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
There are currently no active notifications.
Aurora forecasts
Northern Hemisphere
Some slight auroral enhancements are possible over the next few days. However, any visibility is expected to be mainly restricted to the highest geomagnetic latitudes, with only a small chance of reaching as far south as northern parts of the UK Thursday night into Friday. Viewing opportunities will also be limited by the short hours of darkness at this time of year.
Southern Hemisphere
Some slight auroral enhancements are possible over the next few days. However, any visibility is expected to be mainly restricted to Antartica, with only a small chance of reaching the southernmost parts of New Zealand Thursday night into Friday.
Issued at: 20:46 (GMT) on Tue 23 Jun 2026
Forecast overview
Space Weather Forecast Headline: Chance of M-class flares
Analysis of Space Weather Activity over past 24 hours
Solar Activity: Very Low with all solar flares remaining below Common-class. There are seven regions on the Earth-facing disc, with the only significant growth observed in a new, yet to be numbered, region in the northeast disc. The largest region is a mature and stable bipolar group in the southeast disc.
No Earth-directed Coronal Mass Ejections (CMEs) have been observed in available imagery.
Solar Wind / Geomagnetic Activity: Slow wind conditions prevailed, perhaps showing a very weak CME from 22/1815 UTC. Solar wind speeds persisted at Background, 310–370 km/s. Total Interplanetary Magnetic Field was Weak throughout, but showed a marked jump at 22/1815 UTC with the north-south component variable in direction. Geomagnetic activity remained Quiet. (Kp1-2).
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 Very Low activity, but with a chance of rising to Moderate, mainly due to any potential activity from a region expected to soon move onto the southeast disc
Solar Wind / Geomagnetic Activity: There are no Earth-directed CMEs. Connections are expected to the fast winds of two coronal holes. The first, in the southern disc is expected to give a weak connection on later on day 2 and into day 3 (24-25 Jun). A stronger connection is then expected from a following trans-equatorial one, on day 3-4 (25-26 Jun), with solar winds likely becoming Elevated to Strong (500-600km/s. Geomagnetic activity is expected to be Quiet, with a spell of Unsettled with Active day 2-3 (24-25 Jun) and then Unsettled to Active with a chance of isolated G1 Minor Storm intervals day 3-4 (25-26 Jun)
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: 12:23 (GMT) on Tue 23 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: