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
There is a chance of some limited auroral enhancements during the weekend (UTC) onwards, with faster solar winds expected to arrive at Earth. Any aurora is likely to be limited to higher latitudes, with a chance of visibility from the north of Scotland and similar magnetic latitudes.
Southern Hemisphere
There is a chance of some limited auroral enhancements during the weekend (UTC) onwards, with faster solar winds expected to arrive at Earth. Any aurora is likely to be limited to higher latitudes, with a chance of visibility from the far south of New Zealand and similar magnetic latitudes.
Issued at: 08:36 (GMT) on Sat 7 Nov 2026
Forecast overview
Space Weather Forecast Headline: Increased chance of M-class solar flares throughout. Chance of G1/Minor Geomagnetic Storms with fast solar wind onset.
Analysis of Space Weather Activity over past 24 hours
Solar Activity: Solar activity returned to Low levels. There are currently six sunspot regions on the visible disc. The most significant and magnetically complex region on the disc remains AR4566 in the southeast, with significant magnetic complexity and mixed polarity maintained within its central portion. Remaining regions are small and simple at the present time.
No Earth directed CMEs were observed in available coronagraph imagery.
Solar Wind / Geomagnetic Activity: Solar winds showed an erratic rising trend. Solar wind speeds background to start with a minimum of 305km/s rose erratically through the period to reach slightly elevated levels, peaking at 435km/s. The Interplanetary Magnetic Field, Bt, was initially weak, but increased into the second half of the period to reach moderate levels at times. The important north-south component, Bz, varied moderately. Resultant Geomagnetic activity was Quiet to Unsettled (Kp1-3).
Energetic Particles / Solar Radiation: No solar radiation storms were observed.
Four-Day Space Weather Forecast Summary
Solar Activity: Overall Moderate activity is expected, with a likelihood of further moderate solar flares from sunspot region AR4566, and a slight chance of isolated strong solar flares.
Solar Wind / Geomagnetic Activity: With no Earth directed CMEs currently expected the geomagnetic forecast is dominated by the expected onset of fast solar winds associated with a large coronal hole. Overall solar winds are expected to become strong through Day 1 and into Day 2 (07-08 Nov), likely reaching 550-650 km/s, and remain generally Elevated through Days 3-4 (09-10 Nov) as values are expected to slowly decline.
Geomagnetic activity is expected to be mostly Quiet to Active (Kp 2-4) with a chance of G1/Minor Storm (Kp 5) intervals, declining into the period.
Energetic Particles / Solar Radiation: Solar radiation is likely to remain at background levels, though there is a slight but rising chance of exceeding the S1/Minor Radiation Storm threshold.
Issued at: 01:01 (GMT) on Sat 7 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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