Publié: 2013 May 20 1201 UTC
Eruptive (C-class flares expected, probability >=50%)
Quiet (A<20 and K<4)
Quiet
| Flux de 10 cm | Ap | |
|---|---|---|
| 20 May 2013 | 135 | 011 |
| 21 May 2013 | 133 | 007 |
| 22 May 2013 | 133 | 007 |
Solar activity was eruptive with 7 C flares mostly originating from NOAA 1750 (Catania 78) and 1 M1.7 flare from an active region just behind the east limb peaking on May 20th 05:25 UT. There is insufficient data available to determine an associated CME, but chances for arrival on Earth are very low due to its location. Because the active region 1750 on the West limb can still produce M flares, there is a possibility for a proton event. A shock corresponding to the CME of May 17th arrived to the Earth at 22:23 UT on May 19 causing active geomagnetic conditions (K Dourbes = 4). Geomagnetic conditions are currently quiet again and are expected to remain so for the next 48 hours.
Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 077, sur la base de 08 stations.
| Nombre de Wolf, observé par Catania | /// |
| Flux solaire à 10 cm | 135 |
| AK Chambon La Forêt | 018 |
| AK Wingst | 014 |
| Ap estimé | 014 |
| Nombre international de taches solaires estimé | 087 - Basé sur 20 stations |
| Jour | Commencer | Max | Fin | Loc | Force | OP | 10cm | Catania/NOAA | Types de sursaut radio |
|---|---|---|---|---|---|---|---|---|---|
| 20 | 0516 | 0525 | 0603 | ---- | M1.7 | --/---- |
Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive
Toutes les heures sont indiquées en UTC
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