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.
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Aurora forecasts
Northern Hemisphere
Some slight auroral enhancements are possible in the next 24 hours. However, any visibility is expected to be mainly restricted to higher geomagnetic latitudes, with a small chance of reaching as far south as northern parts of the UK overnight on Friday (UTC). Viewing opportunities will also be limited by the short hours of darkness at this time of year.
Southern Hemisphere
Slight auroral enhancements are possible in the next 24 hours. However, any visibility is expected to be mainly restricted to Antarctica, with only a small chance of reaching the southernmost parts of New Zealand Friday night (UTC)
Issued at: 07:16 (GMT) on Fri 26 Jun 2026
Forecast overview
Space Weather Forecast Headline: Low to Moderate solar activity.
Analysis of Space Weather Activity over past 24 hours
Solar Activity: Low with occasional Common-class flares. The strongest of these was from s a mature bipolar group and the largest of the five sunspot regions in the east solar disc. Despite its size and some slight complexity within its intermediate the region this has remained relatively inactive aside from the occasional Common-class flare. A further small region in the south-centre disc is also of interest, despite apparent simplicity due to lines of material, or filaments, that lie across the sunspot. Another region rapidly emerged in the northeast during this period, but remains a simple bipolar group aside from its non-typical north-south orientation.
No Earth-directed Coronal mass ejections (CMEs) have been observed in available imagery. However an eruption has been to the south of the small region in the south disc, but imagery is being waited for in order to assess for any Earth-directed component.
Solar Wind / Geomagnetic Activity: Solar winds show an ongoing connection to the fast winds of a coronal hole. Solar wind speeds were Strong, around 600-700 km/s. Total Interplanetary Magnetic Field was Weak. The north-south component, was variable and also Weak. Geomagnetic activity was Quiet to Unsettled (Kp1-3).
Energetic Particles / Solar Radiation: The count rate of energetic particles (high energy protons) has persisted at Background with no Solar Radiation Storms occurring.
Four-Day Space Weather Forecast Summary
Solar Activity: Low to Moderate activity is expected with isolated M-flares likely given the large region of in the east, along with further developing regions on the disc.
Solar Wind / Geomagnetic Activity: There are no Earth-directed CMEs, with imagery awaited for from the eruption late on 26 Jun. Ongoing fast winds from a coronal hole are expected to gradually ease toward Background by day 4 (30 Jun) with no other enhancements anticipated. Geomagnetic activity is expected to be Quiet to Unsettled with a decreasing chance of Active intervals.
Energetic Particles / Solar Radiation: The count rate of energetic particles (high energy protons) is expected to persist at Background with no Solar Radiation Storms occurring.
Issued at: 00:27 (GMT) on Sat 27 Jun 2026
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.
Issued at:
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.
Issued at: