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NOAA Issues G3 Geomagnetic Storm Warning as CME Arrives, Adds Weekend Alerts

Final severity depends on the CME’s magnetic orientation measured by L1 monitors.

Una tormenta solar G3 podría afectar comunicaciones entre el 6 y 7 de noviembre, informó la NOAA.
La Administración Nacional Oceánica y Atmosférica (NOAA) confirmó la llegada de una eyección de masa coronal proveniente del Sol, que alcanzará la Tierra a finales de esta semana. (Imagen creada por El Comercio MAG usando la IA de "Perplexity")
La Administración Nacional Oceánica y Atmosférica (NOAA) emitió una advertencia por tormenta geomagnética fuerte (nivel G3) para los días 6 y 7 de noviembre

Overview

  • NOAA’s Space Weather Prediction Center forecast a G3 (strong) geomagnetic storm from a coronal mass ejection expected to arrive between Thursday night and Friday morning Eastern Time.
  • Forecasters said HF radio links, satellite navigation, and power grids could experience short‑lived disruptions, with auroras possible far south of usual viewing zones.
  • The event’s impact hinges on real‑time solar wind speed and magnetic field orientation, with a typical sequence of an initial shock front followed by the magnetic cloud.
  • New SWPC outlooks call for additional geomagnetic activity over the weekend, including G2 on Nov. 8, G1 on Nov. 9, and G2 on Nov. 10 tied to a second CME expected Saturday.
  • Media reports highlight potential aurora visibility across many northern U.S. states, including parts of the Midwest, while noting expectations for limited infrastructure effects and no widespread damage reported.