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Product: Daily Forecast of Geomagnetic Activity
Issued: 2021 September 08 07:14UTC
Prepared by the Athens Space Weather Forecasting Center
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1. Solar activity
Solar activity was increasing during the past 24 hours.
Solar Flux (10.7 cm) measured on 07.09.2021 at 20:00 UTC was 101 sfu.
The background X-Ray flux is at the class B2.5 level.
The geomagnetic field was at quiet to unsettled levels on September 7.
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at almost quiet levels with Kp=2.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 400 km/s.
Solar Wind speed from STEREO A: 380 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component Bz is: 7 nT south.

3. Solar Energetic Particle Events
Protons and electrons are quiet.

4. Coronal Holes
No obvious coronal holes are currently in the visible solar disk.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on Sep. 8 and at quiet levels on Sep. 9-10.

   Date      Estimated Ap index      Expected geom. storm
2021.09.08           07                        -
2021.09.09           03                        -
2021.09.10           02                        -

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Athens Space Weather Forecasting Center
Physics Department, National & Kapodistrian University of Athens
Athens Neutron Monitor Station A.NE.MO.S
Tel.: +30 210 727 6901
email: spaceweather@phys.uoa.gr
URL: http://spaceweather.phys.uoa.gr
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