Viewing archive of Wednesday, 30 August 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Aug 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 242 Issued at 2200Z on 30 Aug 2023IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
29/2327Z from Region 3417 (S07E61). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low with a
slight chance for an M-class flare on days one, two, and three (31 Aug,
01 Sep, 02 Sep).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 358 km/s at 29/2209Z. Total IMF reached 7 nT at
30/1431Z. The maximum southward component of Bz reached -5 nT at
30/1237Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 187 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (31 Aug) and quiet to unsettled levels
on days two and three (01 Sep, 02 Sep).
III. Event Probabilities 31 Aug to 02 Sep
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Aug 139 Predicted 31 Aug-02 Sep 145/145/150 90 Day Mean 30 Aug 165
V. Geomagnetic A Indices
Observed Afr/Ap 29 Aug 007/005 Estimated Afr/Ap 30 Aug 006/006 Predicted Afr/Ap 31 Aug-02 Sep 006/005-010/010-008/010
VI. Geomagnetic Activity Probabilities 31 Aug to 02 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 25% | 25% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 20% | 20% |
| Major-severe storm | 15% | 20% | 20% |
All times in UTC
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