012

During the past 24 hours, solar activity was low. Six sunspot regions were on the visible disk with several C-class flares produced. The solar wind speed increased to about 440 km/s. The geomagnetic field was quiet to unsettled.
Within the next three days, solar activity is expected to be mainly low. The geomagnetic field is expected to be mainly quiet to unsettled.
	Published:	2023-02-01 23:54 UTC
	Forecaster:	012/041

WEEKLY REPORTS

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During the last week, solar activity was high on 14-15 Dec and low on 9-13 Dec. Thirteen active sunspot regions (3153, 3156-3158, 3160-3168) were on the visible disk with 20 M-class flares and 64 C-Class flares produced. No solar proton events occurred. The F10.7 index ranged between 142 sfu and 166 sfu. Due to the effect of the recurrent coronal hole high speed streams, the geomagnetic field reached active levels for 3 hours on 9 Dec and was at quiet to unsettled levels for the rest of the time.
Within the next week, solar activity is expected to be mainly moderate with M-Class flares produced. Due to the effect of a recurrent coronal hole high speed stream, the geomagnetic field is expected to reach isolated active levels on 18-19 Dec, mainly quiet levels for the rest of the time.
	Published:	2022-12-16 00:42 UTC
	Forecaster:	026/042

During the last week, solar activity was high on 16 Dec, moderate on 17 and 20 Dec, and low for the rest of time. Thirteen active sunspot regions (AR3160, AR3162-AR3163, AR3165-AR3174) were on the visible disk with 12 M-class flares and 66 C-Class flares produced. No solar proton events occurred. The F10.7 index ranged decreased from 163 sfu to 131 sfu. Due to the effect of the recurrent coronal hole high speed streams, the maximum southward component of interplanetary magnetic field reached -13 nT, the geomagnetic field reached active levels for 3 hours on 19 Dec. Due to the effect of another recurrent coronal hole high speed streams, the geomagnetic field reached active levels for6 hours on 22 Dec. The geomagnetic field was mainly quiet to unsettled for the rest of the time.
Within the next week, solar activity is expected to be mainly low with a chance for M-Class flares produced. Due to the effect of many recurrent coronal hole high speed streams, the geomagnetic field is expected to reach isolated active levels on 23-25 Dec, isolated active or storm levels on 26-29 Dec.
	Published:	2022-12-23 01:30 UTC
	Forecaster:	042/012

During the last week, solar activity was moderate on 27 Dec and 29 Dec, and low for the rest of time. Ten active sunspot regions (AR3168-AR3177) were on the visible disk with 6 M-class flares and 64 C-Class flares produced. No solar proton events occurred. The F10.7 index increased from 128 sfu to 163 sfu. Due to the effect of the recurrent coronal hole high speed streams, the solar wind speed peaked at about 570 km/s, the geomagnetic field reached minor storm levels for 6 hours and active levels for 24 hours on 23-24 Dec. Due to the effect of CME and recurrent coronal hole high speed streams, the solar wind speed increased to about 600 km/s, the geomagnetic field reached minor storm levels for 9 hours and active levels for 18 hours on 26-27 Dec. Due to the effect of coronal hole high speed streams, the solar wind speed increased to about 500 km/s, the geomagnetic field reached active levels for 3 hours on 29 Dec.The geomagnetic field was mainly quiet to unsettled for the rest of the time.
Within the next week, solar activity is expected to be low to moderate with a chance for M-Class flares produced. Due to the effect of several recurrent coronal hole high speed streams, the geomagnetic field is expected to reach isolated active or minor storm levels on 30-31 Dec, isolated active to storm levels on 4-5 Jan.
	Published:	2022-12-30 00:26 UTC
	Forecaster:	029/037

During the last week, solar activity was moderate on 30 Dec, and low for the rest of time. Twelve active sunspot regions (AR3169, AR3171-AR3173, AR3176-AR3183) were on the visible disk with 2 M-class flares and 57 C-Class flares produced. No solar proton events occurred. The F10.7 index decreased from 165 sfu to 154 sfu. Due to the effect of the recurrent coronal hole high speed streams, the solar wind speed peaked at about 650 km/s, the geomagnetic field reached minor storm levels for 6 hours and active levels for 18 hours on 30 Dec to 1 Jan. Due to the effect of CME on 30 Dec, the solar wind speed increased to about 450 km/s, the geomagnetic field reached minor storm levels for 6 hours and active levels for 6 hours on 4 Jan. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 1-3 Jan.
Within the next three days, solar activity is expected to be low to moderate with a chance for M-Class and above flares. The geomagnetic field is expected to be mainly quiet to unsettled with isolated active levels on 6 Jan.
	Published:	2023-01-06 01:19 UTC
	Forecaster:	027/012

During the last week, solar activity was high on 6, 9-12 Jan, and moderate for the rest of time. Eleven active sunspot regions (AR3176-AR3177, AR3180-AR3188) were on the visible disk with 3 X-Class flares, 23 M-Class flares and 79 C-Class flares produced. Among them, the X1.2 flare on January 6 was produced by AR3182, the X1.9 flare on January 9 was produced by AR3184, and the X1.0 flare on January 10 was produced by AR3186. No solar proton events occurred. The F10.7 index increased from 172 sfu to 212 sfu. The geomagnetic field was mainly quiet to unsettled.
Within the next three days, solar activity is expected to be mainly moderate to high with M-Class flares produced and a chance for X-Class flares produced. The geomagnetic field is expected to be mainly quiet to unsettled.
	Published:	2023-01-13 00:47 UTC
	Forecaster:	041/040

During the last week, solar activity was high on 15 Jan and moderate on 13-14,17-19 Jan. Sixteen active sunspot regions (AR3181-3182, AR3184-3186, AR3188-3198) were on the visible disk with 12 M-Class flares and more than thirty C-Class flares produced. No solar proton events occurred. The F10.7 index ranged between 209 sfu and 234 sfu. The geomagnetic field reached active levels for 9 hours on 13-14 Jan. The geomagnetic field reached minor storm levels for 6 hours and active levels for 18 hours on 15-16 Jan. Due to the effects of CME and recurrent coronal hole high speed streams, the geomagnetic field reached active levels for 9 hours on 17-18 Jan and was at quiet to unsettled levels for the rest of the time.
Within the next week, solar activity is expected to be mainly moderate and produce M-class flares with a chance for X-Class flares produced. Due to the effect of recurrent coronal hole high speed streams, the geomagnetic field is expected to reach isolated active levels on 20 Jan, mainly quiet to unsettled levels for the rest of the time.
	Published:	2023-01-20 01:00 UTC
	Forecaster:	037/026

During the last week, solar activity was moderate on 22, 25-26 Jan and low for the rest of time. Fifteen active sunspot regions (AR3184, AR3186, AR3190-3192, AR3194-3203) were on the visible disk with 6 M-Class flares and more than fifty C-Class flares produced. No solar proton events occurred. The F10.7 index decreased from 218 sfu to 151 sfu. Due to the effects of CME and coronal hole high speed stream, the solar wind speed reached a peak of about 550 km/s on 21-23 Jan, the geomagnetic field reached active levels for 6 hours on 21 Jan. Due to the effects of another coronal hole high speed stream, the solar wind speed reached a peak of about 550 km/s on 25-26 Jan. The geomagnetic field was at quiet to unsettled levels for the rest of the time.
Within the next week, solar activity is expected to be mainly low with a chance for M-Class flares. Due to the effect of a recurrent coronal hole high speed stream, the geomagnetic field is expected to reach isolated active to minor storm levels on 30-31 Jan, and quiet to unsettled levels for the rest of the time.
	Published:	2023-01-27 01:03 UTC
	Forecaster:	039/042

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.