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

Latest Ovation Model for the northern hemisphere: the Auroral oval is weak and close to background levels, enhanced geomagnetic activity is not expected.

Southern Hemisphere

Latest Ovation Model for the southern hemisphere: the Auroral oval is weak and close to background levels, enhanced geomagnetic activity is not expected.

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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, with no sunspot regions evident on the visible side of the Sun. No Earth-directed coronal mass ejections (CMEs) were observed.

Solar Wind / Geomagnetic Activity: Solar wind speeds have been slow through the period. Total magnetic field strength was weak, with no significant negative deflections in the important north-south direction. Resultant geomagnetic activity was Quiet.

Energetic Particles / Solar Radiation: The high energy proton flux was at background levels throughout with no radiation storms in the near-Earth space environment.

Four Day Space Weather Forecast Summary

Solar Activity: Solar activity is forecast to remain very low, with no sunspots on the visible disc. A sunspot region may rotate into view from the far side at the end of the period but it is not yet possible to identify its magnetic classification.

Solar Wind / Geomagnetic Activity: There are currently no Earth directed Coronal Mass Ejections (CME) in the forecast. Solar winds are expected to remain mainly slow, perhaps reaching slightly elevated levels at times due to weak coronal hole effects. Geomagnetic activity is forecast to be mainly Quiet with slight chance of Unsettled periods.

Energetic Particles / Solar Radiation: The high energy proton flux is forecast to remain at background levels, with no solar radiation storms 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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