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Solar activity report
Report of Solar-Geophysical Activity 2024 Aug 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 218 Issued at 2200Z on 05 Aug 2024IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a X1 event observed at
05/1340Z from Region 3767 (S09W92). There are currently 8 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be moderate
with a chance for X-class flares on days one, two, and three (06 Aug, 07
Aug, 08 Aug).
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 667 km/s at 05/0949Z. Total IMF reached 21
nT at 05/0002Z. The maximum southward component of Bz reached -10 nT at
05/0215Z. Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 3 pfu at 05/1945Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (06 Aug, 07 Aug)
and quiet levels on day three (08 Aug). Protons have a slight chance of
crossing threshold on days one, two, and three (06 Aug, 07 Aug, 08 Aug).
III. Event Probabilities 06 Aug to 08 Aug
| Class M | 75% | 75% | 75% |
| Class X | 25% | 25% | 25% |
| Proton | 20% | 20% | 20% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 05 Aug 247 Predicted 06 Aug-08 Aug 244/235/240 90 Day Mean 05 Aug 195
V. Geomagnetic A Indices
Observed Afr/Ap 04 Aug 028/050 Estimated Afr/Ap 05 Aug 009/010 Predicted Afr/Ap 06 Aug-08 Aug 007/010-007/008-005/005
VI. Geomagnetic Activity Probabilities 06 Aug to 08 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 25% | 15% | 15% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/09/14 | X4.54 |
| Last M-flare | 2024/09/14 | M3.0 |
| Last geomagnetic storm | 2024/09/17 | Kp8- (G4) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| August 2024 | 215.5 +19 |
| September 2024 | 154.3 -61.2 |
| Last 30 days | 161.6 -51.3 |