Viewing archive of Thursday, 10 July 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Jul 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 191 Issued at 2200Z on 10 Jul 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 days one, two, and three (11 Jul, 12 Jul,
13 Jul).
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 428 km/s at 09/2134Z. Total IMF reached 5 nT at
10/2058Z. The maximum southward component of Bz reached -3 nT at
10/0302Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 3114 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and three (11 Jul, 13 Jul) and quiet
to unsettled levels on day two (12 Jul).
III. Event Probabilities 11 Jul to 13 Jul
| Class M | 35% | 35% | 35% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Jul 129 Predicted 11 Jul-13 Jul 112/115/118 90 Day Mean 10 Jul 137
V. Geomagnetic A Indices
Observed Afr/Ap 09 Jul 008/ NA Estimated Afr/Ap 10 Jul 004/005 Predicted Afr/Ap 11 Jul-13 Jul 006/005-008/010-007/008
VI. Geomagnetic Activity Probabilities 11 Jul to 13 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 20% | 15% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 20% | 25% | 25% |
| Major-severe storm | 10% | 30% | 25% |
All times in UTC
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