Viewing archive of Saturday, 10 May 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 May 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 130 Issued at 2200Z on 10 May 2025IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 5 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 day one (11 May) and likely to be low on
days two and three (12 May, 13 May).
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 554 km/s at 10/1225Z. Total IMF reached 9
nT at 09/2126Z. The maximum southward component of Bz reached -9 nT at
09/2126Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1326 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and three (11 May, 13 May)
and quiet to unsettled levels on day two (12 May).
III. Event Probabilities 11 May to 13 May
| Class M | 40% | 05% | 05% |
| Class X | 05% | 01% | 01% |
| Proton | 05% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 10 May 134 Predicted 11 May-13 May 130/125/120 90 Day Mean 10 May 165
V. Geomagnetic A Indices
Observed Afr/Ap 09 May 011/011 Estimated Afr/Ap 10 May 012/015 Predicted Afr/Ap 11 May-13 May 010/012-007/008-010/012
VI. Geomagnetic Activity Probabilities 11 May to 13 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 40% |
| Minor storm | 15% | 05% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 10% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 50% | 25% | 50% |
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
Coronal Hole 85 2CMEs from 2025/10/03 47Unspecified geomagnetic activity 3204Incoming & Unnumbered Active Regions 2108MODELO MAGNETOSFERA 3
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 |