Viewing archive of Thursday, 12 June 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Jun 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 163 Issued at 2200Z on 12 Jun 2025IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 8 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (13 Jun, 14 Jun,
15 Jun).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic
field has been at unsettled to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 513 km/s at 12/0511Z. Total IMF
reached 17 nT at 11/2230Z. The maximum southward component of Bz reached
-12 nT at 12/1857Z. Electrons greater than 2 MeV at geosynchronous
orbit reached a peak level of 441 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (13 Jun), unsettled to major
storm levels on day two (14 Jun) and unsettled to minor storm levels on
day three (15 Jun).
III. Event Probabilities 13 Jun to 15 Jun
| Class M | 40% | 40% | 40% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Jun 142 Predicted 13 Jun-15 Jun 140/140/135 90 Day Mean 12 Jun 150
V. Geomagnetic A Indices
Observed Afr/Ap 11 Jun 013/018 Estimated Afr/Ap 12 Jun 019/024 Predicted Afr/Ap 13 Jun-15 Jun 011/015-024/032-018/025
VI. Geomagnetic Activity Probabilities 13 Jun to 15 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 30% | 40% |
| Minor storm | 20% | 40% | 25% |
| Major-severe storm | 05% | 25% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 10% |
| Minor storm | 30% | 20% | 25% |
| Major-severe storm | 55% | 75% | 65% |
All times in UTC
Latest news
Thursday, 11 September 2025
Coronal hole faces Earth
Sunday, 31 August 2025
M2.7 solar flare with earth-directed CME!
Tuesday, 5 August 2025
M4.4 solar flare from sunspot region 4168
Latest forum messages
Comet C/2025 A6 (Lemmon) 72CMEs from 2025/10/03 48Coronal Hole 85 2Unspecified geomagnetic activity 3204Incoming & Unnumbered Active Regions 2108
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/06/19 | X1.9 |
| Last M-flare | 2025/10/03 | M1.2 |
| Last geomagnetic storm | 2025/10/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2025 | 129.8 -3.7 |
| October 2025 | 140.1 +10.3 |
| Last 30 days | 131.3 -1.2 |