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Product: Daily Forecast of Geomagnetic Activity
Issued: 2019 May 24 05:26UTC
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 23.05.2019 at 20:00 UTC was 67 sfu.
The background X-Ray flux is at the class A6 level.
The geomagnetic field was at quiet levels on May 23.
No obviously Earth directed CMEs were observed in available LASCO imagery.
The Kp index now is at quiet levels with Kp=1.

2. Solar Wind Geomagnetic Activity
Solar Wind speed from ACE: 330 km/s.
Solar Wind speed from STEREO A: 475 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 new coronal hole (CH919) on the southern hemisphere of the visible solar disk will be in Earth facing position on May 23-25.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels on May 24-26 with a chance for unsettled intervals.

Date Estimated Ap index Expected geom. storm
2019.05.24 03 -
2019.05.25 05 -
2019.05.26 04 -

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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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