Date: 23 September 2021; 10:45 UT

Summary of Space Weather.
Sunspot AR2871 has a ‘delta-class’ magnetic field that harbours energy for M-class solar flares. The
geomagnetic conditions are unsetteled.The solar wind speed has slightly increased.

Space Weather parameters / observations;

Sunspot Number: 76
10.7cm Flux: 89 sfu

Solar wind speed: 379.0 km.s-1
Solar wind density: 11.0 protons.cm3

Kp: 4
Bz: -1.1 nT (South)
Bt: 5.7 nT
Dst: -13 nT

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Date: 22 September 2021; 10:50 UT

Summary of Space Weather.
Sunspot AR2871 is cracking with for C-class solar flares. The
geomagnetic conditions are unsetteled.The solar wind speed has increased.

Space Weather parameters / observations;

Sunspot Number: 50
10.7cm Flux: 80 sfu

Solar wind speed: 382.6 km.s-1
Solar wind density: 5.1 protons.cm3

Kp: 4
Bz: -3.3 nT (South)
Bt: 5.2 nT
Dst: -35 nT

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Date: 21 September 2021; 09:45 UT

Summary of Space Weather.
The new sunspot AR2871 is cracking with C-class solar flares. The geomagnetic conditions are
quiet. The solar wind speed has slightly increased.

Space Weather parameters / observations;

Sunspot Number: 51
10.7cm Flux: 80 sfu

Solar wind speed: 315.4 km.s-1
Solar wind density: 20.6 protons.cm3

Kp: 1
Bz: 0.5 nT (North)
Bt: 4.4 nT
Dst: 4 nT

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Date: 20 September 2021; 18:15 UT

Summary of Space Weather.
A new sunspot is seeing to be emerging on the solar disc. The geomagnetic conditions are
quiet. The solar wind speed has declining.

Space Weather parameters / observations;
Sunspot Number: 13
10.7cm Flux: 75 sfu

Solar wind speed: 306.2 km.s-1
Solar wind density: 10.7 protons.cm3

Kp: 1
Bz: 0.2 nT (North)
Bt: 3.9 nT
Dst: -19 nT

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Date: 19 September 2021; 10:45 UT

Summary of Space Weather.
An old sunspot AR2860 has returned on the solar disc but has been renumbered as AR2871. The geomagnetic conditions are
quiet. The solar wind speed has declined.

Space Weather parameters / observations;

Sunspot Number: 11
10.7cm Flux: 76 sfu

Solar wind speed: 331.2 km.s-1
Solar wind density: 7.5 protons.cm3

Kp: 0
Bz: 4.3 nT (North)
Bt: 5.0 nT
Dst: -23 nT

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Date: 18 September 2021; 10:24 UT

Summary of Space Weather.
The sun is spotless. The geomagnetic conditions are quiet. The solar wind speed is increasing.

Space Weather parameters / observations;

Sunspot Number: 0
10.7cm Flux: 75 sfu

Solar wind speed: 396.1 km.s-1
Solar wind density: 17.4 protons.cm3

Kp: 0
Bz: 0.2 nT (North)
Bt: 6.9 nT
Dst: -36 nT

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Date: 17 September 2021; 23:44 UT

Summary of Space Weather.
The sun is spotless. A geomagnetic storm is in progress. The solar wind speed has increased.

Space Weather parameters / observations;

Sunspot Number: 0
10.7cm Flux: 75 sfu

Solar wind speed: 396.8 km.s-1
Solar wind density: 16.7 protons.cm3

Kp: 1
Bz: 5.4 nT (North)
Bt: 15.1 nT
Dst: -64 nT

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Date: 16 September 2021; 10:20 UT

Summary of Space Weather.
The sun is spotless. The geomagnetic conditions are quiet. The
solar wind speed is declining.

Space Weather parameters / observations;

Sunspot Number: 0
10.7cm Flux: 75 sfu

Solar wind speed: 333.9 km.s-1
Solar wind density: 7.0 protons.cm3

Kp: 1
Bz: 0.4 nT (North)
Bt: 5.4 nT
Dst: 3 nT

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Date: 15 September 2021; 09:45 UT

Summary of Space Weather.
Decaying Sunspots AR2866 is about to dissappear. The geomagnetic conditions are quiet. The
solar wind speed is declining.

Space Weather parameters / observations;

Sunspot Number: 13
10.7cm Flux: 78 sfu

Solar wind speed: 415.8 km.s-1
Solar wind density: 3.9 protons.cm3

Kp: 2
Bz: -2.8 nT (South)
Bt: 4.5 nT
Dst: -26 nT

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Date: 14 September 2021; 23:45 UT

Summary of Space Weather.
Sunspots AR2866 and AR2868 are both ready to dissappear. The geomagnetic conditions are quiet. The
solar wind speed has declined.

Space Weather parameters / observations;

Sunspot Number: 32
10.7cm Flux: 83 sfu

Solar wind speed: 447.8 km.s-1
Solar wind density: 5.3 protons.cm3

Kp: 2
Bz: 0.7 nT (North)
Bt: 4.3 nT
Dst: -26 nT

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Date: 13 September 2021; 10:45 UT

Summary of Space Weather.
Sunspot AR2866 is rapidly decaying. The geomagnetic conditions are quiet. The
solar wind speed is increasing.

Space Weather parameters / observations;

Sunspot Number: 47
10.7cm Flux: 88 sfu

Solar wind speed: 488.0 km.s-1
Solar wind density: 6.4 protons.cm3

Kp: 3
Bz: 8.5 nT (North)
Bt: 9.0 nT
Dst: -8 nT

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Date: 12 September 2021; 19:45 UT

Summary of Space Weather.
Big Sunspot AR2866 is starting to decay. The geomagnetic conditions are quiet. The
solar wind speed has increased.

Space Weather parameters / observations;

Sunspot Number: 93
10.7cm Flux: 92 sfu

Solar wind speed: 343.3 km.s-1
Solar wind density: 6.1 protons.cm3

Kp: 2
Bz: -5.2 nT (South)
Bt: 6.9 nT
Dst: 2 nT

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Date: 11 September 2021; 09:45 UT

Summary of Space Weather.
Sunspots AR2866 and AR2868 are slowly cracking with C-class solar flares. The geomagnetic conditions are quiet. The
solar wind speed has declining.

Space Weather parameters / observations;

Sunspot Number: 96
10.7cm Flux: 100 sfu

Solar wind speed: 319.6 km.s-1
Solar wind density: 7.4 protons.cm3

Kp: 2
Bz: -2.8 nT (South)
Bt: 12.0 nT
Dst: -11 nT

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Date: 10 September 2021; 09:45 UT

Summary of Space Weather.
Sunspots AR2866 and AR2868 are slowly cracking with C-class solar flares. The geomagnetic conditions are quiet. The
solar wind speed has declined.

Space Weather parameters / observations;

Sunspot Number: 124
10.7cm Flux: 100 sfu

Solar wind speed: 343.7 km.s-1
Solar wind density: 9.7 protons.cm3

Kp: 2
Bz: 2.0 nT (North)
Bt: 4.5 nT
Dst: -11 nT

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Date: 09 September 2021; 09:45 UT

Summary of Space Weather.
Sunspots AR2864, AR2866 and AR2868 are all cracking with C2-class solar flares. The geomagnetic conditions are quiet. The
solar wind speed is elevated.

Space Weather parameters / observations;
Sunspot Number: 87
10.7cm Flux: 100 sfu

Solar wind speed: 413.5 km.s-1
Solar wind density: 3.3 protons.cm3

Kp: 2
Bz: -2.0 nT (South)
Bt: 2.7 nT
Dst: -7 nT

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Date: 08 September 2021; 10:45 UT

Summary of Space Weather.
Sunspots AR2864 produced a C2-class solar flare and possibly a CME on sept 8. The geomagnetic conditions are quiet. The
solar wind speed is elevated.

Space Weather parameters / observations;

Sunspot Number: 85
10.7cm Flux: 101 sfu

Solar wind speed: 417.3.3 km.s-1
Solar wind density: 9.2 protons.cm3

Kp: 3
Bz: -5.3 nT (South)
Bt: 6.6 nT
Dst: 2 nT

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Date: 07 September 2021; 10:45 UT

Summary of Space Weather.
Sunspots AR2866 and AR2868 are cracking with minor B-class solar flares. The geomagnetic conditions are quiet at all
levels. The solar wind speed is declining.

Space Weather parameters / observations;
Sunspot Number: 80
10.7cm Flux: 100 sfu

Solar wind speed: 297.3 km.s-1
Solar wind density: 9.7 protons.cm3

Kp: 2
Bz: 1.8 nT (North)
Bt: 5.5 nT
Dst: -7 nT

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Date: 07 September 2021; 10:45 UT

Summary of Space Weather
Sunspots AR2866 and AR2868 are cracking with minor B-class solar flares. The geomagnetic conditions are quiet at all
levels. The solar wind speed is declining.

Space Weather parameters / observations;
Sunspot Number: 80
10.7cm Flux: 100 sfu

Solar wind speed: 297.3 km.s-1
Solar wind density: 9.7 protons.cm3

Kp: 2
Bz: 1.8 nT (North)
Bt: 5.5 nT
Dst: -7 nT

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Date: 06 August 2021; 10:14 UT

Summary of Space Weather.
Sunspot AR2864 AR2866 and AR2868 have all grown in the last 24 hours but remaun mostly quiet. The geomagnetic
conditions are quiet at all levels. The solar wind speed has increased.

Space Weather parameters / observations;
Sunspot Number: 66
10.7cm Flux: 94 sfu

Solar wind speed: 320.6 km.s-1
Solar wind density: 8.6 protons.cm3

Kp: 1
Bz: -0.7 nT (South)
Bt: 3.2 nT
Dst: 6 nT

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Date: 05 September 2021; 09:42 UT

Summary of Space Weather.
Sunspot AR2863 poses a slight threat for C- class solar flares. The geomagnetic
conditions are quiet at all levels. The solar wind speed has declined.

Space Weather parameters / observations;

Sunspot Number: 68
10.7cm Flux: 87 sfu

Solar wind speed: 315.8 km.s-1
Solar wind density: 9.0 protons.cm3

Kp: 1
Bz: -0.7 nT (South)
Bt: 6.0 nT
Dst: -1 nT

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