***********************************************************************
Product: Daily Forecast of Geomagnetic Activity
Issued: 2024 December 21 08:11UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************
I. Solar activity--Current StatusSolar Flux (10.7cm) measured on 20.12.2024 at 23:00 UTC was 175 sfu.
The background X-Ray flux is at the class C2.7 level.
No obviously Earth directed CMEs were observed in available LASCO imagery on December 18.
A coronal hole (CH1263) at southern hemisphere rotated across the central meridian on December 19-20.
II. Solar Energetic Particle EventsProtons and electrons fluxes are quiet.
III. Interplanetary and Geomagnetic conditionsThe solar wind speed measured by ACE satellite reached the max value 541 Km/s on December 20 at 12:05 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 -8 nT on December 20 at 15:15 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 unsettled levels with Kp=3.
IV. 3-day Geomagnetic Activity ForecastThe geomagnetic field is expected to be at quiet to unsettled levels on December 21-23.
Date | Ap index forecast | Geomagnetic Activity level |
---|
21.12.2024 | 08 | Quiet to Unsettled |
22.12.2024 | 08 | Quiet to Unsettled |
23.12.2024 | 10 | Quiet to Unsettled |
***************************************************************************
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
***************************************************************************