***********************************************************************
Product: Daily Forecast of Geomagnetic Activity
Issued: 2023 July 23 07:43UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************

1. Solar activity
Solar activity was decreasing stable during the past 24 hours.
Solar Flux (10.7 cm) measured on 22.07.2023 at 20:00 UTC was 174 sfu.
The background X-Ray flux is at the class C1.8 level.
The geomagnetic field was at quiet to unsettled levels on July 22.
A M3.2 class solar flare erupted on July 22 at 03:37 UT (peak time) from AR3372 and a radioblackout (R1) was observed.
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: 428 km/s.
Solar Wind speed from STEREO A: 400 km/s.
Solar Wind speed from STEREO B: - km/s.
The southward component Bz is: 1 nT south.

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

4. Coronal Holes
A coronal hole (CH1161) at southern hemisphere was Earth facing position on July 18.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on July 23-25.

   Date      Estimated Ap index      Expected geom. storm
2023.07.23           08                        -
2023.07.24           10                        -
2023.07.25           08                        -

***************************************************************************
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
***************************************************************************