| 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: 21:02 (GMT) on Sun 7 Jun 2026
Forecast overview
Space Weather Forecast Headline: Chance of Strong geomagnetic storm G3 Monday 08 June (UTC). Slight chance Minor solar radiation storm S1.
Analysis of Space Weather Activity over past 24 hours
Solar Activity: Solar activity has returned to Low levels over the past 24 hours, with occasional Common-class flares.
There are eight sunspot regions on the facing side of the Sun, evenly-spaced across the full span of the disc, with many with apparently of similar complexity. The most-changed regions on the disc include AR4456 in the northwest, which has shown decay in recent imagery, especially in its intermediate portion. AR4462 in the northeast has also shown slight decay in its intermediate and trailing spots. Finally, AR4464 in the southeast continues to show steady development, particularly in the lead and intermediate portions, giving increased overall areal size. The remaining regions on the disc were generally simpler and were either stable or in slight decay.
No Earth directed CMEs (Coronal Mass Ejections) were observed in available imagery in the period.
Solar Wind / Geomagnetic Activity: Solar winds have been mainly in the range 500-600km/s, with a slow, rather erratic decline in the wake of recent CME and coronal hole-sourced fast wind influence. The number of particles in the solar wind and their associated magnetic field were both unremarkable - near their long-term averages. The net result of the above solar wind measures was for Quiet to Unsettled geomagnetic activity.
Energetic Particles / Solar Radiation: No solar radiation storms were observed, however there remains a small proton flux enhancement in the wake of the recent Moderate-class flare.
Four-Day Space Weather Forecast Summary
Solar Activity: Solar activity is forecast to be Low to Moderate, with Likely isolated Moderate-class flares and a Slight Chance of an isolated Strong-class flare.
Solar Wind / Geomagnetic Activity: The main driver of geomagnetic activity in the forecast period is expected to be the sole CME en route: that associated with the Moderate-class X-ray flare on 06 June. This is expected to arrive early on day 1 (08 June) and bring a chance of Strong geomagnetic storm G3 conditions, probably easing G1-G2 (Minor-Moderate) on Tuesday 09 June before a resumption of mainly Quiet geomagnetic activity into days 3 and 4 (10 and 11 June). Later on day 4 the next main coronal hole feature may become geoeffective, bringing an increase in geomagnetic activity.
Energetic Particles / Solar Radiation: Proton flux saw a very slight rise as a result of the large X-ray flare on 06 June, but has stayed well below the S1 Minor Radiation Storm level. This could increase further as any associated CME arrives on on day 1 (08 June), bringing a chance for a brief period of S1 Minor Solar Radiation Storms, before quickly easing after the CME arrival occurs. There is also a slight chance of further enhancements if any further notable flares occur.
Issued at: 00:16 (GMT) on Mon 8 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: