Viewing archive of Friday, 25 October 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Oct 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 299 Issued at 2200Z on 25 Oct 2024IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
25/0733Z from Region 3873 (S10E63). There are currently 11 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(26 Oct, 27 Oct, 28 Oct).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 414 km/s at 25/0735Z. Total IMF reached 7 nT at
25/1943Z. The maximum southward component of Bz reached -3 nT at
25/0345Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 139 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (26 Oct), quiet levels
on day two (27 Oct) and quiet to unsettled levels on day three (28 Oct).
Protons have a slight chance of crossing threshold on days one, two, and
three (26 Oct, 27 Oct, 28 Oct).
III. Event Probabilities 26 Oct to 28 Oct
| Class M | 70% | 70% | 70% |
| Class X | 15% | 15% | 15% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Oct 209 Predicted 26 Oct-28 Oct 210/215/220 90 Day Mean 25 Oct 220
V. Geomagnetic A Indices
Observed Afr/Ap 24 Oct 010/012 Estimated Afr/Ap 25 Oct 006/007 Predicted Afr/Ap 26 Oct-28 Oct 015/018-007/007-009/008
VI. Geomagnetic Activity Probabilities 26 Oct to 28 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 20% | 25% |
| Minor storm | 15% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 55% | 30% | 30% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/10/26 | X1.8 |
| Last M-flare | 2024/10/29 | M1.1 |
| Last geomagnetic storm | 2024/10/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2024 | 141.4 -74.1 |
| October 2024 | 154.9 +13.5 |
| Last 30 days | 154.9 +5.4 |