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Product: Daily Forecast of Geomagnetic Activity
Issued: 2025 June 29 07:33UTC
Prepared by the Athens Space Weather Forecasting Center
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I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 28.06.2025 at 23:00 UTC was 122 sfu.
The background X-Ray flux is at the class B6.0 level.
No obviously Earth directed CMEs were observed in available LASCO imagery on June 26-28.
A coronal hole (CH1304) at southern hemisphere will rotate into an Earth facing position on June 29 - July 02.

II. Solar Energetic Particle Events
Protons and electrons fluxes are quiet

III. Interplanetary and Geomagnetic conditions
The solar wind speed measured by ACE satellite reached the max value 684 Km/s on June 28 at 11:40 UT during the last 24 hours.
The solar wind speed from STEREO A was detected 400 Km/s during the last 24 hours.
The vertical component of IMF Bz reached the max value -3 nT on June 28 at 12:05 UT during the last 24 hours.
The geomagnetic field was at quiet to unsettled levels during the last 24 hours.
The Kp index now is at quiet levels with Kp=2.

IV. 3-day Geomagnetic Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on June 29 and at quiet levels on June 30-July 01.

Date	Ap index forecast	Geomagnetic Activity level	
29.06.2025	08	Quiet to Unsettled	
30.06.2025	05	Quiet 	
01.07.2025	05	Quiet 	

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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
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