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Product: Daily Forecast of Geomagnetic Activity
Issued: 2023 March 19 08:10UTC
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 18.03.2023 at 20:00 UTC was 140 sfu.
The background X-Ray flux is at the class C1.2 level.
The geomagnetic field was at quiet to unsettled levels on March 18.
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: 434 km/s.
Solar Wind speed from STEREO A: 400 km/s.
Solar Wind speed from STEREO B: - km/s.
The southward component Bz is: 2 nT north.

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

4. Coronal Holes
A coronal hole (CH1135) at southern hemisphere will rotate across the central meridian on March 16-17.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on March 19 and at quiet to active levels on March 20-21 due to effects from CH1135.

   Date      Estimated Ap index      Expected geom. storm
2023.03.19           07                        -
2023.03.20           12                        -
2023.03.21           15                        -

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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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