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

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

Southern Hemisphere

The Ovation Model is showing that the auroral oval is weak and close to background levels. No aurora sightings 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 speed was slightly elevated but slowly declined through the period. Its magnetic field was weak, with no significant negative deflections in the important north-south direction. Resultant geomagnetic activity was Quiet to Unsettled. 

Energetic Particles / Solar Radiation: Energetic particles were 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 region on the visible face of the sun. 

 Solar Wind / Geomagnetic Activity: There are currently no Earth-directed CMEs forecast. Slightly elevated solar winds are forecast to return to slow-ambient levels during day 1 (2nd Apr). Geomagnetic activity is expected to be mainly Quiet with isolated Unsettled intervals until day 4 (5th Apr) when the fast wind from another coronal hole may brush Earth giving a chance of Kp4 Active intervals. .

Energetic Particles / Solar Radiation: Energetic particles are 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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