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Product: Daily Forecast of Geomagnetic Activity
Issued: 2023 May 02 08:01UTC
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 01.05.2023 at 20:00 UTC was 148 sfu.
The background X-Ray flux is at the class C1.0 level.
The geomagnetic field was at quiet to active levels on May 01.
AR3288 erupted on May 01 at 13:09 peak time producing a M7.1 class solar flare and a radioblackout of category R2.
A faint CME erupted from AR13288 on April 29 starting around 01:30 UT. This CME could reach Earth on May 02  between at 02:45 UT and at 08:42 UT according to EAM predictions.
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: 505 km/s.
Solar Wind speed from STEREO A: - 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 coronal hole (CH1143) at northern hemisphere rotated across the central meridian on April 27-28. A  coronal hole (CH1144) at southern hemisphere will likely become Earth facing on May 02-03.

5. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on May 02-03 due to the effect of CME observed on April 29 and at quiet to unsettled levels on May 04.

   Date      Estimated Ap index      Expected geom. storm
2023.05.02           15                        -
2023.05.03           12                        -
2023.05.04           08                        -

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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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