Viewing archive of Saturday, 15 March 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Mar 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 74 Issued at 2200Z on 15 Mar 2025IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z
Solar activity has been at moderate levels for the past 24
hours. There are currently 13 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
days one, two, and three (16 Mar, 17 Mar, 18 Mar).
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 670 km/s at 15/1907Z. Total IMF reached 6
nT at 14/2157Z. The maximum southward component of Bz reached -6 nT at
14/2154Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 4950 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one, two, and three (16 Mar, 17
Mar, 18 Mar).
III. Event Probabilities 16 Mar to 18 Mar
| Class M | 45% | 45% | 45% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Mar 178 Predicted 16 Mar-18 Mar 180/178/175 90 Day Mean 15 Mar 188
V. Geomagnetic A Indices
Observed Afr/Ap 14 Mar 022/020 Estimated Afr/Ap 15 Mar 017/022 Predicted Afr/Ap 16 Mar-18 Mar 013/015-011/012-012/015
VI. Geomagnetic Activity Probabilities 16 Mar to 18 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 35% | 40% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 25% | 30% | 25% |
| Major-severe storm | 55% | 50% | 55% |
All times in UTC
Latest news
Wednesday, 5 March 2025
Coronal hole faces Earth
Sunday, 23 February 2025
X2.0 solar flare from sunspot region 4001
Friday, 7 February 2025
Coronal hole faces Earth, Minor G1 geomagnetic storm watch
Latest forum messages
Ask your obscure/"stupid" space weather questions. 343Coronal Hole 22 87Filaments and prominences 719IP cameras for sky surveillance 53Incoming & Unnumbered Active Regions 1629
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/14 | M1.1 |
| Last geomagnetic storm | 2025/03/14 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 125.9 -28.7 |
| Last 30 days | 139.6 -15 |