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

Aurora activity is expected to be at predominantly background levels, with aurora sightings unlikely for the northern hemisphere.

Southern Hemisphere

Aurora activity is expected to be at predominantly background levels, with aurora sightings unlikely for the southern hemisphere until the 17th when there is a slight chance of aurora at high latitudes.

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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 over the last 24 hours. Two sunspot regions remain on the visible disc, both weak and magnetically simple. No significant Earth directed Coronal Mass Ejections (CMEs) were observed in imagery over the past 24 hours.

Solar Wind / Geomagnetic Activity: The slightly elevated solar wind declined to Slow over the period with a weak magnetic field. The important north-south component was either weakly negative or positive. Geomagnetic activity remained Quiet throughout.

Energetic Particles / Solar Radiation: No solar radiation storms were observed in the near-Earth space environment.

Four-Day Space Weather Forecast Summary

Solar Activity: Solar activity is expected to be low or very low. A couple of new sunspot regions are likely to rotate onto the visible disc during days 3 and 4 (16th and 17th).

Solar Wind / Geomagnetic Activity: The solar wind is likely to remain Slow until day 3 (16th) when an enhancement is possible, although this will probably occur late on day 4 (17th) and become Elevated (around 500-550 km/s). Geomagnetic activity predominantly Quiet, with an increasing chance of Unsettled intervals, mainly on days 3 and 4, and a possible Active interval late on day 4.

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

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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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