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Product: Daily Forecast of Geomagnetic Activity
Issued: 2019 October 04 06:24UTC
Prepared by the Athens Space Weather Forecasting Center
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1. Solar activity
Solar activity was decreasing stable during the past 24 hours.
Solar Flux (10.7 cm) measured on 03.10.2019 at 20:00 UTC was 68 sfu.
The background X-Ray flux is at the class A6 level.
The geomagnetic field was at quiet levels on October 3.
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: 375 km/s.
Solar Wind speed from STEREO A: 340 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component Bz is: 1 nT north.

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

4. Coronal Holes
A poorly defined southern hemisphere coronal hole (CH939) was in Earth facing position on September 30-October 1.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels, with a chance for unsettled intervals, on October 4-5 due to CH939 effects and at quiet levels on October 6.

   Date      Estimated Ap index      Expected geom. storm
2019.10.04           05                        -
2019.10.05           04                        -
2019.10.06           03                        -

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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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