Viewing archive of Friday, 11 July 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Jul 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 192 Issued at 2200Z on 11 Jul 2025IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 6 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 (12 Jul, 13 Jul,
14 Jul).
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 523 km/s at 11/1257Z. Total IMF reached 13
nT at 11/1005Z. The maximum southward component of Bz reached -11 nT at
11/0923Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 2332 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (12 Jul), quiet to minor
storm levels on day two (13 Jul) and quiet to unsettled levels on day
three (14 Jul).
III. Event Probabilities 12 Jul to 14 Jul
| Class M | 50% | 50% | 50% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Jul 132 Predicted 12 Jul-14 Jul 135/135/135 90 Day Mean 11 Jul 137
V. Geomagnetic A Indices
Observed Afr/Ap 10 Jul 006/006 Estimated Afr/Ap 11 Jul 015/018 Predicted Afr/Ap 12 Jul-14 Jul 011/012-011/015-010/010
VI. Geomagnetic Activity Probabilities 12 Jul to 14 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 40% | 30% |
| Minor storm | 15% | 30% | 10% |
| Major-severe storm | 01% | 10% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 15% |
| Minor storm | 30% | 25% | 25% |
| Major-severe storm | 45% | 65% | 40% |
All times in UTC
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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 | |
|---|---|
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| October 2025 | 140.1 +10.3 |
| Last 30 days | 131.3 -1.2 |