Space Weather

Space Weather

Space weather describes changing environmental conditions in near-Earth space. Magnetic fields, radiation, particles and matter, which have been ejected from the Sun, can interact with the Earth’s upper atmosphere and surrounding magnetic field to produce a  variety of effects.

Image courtesy of NASA/SDO and the AIA, EVE, and HMI science teams

Space weather notifications

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Aurora forecasts

Northern Hemisphere

No significant auroral activity is expected in the coming days.

Southern Hemisphere

No significant auroral activity is expected in the coming days.

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Forecast overview

Space Weather Forecast Headline: No significant activity expected.

Analysis of Space Weather Activity over past 24 hours

Solar Activity: Solar activity was very low over the past 24 hours, with no sunspot regions or Coronal Mass Ejections (CMEs) observed.

Solar Wind / Geomagnetic Activity: The solar wind has remained near background levels over the past 24 hours, with some slight enhancement overnight resulting in a short unsettled period between midnight and 0300 UTC (Kp3), otherwise geomagnetic activity was mainly Quiet (Kp0-2).

Energetic Particles / Solar Radiation: No solar radiation storms were observed.

 

Four-Day Space Weather Forecast Summary

Solar Activity: Solar activity is likely to remain very low through this forecast period, with no activity from sunspots expected.

Solar Wind / Geomagnetic Activity: There are no Earth-directed interplanetary CMEs, and geomagnetic activity is expected to be mainly Quiet (Kp0-2) through the next four days, with perhaps a chance of the odd Unsettled period (Kp3) during Day 1 (9th Dec) and day 4 (12th Dec).

Energetic Particles / Solar Radiation: No solar radiation storms are expected.

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Solar imagery

SDO AIA-193

This channel highlights the outer atmosphere of the Sun - called the corona - as well as hot flare plasma. Hot active regions, solar flares, and coronal mass ejections will appear bright here. The dark areas - called coronal holes - are places where very little radiation is emitted, yet are the main source of solar wind particles.

SDO AIA-304

This channel is especially good at showing areas where cooler dense plumes of plasma (filaments and prominences) are located above the visible surface of the Sun. Many of these features either can't be seen or appear as dark lines in the other channels. The bright areas show places where the plasma has a high density.

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