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| During the last week, solar activity was moderate on 6 Jun, and low on the other days. Eleven sunspot active regions (AR4455-AR4459, AR4461-AR4466) were on the visible disk with one M1.0 flare produced. No solar proton event occurred. The F10.7 index ranged from 124 sfu to 141 sfu. Due to the effect of CMEs from 3 Jun, the solar wind speed reached a peak value of about 730km/s, and the geomagnetic field was at moderate storm level for 3 hours, minor storm levels for 9 hours and active levels for 9 hours on 5-6 Jun. Due to the effect of a recurrent coronal hole high speed stream, the solar wind speed reached a peak value of about 510km/s, and the geomagnetic field was at minor storm level for 3 hours and active level for 3 hours on 11 Jun. 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 on 7 Jun. | |
| Within the next week, solar activity is expected to be low to moderate with a chance for M-class flares. The geomagnetic field is expected to mainly quiet to unsettld and reach isolated storm and active levels on 12-14 Jun due to the effect of the recurrent coronal hole high speed stream and CME. | | Published: 2026-06-12 06:30 UTC Forecaster: 025/039 |
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| During the last week, solar activity was low. Nine sunspot active regions (AR4462-AR4466, AR4468-AR4471) were on the visible disk without M-Class flare produced. No solar proton event occurred. The F10.7 index ranged from 111 sfu to 128 sfu. Due to the effect of a recurrent coronal hole high speed stream, the solar wind speed reached a peak value of about 570km/s, and the geomagnetic field was at active level for 6 hours on 12 Jun. Due to the effect of CME from 11 Jun, the solar wind speed reached a peak value of about 630km/s, and the geomagnetic field was at active levels for 3 hours on 13 Jun. It was 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. The geomagnetic field is expected to mainly quiet to unsettld and reach isolated active levels on 24-25 Jun due to the effect of the recurrent coronal hole high speed stream. | | Published: 2026-06-19 06:30 UTC Forecaster: 040/012 |
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| During the last week, solar activity was high on 21 June, moderate on 20 June, low for the rest of time. Eleven sunspot active regions (AR4465, AR4470-AR4479) were on the visible disk with four M-Class flare produced. No solar proton event occurred. The F10.7 index increased from 111 sfu to 156 sfu. Due to the effect of recurrent coronal hole high speed streams, the solar wind speed reached a peak of about 720 km/s, and the geomagnetic field was at minor storm level for 3 hours, active levels for 21 hours during 24-25 Jun. It was quiet to unsettled for the rest of the time. | |
| Within the next week, solar activity is expected to be mainly moderate with a chance for M-class or above flares. The geomagnetic field is expected to mainly quiet to unsettld and reach isolated active levels on 26 Jun due to the continuous effect of the recurrent coronal hole high speed streams. | | Published: 2026-06-26 06:30 UTC Forecaster: 042/012 |
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| During the last week, solar activity was high on 30 Jun and 1 Jul, moderate on 29 Jun and 2 Jul, low for the rest of time. Six sunspot active regions (AR4475-AR4480) were on the visible disk with one X1.1 flare and seventeen M-Class flares produced. No solar proton event occurred. The F10.7 index increased from 163 sfu to 203 sfu. Due to the effect of CME from 26 Jun, the solar wind speed reached a peak of about 430 km/s. Due and the geomagnetic field was at minor storm level for 6 hours, active levels for 6 hours during 30 Jun-1 Jul. It was quiet to unsettled for the rest of the 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 moderate with a chance for M-class or above flares. The geomagnetic field is expected to reach storm levels on 3-4 Jul due to the effects of the CME from 30 Jun, and reach active to minor storm levels on 8-9 Jul due to the recurrent coronal hole high speed streams. It will be quiet to unsettled for the rest of the time. | | Published: 2026-07-03 06:30 UTC Forecaster: 039/027 |
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| During the last week, solar activity was high on 3-5 Jul, moderate on 7-9 Jul, and low on 6 Jul. Ten sunspot active regions (AR4478-AR4487) were on the visible disk with one X1.3 flare and 33 M-Class flares produced. No solar proton event occurred. The F10.7 index decreased from 187 sfu to 110 sfu. Due to the effects of the three CMEs produced on 30 Jun and 1 Jul, the solar wind speed reached a peak value of about 650 km/s and IMF Bz decreased to about -20 nT between 3 Jul and 5 Jul, during which the geomagnetic field was at major storm levels for 3 hours, moderate storm levels for 12 hours, minor storm level for 9 hours and active levels for 12 hours. The geomagnetic field was quiet to unsettled for the rest of the time. The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels on 7 Jul. | |
| 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 active levels for isolated time periods on 10 and 11 Jul due to the persistent effects of the recurrent coronal hole high speed stream. Minor geomagnetic storm level is expected on 12-13 Jul as the arrvial of the CME produced on 9 Jul. It will be quiet to unsettled for the rest of the time. | | Published: 2026-07-10 06:30 UTC Forecaster: 039/022 |
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