Date: 30 December 2021; 10:35 UT

Summary of Space Weather.
Sunspot AR2918 that earlier produced 2 M-class solar flares is dedacying rapidly and no longer poses any
threat for strong flares. The geomagnetic conditions are quiet. The solar wind speed has increased.

Space Weather parameters / observations;

Sunspot Number: 79
10.7cm Flux: 111 sfu

Solar wind speed: 434.4 km.s-1
Solar wind density: 6.6 protons.cm3

Kp: 1
Bz: 5.6 nT (North)
Bt: 5.9 nT
Dst: 0 nT

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Date: 29 December 2021; 23:45 UT

Summary of Space Weather.
Sunspot AR2918 has a ‘beta-gamma’magnetic field tha harbours energy for M-class solar flares. The
geomagnetic conditions are quiet. The solar wind speed is declining.

Space Weather parameters / observations;

Sunspot Number: 107
10.7cm Flux: 121 sfu

Solar wind speed: 427.1 km.s-1
Solar wind density: 24.8 protons.cm3

Kp: 2
Bz: 8.7 nT (North)
Bt: 17.8 nT
Dst: 28 nT

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Date: 28 December 2021; 09:44 UT

Summary of Space Weather.
Sunspot AR2916 is big and quiet, it has a relatively simple ‘beta-class’ magnetic field that
poses little threat for strong flares. The geomagnetic conditions are quiet. The solar wind speed has
increased.

Space Weather parameters / observations;

Sunspot Number: 85
10.7cm Flux: 124 sfu

Solar wind speed: 466.6 km.s-1
Solar wind density: 7.9 protons.cm3

Kp: 3
Bz: -0.9 nT (South)
Bt: 7.8 nT
Dst: -19 nT

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Date: 28 December 2021; 09:45 UT

Summary of Space Weather.
Although sunspot AR2916 continues to grow, its magnetic field has simplified thereby decreasing the
chances of flares. The geomagnetic conditions are quiet. The solar wind speed has declined.

Space Weather parameters / observations;

Sunspot Number: 95
10.7cm Flux: 125 sfu

Solar wind speed: 375.1 km.s-1
Solar wind density: 23.3 protons.cm3

Kp: 2
Bz: -3.8 nT (South)
Bt: 9.0 nT
Dst: 2 nT

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Date: 25 December 2021; 11:45 UT

Summary of Space Weather.
Sunspots AR2916 is growing rapidly and can be seen as a potential source of flares.
The geomagnetic conditions are quiet. The solar wind speed has slightly increased.

Space Weather parameters / observations;

Sunspot Number: 145
10.7cm Flux: 126 sfu

Solar wind speed: 463.0 km.s-1
Solar wind density: 8.8 protons.cm3

Kp: 3
Bz: 1.8 nT (North)
Bt: 5.3 nT
Dst: -6 nT

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Date: 24 December 2021; 10:45 UT

Summary of Space Weather.
Sunspots AR2907 and AR2908 have’beta-gamma’ magnetic fields that harbour energy for M-class solar flares.
The geomagnetic conditions are quiet. The solar wind speed has declined.

Space Weather parameters / observations;

Sunspot Number: 143
10.7cm Flux: 130 sfu

Solar wind speed: 441.9 km.s-1
Solar wind density: 4.6 protons.cm3

Kp: 1
Bz: 2.3 nT (North)
Bt: 3.9 nT
Dst: 7 nT

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Date: 23 December 2021; 10:14 UT

Summary of Space Weather.
Sunspots AR2907 and AR2908 have’beta-gamma’ magnetic fields that harbour energy for M-class solar flares.
The geomagnetic conditions are quiet. The solar wind speed is moderately high.

Space Weather parameters / observations;

Sunspot Number: 137
10.7cm Flux: 140 sfu

Solar wind speed: 521.3 km.s-1
Solar wind density: 12.9 protons.cm3

Kp: 0
Bz: 1.1 nT (North)
Bt: 4.4 nT
Dst: -5 nT

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Date: 22 December 2021; 09:45 UT

Summary of Space Weather.
There are 10 numbered sunspot groups on the solar disk. This is the highest since the peak of the previous
solar cycle almost 11 years ago. The geomagnetic conditions are quiet. The solar wind speed is moderately
high.

Space Weather parameters / observations;

Sunspot Number: 147
10.7cm Flux: 137 sfu

Solar wind speed: 600.6 km.s-1
Solar wind density: 13.1 protons.cm3

Kp: 3
Bz: 4.3 nT (North)
Bt: 4.8 nT
Dst: -16 nT

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Date: 21 December 2021; 09:45 UT

Summary of Space Weather.
There are eight numbered sunspots on the solar disk. This is the highest seeing in more than than four
years. The geomagnetic conditions are quiet. The solar wind speed is moderately high.

Space Weather parameters / observations;

Sunspot Number: 115
10.7cm Flux: 115 sfu

Solar wind speed: 619.2 km.s-1
Solar wind density: 14.8 protons.cm3

Kp: 2
Bz: 1.7 nT (North)
Bt: 5.3 nT
Dst: -16 nT

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Date: 20 December 2021; 09:46 UT

Summary of Space Weather.
Sunspots AR2907 and AR2908 have ‘beta-gamma’ magnetic fields that harbor energy for M-class solar flares.
The geomagnetic conditions are quiet. The solar wind speed is moderately high.

Space Weather parameters / observations;

Sunspot Number: 109
10.7cm Flux: 115 sfu

Solar wind speed: 520.0 km.s-1
Solar wind density: 9.3 protons.cm3

Kp: 2
Bz: 5.8 nT (North)
Bt: 7.6 nT
Dst: -21 nT

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Date: 19 December 2021; 09:44 UT

Summary of Space Weather.
Sunspots AR2907 and AR2908 have ‘beta-gamma’ magnetic fields that harbor energy for M-class solar flares.
The geomagnetic conditions are quiet. The solar wind speed is declining.

Space Weather parameters / observations;

Sunspot Number: 117
10.7cm Flux: 121 sfu

Solar wind speed: 333.0 km.s-1
Solar wind density: 7.2 protons.cm3

Kp: 0
Bz: -1.6 nT (South)
Bt: 4.6 nT
Dst: 12 nT

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Date: 18 December 2021; 09:44 UT

Summary of Space Weather.
Sunspots AR2907 and AR2908 have ‘beta-gamma’ magnetic fields that harbor energy for M-class solar flares.
The geomagnetic conditions are quiet. The solar wind speed is declining.

Space Weather parameters / observations;

Sunspot Number: 119
10.7cm Flux: 121 sfu

Solar wind speed: 343.1 km.s-1
Solar wind density: 3.6 protons.cm3

Kp: 1
Bz: -0.4 nT (South)
Bt: 3.1 nT
Dst: 6 nT

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Date: 17 December 2021; 10:46 UT

Summary of Space Weather.
New sunspot AR2911 is very active and capable of M-class solar flares. The geomagnetic conditions are quiet. The solar
wind speed has declined.

Space Weather parameters / observations;

Sunspot Number: 127
10.7cm Flux: 118 sfu

Solar wind speed: 395.2 km.s-1
Solar wind density: 6.2 protons.cm3

Kp: 1
Bz: 3.0 nT (North)
Bt: 2.4 nT
Dst: 5 nT

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Date: 16 December 2021; 10:45 UT

Summary of Space Weather.
Sunspot AR2907 is crackling with C-class solar flares. The geomagnetic conditions are quiet. The solar
wind speed is moderately high.

Space Weather parameters / observations;

Sunspot Number: 79
10.7cm Flux: 103 sfu

Solar wind speed: 549.7 km.s-1
Solar wind density: 8.0 protons.cm3

Kp: 3
Bz: 3.8 nT (North)
Bt: 5.5 nT
Dst: -3 nT

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Date: 15 December 2021; 09:45 UT

Summary of Space Weather.
Sunspot AR2907is crackling with C-class solar flares. The geomagnetic conditions are quiet. The solar
wind speed is moderately high.

Space Weather parameters / observations;

Sunspot Number: 40
10.7cm Flux: 89 sfu

Solar wind speed: 529.8 km.s-1
Solar wind density: 11.1 protons.cm3

Kp: 2
Bz: 2.3 nT (North)
Bt: 7.4 nT
Dst: 12 nT

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Date: 14 December 2021; 17:14 UT

Summary of Space Weather.
New sets of Sunspots are popping up on the solar disc but none poses a threat for strong solar flares yet. The
geomagnetic conditions are quiet. The solar wind speed has declined.

Space Weather parameters / observations;

Sunspot Number: 40
10.7cm Flux: 81 sfu

Solar wind speed: 316.7 km.s-1
Solar wind density: 11.3 protons.cm3

Kp: 1
Bz: -2.4 nT (South)
Bt: 3.2 nT
Dst: -1 nT

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Date: 13 December 2021; 11:45 UT

Summary of Space Weather.
Sunspot AR2905 has an uncomplicated, stable magnetic field that poses little threat for storng magnetic
flares. The geomagnetic conditions are quiet. The solar
wind speed has increased.

Space Weather parameters / observations;

Sunspot Number: 12
10.7cm Flux: 80 sfu

Solar wind speed: 323.4 km.s-1
Solar wind density: 16.1 protons.cm3

Kp: 3
Bz: 4.7 nT (North)
Bt: 6.6 nT
Dst: -2 nT

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Date: 11 December 2021; 23:45 UT

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

Space Weather parameters / observations;

Sunspot Number: 0
10.7cm Flux: 77 sfu

Solar wind speed: 301.8 km.s-1
Solar wind density: 11.1 protons.cm3

Kp: 1
Bz: 0.5 nT (North)
Bt: 6.4 nT
Dst: 6 nT

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Date: 12 December 2021; 11:45 UT

Summary of Space Weather.
A sunspot is emerging on the solar disk. The geomagnetic conditions are quiet at all levels. The solar
wind speed is declining.

Space Weather parameters / observations;

Sunspot Number: 0
10.7cm Flux: 76 sfu

Solar wind speed: 301.6 km.s-1
Solar wind density: 10.2 protons.cm3

Kp: 0
Bz: 0.3 nT (North)
Bt: 5.4 nT
Dst: -4 nT

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Date: 11 December 2021; 23:45 UT

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

Space Weather parameters / observations;

Sunspot Number: 0
10.7cm Flux: 77 sfu

Solar wind speed: 301.8 km.s-1
Solar wind density: 11.1 protons.cm3

Kp: 1
Bz: 0.5 nT (North)
Bt: 6.4 nT
Dst: 6 nT

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