The current forecast calls for combined CME arrival around mid-afternoon EDT of June 4, with up to G3 levels possible afterwards. CME passage would likely continue into the evening and possibly overnight hours of June 5. Stay aware at https://t.co/TV7Yw6Lq1Y
@SolidKroket Yo sin un solo resfriado desde 2018 y sin coronavirus (quizás asintomático, no lo sé) y con tres vacunas.
Solo empleando medidas de higiene básicas.
SEGUIMIENTO DE EVENTO
Fecha: 20 de enero de 2026
Institución responsable: Servicio de Clima Espacial México (SCIESMEX) – Laboratorio Nacional de Clima Espacial (LANCE), Instituto de Geofísica, UNAM
The X1.9 coronal mass ejection has arrived! First indications looks like it is very strong and fast with the Bt increasing to a mindblowing 86nT at maximum and a maximum southward Bz component of -38nT.
Note that due to the ongoing solar proton storm, real time solar wind data from ACE is not reliable! The real-time IMF (Bt, Bz) parameters are accurate.
Expect severe G4 to extreme G5 geomagnetic storm conditions if these values persist.
Follow it live on https://t.co/JLgxfyqYLe
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2026 Jan 19 1902 UTC
Valid To: 2026 Jan 20 1500 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
Issue Time: 2026 Jan 19 1906 UTC
https://t.co/ZbtuNtJdza
An S4 severe solar radiation storm is now in progress - this is the largest solar radiation storm in over 20 years. The last time S4 levels were observed was in October, 2003. Potential effects are mainly limited to space launch, aviation, and satellite operations.
Very strong S4 Solar Radiation Storm - Blackout of HF radio through the polar regions and navigation position errors, severe effects on satellite electronics, high radiation risk to astronauts on EVA and high-latitude aircraft passengers
Follow live on https://t.co/HAKRHFIDdF
WATCH: Geomagnetic Storm Category G4 or Greater Predicted
Highest Storm Level Predicted by Day:
Jan 20: G4 (Severe) Jan 21: G1 (Minor) Jan 22: None (Below G1)
Issue Time: 2026 Jan 19 1203 UTC
https://t.co/ZbtuNtJdza
G4 Watch in effect for 20 Jan UTC-day (late 19 Jan EST to early 20 Jan EST) due to anticipated CME arrival at Earth. We will make a video update later this afternoon about this activity. Look for the latest info & updates by staying space weather aware at https://t.co/kwJj9rIpub
G3 conditions are currently being observed. G4 conditions with a chance for higher levels remain possible throughout the day as another CME is expected to arrive midday (EST).