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Solar activity report
Report of Solar-Geophysical Activity 2023 Oct 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 274 Issued at 2200Z on 01 Oct 2023IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 01-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M2 event observed at
01/0132Z from Region 3452 (N11E47). There are currently 8 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 (02 Oct, 03 Oct,
04 Oct).
IIA. Geophysical Activity Summary 30-2100Z to 01-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 452 km/s at 01/2031Z. Total IMF reached 6
nT at 01/0852Z. The maximum southward component of Bz reached -6 nT at
01/0852Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 454 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and two (02 Oct, 03 Oct) and
quiet to unsettled levels on day three (04 Oct).
III. Event Probabilities 02 Oct to 04 Oct
| Class M | 45% | 45% | 45% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 01 Oct 161 Predicted 02 Oct-04 Oct 162/162/162 90 Day Mean 01 Oct 162
V. Geomagnetic A Indices
Observed Afr/Ap 30 Sep 011/014 Estimated Afr/Ap 01 Oct 009/009 Predicted Afr/Ap 02 Oct-04 Oct 012/015-011/012-008/008
VI. Geomagnetic Activity Probabilities 02 Oct to 04 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 30% | 20% |
| Minor storm | 20% | 15% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 35% | 30% | 20% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/11/06 | X2.3 |
| Last M-flare | 2024/11/07 | M2.3 |
| Last geomagnetic storm | 2024/10/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 194.5 +28.1 |
| Last 30 days | 160.2 +7.5 |