*********************************************************************** Product: Daily Forecast of Geomagnetic Activity Issued: 2025 February 05 05:24UTC Prepared by the Athens Space Weather Forecasting Center ***********************************************************************
I. Solar activity --Current Status Solar Flux (10.7cm) measured on 04.02.2025 at 23:00 UTC was 212 sfu. The background X-Ray flux is at the class C2.2 level. Five M-class solar flares were produced on February 04 and the largest was the M4.7. AR3981 erupted on February 04 at 11:21 UT peak time producing a M4.7-class solar flare and a radio blackout of category R1. No obviously Earth directed CMEs were observed in available LASCO imagery on February 01-03. An equatorial coronal hole (CH1268) was Earth facing position on January 28-February 01. An equatorial coronal hole (CH1269) will rotate across the central meridian on February 06-07.
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 454 Km/s on February 04 at 06:10 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 February 04 at 16:45 UT during the last 24 hours. The geomagnetic field was at quiet levels during the last 24 hours. The Kp index now is at quiet levels with Kp=1.
IV. 3-day Geomagnetic Activity Forecast The geomagnetic field is expected to be at quiet levels on February 05-07.
Date
Ap index forecast
Geomagnetic Activity level
05.02.2025
05
Quiet
06.02.2025
05
Quiet
07.02.2025
05
Quiet
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