Viewing archive of Tuesday, 24 June 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Jun 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 175 Issued at 2200Z on 24 Jun 2025IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z 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 (25 Jun, 26 Jun,
27 Jun).
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 480 km/s at 24/1922Z. Total IMF reached 7
nT at 24/1600Z. The maximum southward component of Bz reached -6 nT at
24/1706Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1366 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to major storm levels on day one (25 Jun), unsettled
to minor storm levels on day two (26 Jun) and quiet to active levels on
day three (27 Jun).
III. Event Probabilities 25 Jun to 27 Jun
| Class M | 30% | 30% | 35% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 24 Jun 120 Predicted 25 Jun-27 Jun 120/125/130 90 Day Mean 24 Jun 146
V. Geomagnetic A Indices
Observed Afr/Ap 23 Jun 009/ 008 Estimated Afr/Ap 24 Jun 008/011 Predicted Afr/Ap 25 Jun-27 Jun 028/040-021/026-013/015
VI. Geomagnetic Activity Probabilities 25 Jun to 27 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 35% | 30% |
| Minor storm | 35% | 25% | 15% |
| Major-severe storm | 25% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 10% | 10% |
| Minor storm | 20% | 25% | 25% |
| Major-severe storm | 80% | 55% | 45% |
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 | |
|---|---|
| September 2025 | 129.8 -3.7 |
| October 2025 | 140.1 +10.3 |
| Last 30 days | 131.3 -1.2 |