Affichage des archives de jeudi, 18 mai 2017

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Rapports
Activité solaire
Activité aurorale
Failed storm prediction, Next coronal hole

The NOAA SWPC had a moderate G2 geomagnetic storm watch in effect during the past few days but we unfortunately haven't even reached the minor G1 geomagnetic storm level. The G2 geomagnetic storm watch from the NOAA Space Weather Prediction Center was a result of a possible coronal mass ejection (CME) impact, something we indeed never mentioned on the site or on our social media pages. We did not believe this solar storm had an earth-bound component so choose to not mention it, a strategy that proved to be the right one. A minor G1 geomagnetic storm was however predicted due to a coronal hole solar wind stream but the stream was weaker than expected and only caused active geomagnetic conditions (Kp4) on 15 May. We are however getting another chance to reach geomagnetic storm levels thanks to yet another coronal hole.

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La Météo Spatiale en faits

Dernière classe X08/12/2025X1.1
Dernière classe M17/01/2026M1.1
Dernier orage géomagnétique17/01/2026Kp5+ (G1)
Jours sans taches solaires
Dernier jour sans taches solaires08/06/2022
Nombre mensuel moyen de taches solaires
décembre 2025124 +32.2
janvier 202696.7 -27.3
30 derniers jours101.8 -5.9

A ce jour dans l'histoire*

Éruptions solaires
12005M6.58
22000M5.64
31999M2.96
42012M2.5
52005M2.32
DstG
12005-103G4
21995-95G2
31958-72G1
41960-59G2
51989-55
*depuis 1994

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