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During the last week, solar activity was high on 9-10 Feb and 12 Feb, moderate on 11 Feb, 14-15 Feb, low on 13 Feb. Fifteen sunspot regions (AR3571, AR3574, AR3576-AR3577, AR3579-AR3589) were on the visible disk with one X3.3 flare, thirteen M-class flares and several C-class flares produced. The X3.3 flare was produced in AR3575. Due to the effects of the X3.3 flare and the associated CME, the greater than 10 MeV proton flux at geosynchronous orbit reached the threshold of moderate solar proton event levels at 18:15UTC 9 Feb, ended at 14 Feb 23:10UTC with the maximum flux of 186 pfu. The F10.7 index ranged in 178 sfu to 208 sfu. Due to the effect of the arrival of the CME, the solar wind speed reached to a peak value of about 630km/s during 11-12 Feb. The geomagnetic field reached active levels for 6 hours. Due to the effect of the arrival of another CME, the solar wind speed reached to peak value of about 500km/s during 13-14 Feb. The geomagnetic field reached active levels for 3 hours. The geomagnetic field was quiet to unsettled on the rest of time. | | Within the next week, solar activity is expected to be low to moderate with chances for M-class and above flares. The geomagnetic field will be mainly at quiet to unsetteld levels. | Published: 2024-02-16 06:30 UTC Forecaster: 042/012 |
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During the last week, solar activity was high on 16 Feb and 21-22 Feb, low on the rest of the time. Eight sunspot regions (AR3581-AR3584, AR3586-AR3587, AR3589-AR3590) were on the visible disk with four X-class flares, four M-class flares and several C-class flares produced. The X2.5 flare was produced in AR3576. The X1.8, X1.7 and X6.3 flares were produced in AR3590, which was with the best complex magtic type(Beta-Gamma-Delta) and 900 solar area unit. The F10.7 index ranged in 152 sfu to 173 sfu. The solar wind speed maintained at about 300-350km/s. The geomagnetic field was at quiet to unsettled levels. | | Within the next week, solar activity is expected to be moderate to high with chances for M-class and above flares. The geomagnetic field will be mainly at quiet to unsetteld levels with isolated active levels on 25 Feb due to the effect of recurrent coronal hole high speed stream and CME on 21 Feb. | Published: 2024-02-23 06:30 UTC Forecaster: 042/012 | |
During the last week, solar activity was moderate on 23-25 Feb and 28 Feb, low on the rest of the time. Ten sunspot regions (AR3586, AR3590-AR3598) were on the visible disk with eight M-class flares and several C-class flares produced. No solar proton event occurred. The F10.7 index ranged from 164 sfu to 181 sfu. The solar wind speed reached a peak of 450km/s on 27 Feb due to the effect of a coronal hole high speed stream, and the geomagnetic field reached minor storm levels for 3 hours and active levels for 3 hours. The geomagnetic field was at quiet to unsettled on the rest of time. | | Within the next week, solar activity is expected to be low to moderate with chances for M-class and above flares. The geomagnetic field will be mainly at quiet to unsetteld levels. | Published: 2024-03-01 06:30 UTC Forecaster: 012/037 | |
During the last week, solar activity was low. Fifteen active sunspot regions (AR3590-AR3592, AR3594-AR3605) were on the visible disk with more than sixty C-class flares produced. No solar proton event occurred. The F10.7 index decreased from 153 sfu to 137 sfu. Due to the effect of the CME on 28 Feb, the solar wind speed increased from 260km/s to about 380 km/s on 3 Mar. The geomagnetic field reached moderate storm levels for 3 hours, minor storm levels for 6 hours and active levels for 6 hours during 3-4 Mar. The geomagnetic field was quiet to unsettled for the rest of time. | | Within the next week, solar activity is expected to be low to moderate with chances for M-class and above flares. The geomagnetic field will be mainly at quiet to unsetteld levels with isolated active levels on 8-9 Mar due to the effects of the coronal hole high speed stream and the CME on 5 Mar. | Published: 2024-03-08 06:30 UTC Forecaster: 027/040 | |
During the last week, solar activity was high on 10 Mar, moderate on 8 and 14 Mar, low for the rest of time. Twelve sunspot regions (AR3599-AR3600, AR3602-AR3611) were on the visible disk with three M-class flares and several C-class flares produced. No solar proton event occurred. The F10.7 index fluctuated between 127sfu and 135sfu. Due to the effect of the coronal hole high speed stream, the solar wind speed reached a peak of about 510km/s, and the geomagnetic field reached active levels for 6 hours on 8-9 Mar. The geomagnetic field was at quiet to unsettled on the rest of time. | | Within the next week, solar activity is expected to be low to moderate with chances for M-class and above flares. The geomagnetic field will be mainly at quiet to unsetteld levels with isolated active levels on 15 Mar due to the effect of the coronal hole high speed stream. | Published: 2024-03-15 06:30 UTC Forecaster: 041/012 | |
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