Affichage des archives de mercredi, 15 mai 2024
Rapport d'activité solaire
Rapport d'activité solaire et géophysique 2024 May 15 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 136 publié à 2200Z le 15 May 2024IA. Analyse des régions solaires actives et activité du 14-2100Z au 15-2100Z Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a X2 event observed at
15/1438Z. There are currently 12 numbered sunspot regions on the disk.
IB. Prévisions d'activité solaire
Solar activity is expected to be moderate
with a chance for X-class flares on day one (16 May) and expected to be
low with a chance for M-class flares and a slight chance for an X-class
flare on days two and three (17 May, 18 May).
IIA. Résumé de l'activité géophysique du 14-2100Z au 15-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 595 km/s at 15/0012Z. Total IMF reached 13
nT at 15/1029Z. The maximum southward component of Bz reached -5 nT at
15/1920Z. Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 31 pfu at 15/0530Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 1496 pfu.
IIB. Prévision de l'activité géophysique
The geomagnetic field is expected
to be at quiet to active levels on days one and two (16 May, 17 May) and
quiet levels on day three (18 May). Protons are expected to cross
threshold on day one (16 May), have a slight chance of crossing
threshold on day two (17 May) and have a slight chance of crossing
threshold on day three (18 May).
III. Probabilité d'éruption solaire du 16 May au 18 May
| Classe M | 75% | 40% | 40% |
| Classe X | 40% | 10% | 10% |
| Proton | 99% | 15% | 10% |
| PCAF | yellow | ||
IV. Flux Penticton 10.7 cm
Observé 15 May 216 Prévisionnel 16 May-18 May 200/190/180 Moyenne des 90 derniers jours 15 May 166
V. Indice géomagnetique A
Observé Afr/Ap 14 May 008/007 Estimé Afr/Ap 15 May 010/013 Prévisionnel Afr/Ap 16 May-18 May 010/012-010/012-007/008
VI. Probabilités d'activité géomagnétique du 16 May au 18 May
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 35% | 35% | 20% |
| Tempête mineure | 10% | 10% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 15% | 15% | 15% |
| Tempête mineure | 30% | 30% | 25% |
| Tempête majeure/sévère | 45% | 45% | 25% |
Toutes les heures sont indiquées en UTC
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La Météo Spatiale en faits
| Dernière classe X | 18/01/2026 | X1.9 |
| Dernière classe M | 21/01/2026 | M3.4 |
| Dernier orage géomagnétique | 22/01/2026 | Kp5+ (G1) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
| Nombre mensuel moyen de taches solaires | |
|---|---|
| décembre 2025 | 124 +32.2 |
| janvier 2026 | 119.4 -4.6 |
| 30 derniers jours | 121.8 +8.9 |