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Product: Daily Forecast of Geomagnetic Activity
Issued: 2016 May 11 05:38UTC
Prepared by the Athens Space Weather Forecasting Center
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1. Solar activity
Solar activity was almost stable during the past 24 hours.
Solar Flux (10.7 cm) measured on 10.05.2016 at 20:00 UTC was 89 sfu.
The background X-Ray flux is at the class B2 level.
The geomagnetic field was at quiet to active levels on May 9.
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: 530 km/s.
Solar Wind speed from STEREO A: 600 km/s.
Solar Wind speed from STEREO B: --- km/s.
The southward component of Bz is: 1 nT south.

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

4. Coronal Holes
A recurrent northern hemisphere coronal hole (CH734) will likely rotate across the central meridian on May 12-13, no disturbance was associated with the CH on the previous rotation.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on May 11 and at quiet levels on May. 12-13.

    Date         Estimated Geomagnetic Ap index
2016.05.11                    8
2016.05.12                    5
2016.05.13                    4

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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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