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
Coronal hole fast winds are now easing, with auroral activity becoming confined to high latitudes on 02 Nov (UTC). The auroral oval is expected to be near background levels on 03-04 Nov (UTC). Weak coronal hole fast winds may give further high latitude enhancement during 05 Nov (UTC), with a slight chance of sightings from the north of Scotland and similar magnetic latitudes.
Southern Hemisphere
Coronal hole fast winds are now easing, with auroral activity becoming confined to high latitudes on 02 Nov (UTC). The auroral oval is expected to be near background levels on 03-04 Nov (UTC). Weak coronal hole fast winds may give further high latitude enhancement during 05 Nov (UTC), with a slight chance of sightings from the far south of New Zealand and similar magnetic latitudes.
Issued at: 01:59 (GMT) on Mon 2 Nov 2026
Forecast overview
Space Weather Forecast Headline: Slight chance of G1/Minor Storms Day 4 (05 Nov).
Analysis of Space Weather Activity over past 24 hours
Solar Activity: Solar activity has been Low with one Common-class flare. There are now two small sunspot regions on the visible disc, with a third starting to appear on the southeast limb. One is a stable and small unipolar spot. The other is small and has started to fade a little in recent hours.
No Earth-directed Coronal Mass Ejections (CMEs) were observed in available imagery.
Solar Wind / Geomagnetic Activity: Solar winds showed a coronal hole fast wind. Wind speeds were initially elevated, mainly between 500-600km/s, easing a little to slightly elevated, between 440-510km/s. The Interplanetary Magnetic Field initially had some moderate peaks but soon became weak. The north-south component varied weakly, while favouring a southward orientation. Geomagnetic activity was Active to G1/Minor Storm (Kp4-5) at first, easing to Quiet to Unsettled (Kp2-3).
Energetic Particles / Solar Radiation: No solar radiation storms were observed with the count rate of energetic particles persisting at background levels.
Four-Day Space Weather Forecast Summary
Solar Activity: Very Low or Low activity is expected to continue given the lack of size and complexity of the sunspots currently on the Earth-facing disc.
Solar Wind / Geomagnetic Activity: No Earth directed CMEs feature in the forecast. Earth is currently in a waning coronal hole fast wind. Wind speeds are expected to continue easing towards background levels through Days 1 and 2 (02-03 Nov). Another fast wind may bring slightly elevated wind speeds, but significant impacts from it are unlikely. Any enhancement from this feature is most likely on Day 4 (05 Nov), but with low confidence in timing.
Mostly Quiet to Unsettled conditions are expected for much of the period, with a chance of isolated Active intervals on Day 1 due to lingering fast wind effects. Conditions may become Unsettled to Active, with a slight chance of G1/Minor Storm intervals, during Day 4 with any weak fast wind influence from CH08.
Energetic Particles / Solar Radiation: No solar radiation storms are forecast with the count rate of energetic particles expected to persist at background levels.
Issued at: 00:32 (GMT) on Mon 2 Nov 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.
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