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 enhancements are expected to the auroral oval are expected.

Southern Hemisphere

No significant enhancements are expected to the auroral oval.

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Forecast overview

Space Weather Forecast Headline: No significant activity.

Analysis of Space Weather Activity over past 24 hours

Solar Activity: Solar activity has been very low, with no sunspots on the sun's visible side. No Earth-directed coronal mass ejections (CMEs) were observed.

Solar Wind / Geomagnetic Activity: The solar wind speed measured remained slightly elevated at 420-480 km/s. Its magnetic field was weak, with no significant deflections in the important north-south direction. Resultant geomagnetic activity was Quiet to Unsettled.

Energetic Particles / Solar Radiation: Energetic particles were at background levels throughout with no solar radiation storms observed.

Four Day Space Weather Forecast Summary

Solar Activity:  Solar activity is expected to remain very low through this forecast period, with no sunspots on the visible disc and none expected to rotate around the eastern limb over the next four days.

Solar Wind / Geomagnetic Activity: No Earth-directed CMEs are currently forecast. Slightly elevated solar wind speeds are expected to return to slow levels through the forecast period, but still with occasional weak coronal hole influences possible. Corresponding geomagnetic activity is expected to be mostly Quiet with occasional Unsettled intervals possible.

Energetic Particles / Solar Radiation: No solar radiation storms are expected, with energetic particles forecast to remain at background levels.

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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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