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
The auroral oval is expected to be mainly at or near background levels in the coming days. Some brief, minor enhancements from solar fast winds or glancing slow Coronal Mass Ejections could lead to some high latitude sightings, however, limited hours of darkness at this time of year is likely to inhibit visibility of aurora.
Southern Hemisphere
The auroral oval is expected to be mainly at or near background levels in the coming days. Some brief, minor enhancements from solar fast winds or glancing slow Coronal Mass Ejections could lead to some high latitude sightings.
Issued at: 09:24 (GMT) on Mon 1 Jun 2026
Forecast overview
Space Weather Forecast Headline: Chance of isolated Moderate solar flares.
Analysis of Space Weather Activity over past 24 hours
Solar Activity: Solar activity is Low, with low level Common-class flares observed in the past 24 hours.
There are nine sunspot regions on the visible disc. These are magnetically simple with little change observed in the past 2 4 hourshours. A mature bipolar region in the northeast, the largest on the disc, has a large asymmetric lead spot, with small peripheral and trailing spots. Another mature bipolar region in the southwest has a similarly large leading spot, with further waxing/waning of small peripheral spots.
No significant Earth-directed Coronal Mass Ejections (CMEs) were observed in available imagery
Solar Wind / Geomagnetic Activity: Solar winds, as measured at L1 by ACE, indicated ongoing coronal hole fast wind influence. Winds were Slightly Elevated to Elevated, starting in the range 450-550km/s, and showed a steady decline through the period. The Interplanetary Magnetic Field was Weak. The north-south component varied with Weak levels, and a tendency for more prolonged negative readings Geomagnetic activity was Quiet to Unsettled (Kp 1-3).
Energetic Particles / Solar Radiation: Solar radiation levels were at normal background values.
Four-Day Space Weather Forecast Summary
Solar Activity: Generally Low with a chance of isolated Moderate solar flares.
Solar Wind / Geomagnetic Activity: No significant Earth-directed CMEs currently feature in the forecast.
Solar winds look set to return to background levels, before the next more substantial stream of faster wind becomes geoeffective, probably during Day 3 (03 June) and through Day 4 (04 June).
Generally Quiet to Unsettled geomagnetic activity is expected, with a chance of isolated Active periods. The higher geomagnetic activity is more likely towards the end of the period, in response to faster streams of solar wind.
Energetic Particles / Solar Radiation: Solar Radiation counts are at normal background levels and currently expected to remain so through the period.
Issued at: 12:14 (GMT) on Mon 1 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: