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Daily bulletin on solar and geomagnetic activity from the SIDC
Emesso: 2024 Aug 25 1231 UTC
SIDC Forecast
Brillamenti solari
M-class flares expected (probability >=50%)
Geomagnetism
Quiet (A<20 and K<4)
Protoni solari
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 25 Aug 2024 | 233 | 007 |
| 26 Aug 2024 | 234 | 011 |
| 27 Aug 2024 | 234 | 012 |
Solar Active Regions and flaring
Solar flaring activity was moderate over the past 24 hours. The largest flare was a M1.4-flare, with peak time 23:24 UTC on August 24 2024, from NOAA AR 3800 (beta-gamma). There are currently 9 numbered active regions on the visible disk, with NOAA AR 3796 (beta- gamma) and NOAA AR 3800 (beta-gamma) producing the M-class flares. The solar flaring activity is expected to be at moderate levels over the next 24 hours with C-class flares expected, M-class flares probable and a small chance of X-class flares.
Espulsioni di massa coronale
No new Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images.
Vento solare
The solar wind at the Earth remained slow over the last 24 hours. The solar wind speed slightly decreased from around 370km/s to around 350 km/s and the interplanetary magnetic field was stable around 5 nT. The Bz reached a minimum value of -6 nT. Slow solar wind conditions are expected in the next 24h.
Geomagnetism
Geomagnetic conditions were globally and locally quiet to unsettled (Kp 3 and K Bel 3). Quiet conditions are expected in the next 24 hours.
Proton flux levels
The greater than 10 MeV proton flux remained below the 10 pfu threshold and is expected to remain so over the next days.
Electron fluxes at geostationary orbit
The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, and is expected to remain below the threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to remain so.
Today's estimated international sunspot number (ISN): 205, based on 18 stations.Solar indices for 24 Aug 2024
| Wolf number Catania | /// |
| 10cm solar flux | 232 |
| AK Chambon La Forêt | 017 |
| AK Wingst | 009 |
| Estimated Ap | 011 |
| Estimated international sunspot number | 235 - Based on 20 stations |
Noticeable events summary
| Day | Begin | Max | Fine | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types |
|---|---|---|---|---|---|---|---|---|---|
| 24 | 1846 | 1858 | 1917 | S04E03 | M1.0 | S | 58/3796 | ||
| 24 | 1917 | 1930 | 1935 | ---- | M1.4 | 58/3796 | |||
| 24 | 2128 | 2146 | 2155 | S25E09 | M1.3 | 1F | 60/3800 | ||
| 24 | 2318 | 2324 | 2332 | S25E08 | M1.7 | 1N | 60/3800 |
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
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Notizie sul meteo spaziale
| Ultimo brillamento X | 2026/02/04 | X4.3 |
| Ultimo brillamento M | 2026/02/12 | M1.4 |
| Ultima tempesta geomagnetica | 2026/02/05 | Kp5+ (G1) |
| Giorni senza macchie | |
|---|---|
| Ultimo giorno senza macchie | 2022/06/08 |
| Media mensile Numero di Macchie Solari | |
|---|---|
| gennaio 2026 | 112.6 -11.4 |
| febbraio 2026 | 125.3 +12.7 |
| Ultimi 30 giorni | 133.2 +36.4 |