| No. | Type | Alerts | Warnings | Watches |
|---|---|---|---|---|
| 1 | Geomagnetic Storm Watch |
G3:
02:00 (GMT) on Mon 8 Jun 2026 to 23:59 (GMT) on Mon 8 Jun 2026 |
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
Aurora forecasts
Northern Hemisphere
The arrival of a CME is expected from mid to late morning on 08 June (UTC). This is likely to enhance the aurora across Canada and northern USA, and while activity may be easing by the evening across Europe, there will be still be the chance of some visible aurora to northernmost geomagnetic latitudes, before easing to background on 09 June. Although this is likely to be further limited by the reduced hours of darkness at this time of year.
Southern Hemisphere
The arrival of a CME is expected from mid to late morning on 08 June (UTC). This is likely to enhance the aurora to give some views from southern New Zealand and possibly Tasmania, before easing to background on 09 June
Issued at: 06:48 (GMT) on Sun 7 Jun 2026
Forecast overview
Space Weather Forecast Headline: G1 to G2 Minor to Moderate Storms with chance G3 Strong Storms on day 2 (08 Jun) due to arrival of CME from 06 Jun. Isolated Moderate-class flares likely.
Analysis of Space Weather Activity over past 24 hours
Solar Activity: Moderate with a single Moderate-class flares observed from a small and simple region in the southeast. There are eight relatively small sunspot regions on the disc. The most complex and developmental region is in the northwest, and has seen a number of small mixed magnetic polarity spots emerge and coalesce, resulting in a complex magnetic structure. Ongoing growth has also been observed in a region in the northeast, however this maintains a simpler bipolar structure. The previously active region in the northwest continues to show a simplifying trend, with the decay of its small spots that surround its main positive polarity spot. The other regions are either showing slight decay or have stabilised.
The Moderate flare produced a significant Coronal Mass Ejection (CME). While the bulk of the material is passing south and east of Earth, the CME is both relatively fast and wide, giving it an Earth-directed component. This is expected to arrive at Earth early on day 2 (08 Jun).
Solar Wind / Geomagnetic Activity: Recent CME and coronal hole sourced fast wind influence only erratically eased. Solar wind speeds declined from being Strong at 600-650km/s to be mainly Elevated at 550-600 km/s. Interplanetary magnetic field was Weak, with the north-south component (Bz) also Weak and variable in direction. Geomagnetic activity was Unsettled to Active (Kp3-4) until 08/1500 UTC, then became Quiet (Kp2).
Energetic Particles / Solar Radiation: The count rate of energetic particles (high energy protons) increased in response to the Moderate flare, however this remained well below the S1 Minor Radiation Storm level.
Four-Day Space Weather Forecast Summary
Solar Activity: Low to Moderate activity is expected with an ongoing likelihood of isolated Moderate class flares. There is a slight chance of a Strong (X-class) flare, mainly from the developing and more complex region in the northwest.
Solar Wind / Geomagnetic Activity: The CME from the Moderate flare on 06 Jun is expected to arrive early on day 2 (08 Jun). Current Elevated Solar winds are expected to be easing to be Slightly Elevated ahead of this arrival, but likely become Strong again when it occurs. No other notable enhancements are currently forecast, however the CME influence could continue into day 3 (09 Jun), before easing. Mainly Quiet geomagnetic activity at first is expected to increase to be G1-G2 Minor to Moderate storm with a chance of G3 Strong Storms with the CME arrival. There is a chance that G1-G2 Minor to Moderate storm activity persists into day 3, before easing back to be mainly Quiet to Unsettled by day 4 (10 Jun).
Energetic Particles / Solar Radiation: The count rate of energetic particles (high energy protons) has a chance of rising further on day 1-2 (07-08 Jun) as the particles are swept towards Earth with the CME. This brings a chance of a brief S1 Minor Radiation Storm, before count rates fall back towards Background shortly after the CME has arrived. There is also a slight chance of further enhancements if any more significant solar flares occur.
Issued at: 00:28 (GMT) on Sun 7 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: