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

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Aurora forecasts

Northern Hemisphere

The Ovation Model is showing that the auroral oval is weak and close to background levels. No significant aurora sightings are anticipated over the following days.

Southern Hemisphere

The Ovation Model is showing that the auroral oval is weak and close to background levels. No significant aurora sightings are anticipated over the following days.

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Forecast overview

Space Weather Forecast Headline: No significant space weather expected.

Analysis of Space Weather Activity over past 24 hours

Solar Activity:  Solar activity remained very low with no significant flares observed. There is currently one small and magnetically simple sunspot region in the sun's northeast quadrant. No Earth-directed coronal mass ejections (CMEs) were observed.

Solar Wind / Geomagnetic Activity: The solar wind saw mostly slightly elevated speeds, between 400 and 450 km/s, but with occasional spells at slow levels 03/0900-1200 UTC. Its magnetic field was weak, with no significant negative deflections in the important north-south direction. Resultant geomagnetic activity was predominantly Quiet, until becoming Unsettled 03/1800-2100 UTC, and with one Active interval 03/2100-2400 UTC. 

Energetic Particles / Solar Radiation: The number of energetic particles (high energy proton flux) was at background levels, 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 currently one small and magnetically simple sunspot on the visible face of the Sun. No new sunspot regions are expected to move in to view.

Solar Wind / Geomagnetic Activity: There are currently no Earth-directed CMEs forecast. Solar winds are expected to continue slightly elevated at times under weak coronal hole influences. Geomagnetic activity will be mainly Quiet with isolated Unsettled spells, and just a slight chance of any Active intervals.

Energetic Particles / Solar Radiation: The number of energetic particles (high energy proton flux) is expected to remain at background levels throughout with no solar radiation storms forecast.

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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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