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.
Space weather notifications
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Aurora forecasts
Northern Hemisphere
Geomagnetic activity is expected to be largely at Background levels, with only limited visibility . This will be further restricted at this time of year due to the limited hours of darkness.
Southern Hemisphere
Geomagnetic activity is expected to be largely at Background levels, with only limited visibility and remaining restricted to the Antarctic continent
Issued at: 08:40 (GMT) on Mon 15 Jun 2026
Forecast overview
Space Weather Forecast Headline: No significant activity
Analysis of Space Weather Activity over past 24 hours
Solar Activity: Low with only Common class flares observed. There are four small and simple sunspots on the Earth-facing disc, however these are all magnetically simple and relatively inactive.
No Earth-directed Coronal Mass Ejections (CMEs) have been observed.
Solar Wind / Geomagnetic Activity: Solar wind parameters have been indicative of a declining fast winds. Solar winds were initially elevated at 520km/s, but declined to Slightly Elevated through the period, currently around 440km/s. Interplanetary Magnetic Field (IMF), Bt, was generally Weak. The north-south component, Bz, was weak and variable, but favoured a negative (southward) orientation. Geomagnetic Activity was Quiet (Kp 1-2).
Energetic Particles / Solar Radiation: The count rate of energetic particles (high energy protons) was at background with no solar radiation storms observed.
Four-Day Space Weather Forecast Summary
Solar Activity: Low or very low activity is forecast with only a slight chance of rising to Moderate due to isolated Moderate-class flares.
Solar Wind / Geomagnetic Activity: There is a small chance of a glancing CME (Coronal mas ejection) arrival on Day 1 (15 Jun), however a significant impact is unlikely. Otherwise, the ongoing fast wind is expected to only gradually ease, with solar winds fading to Background Day 1 or Day 2 (15-16 Jun). The next fast wind enhancement from CH67/+ is expected on Day 3 (17 Jun), with solar winds likely becoming Slightly Elevated. Overall geomagnetic activity is expected to be mostly Quiet (Kp 0-2), with isolated Unsettled (Kp3) intervals. There is a chance of a few Active (Kp 4) spells, and only a very slight chance of G1 Minor storms (Kp5), most likely associated with the low probability of a glancing CME impact on Day 1 and the onset of fast winds on Day 3.
Energetic Particles / Solar Radiation: The count rate of energetic particles (high energy protons) is forecast to persist at Background with no solar radiation storms occurring.
Issued at: 00:18 (GMT) on Mon 15 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: