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Product: Daily Forecast of Geomagnetic Activity
Issued: 2019 August 19 06:46UTC
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 18.08.2019 at 20:00 UTC was 68 sfu.
The background X-Ray flux is at the class A6 level.
The geomagnetic field was at quiet to unsettled levels on August 18.
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: 370 km/s.
Solar Wind speed from STEREO A: 350 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 coronal hole (CH) on the southern hemispere of the visible solar disk was in Earth facing position on August 16-17.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at almost quiet levels with a chance for unsettled levels on August 19-21 due to weak effects from the CH.

   Date      Estimated Ap index      Expected geom. storm
2019.08.19           04                        -
2019.08.20           06                        -
2019.08.21           07                        -

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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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