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Product: Daily Forecast of Geomagnetic Activity
Issued: 2017 March 30 04:18UTC
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 29.03.2017 at 20:00 UTC was 83 sfu.
The background X-Ray flux is at the class A9 level.
The geomagnetic field was at almost quiet to active levels on March 29.
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at unsettled levels with Kp=3.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 620 km/s.
Solar Wind speed from STEREO A: 360 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component Bz is: 3 nT south.

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

4. Coronal Holes
A new equatorial coronal hole (CH799) will be in Earth facing position on March 30-31. A high speed stream from this CH could reach Earth on the first hours of April 2.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on March 30-31 and at quiet levels on April 1.

   Date      Estimated Ap index      Expected geom. storm
2017.03.30           14                        -
2017.03.31           11                        -
2017.04.01           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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