Report of Solar-Geophysical Activity
Issued: 2005 Aug 30 2200 UTC
Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force.

Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 242 Issued at 2200Z on 30 Aug 2005 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity was at low levels. Region 806 (S17E37) was responsible for all recorded flare activity today. The largest event observed during the period was a C6/Sf flare occurring at 30/2155Z. This region remains a magnetically structured beta-gamma group with little change seen in sunspot coverage from yesterday.
Region 803 (N11E01) continued to show signs of decay and was quiescent during the period. No new regions were numbered today.
IB. Solar Activity Forecast: Solar activity is expected to be at low levels.
IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z:
The geomagnetic field was at predominantly quiet levels. The greater than 2 MeV electron flux at geosynchronous orbit reached high level again today.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on 31 August. Active to minor storming condition may be possible on 01 and 02 September due to coronal hole effects.
III. Event Probabilities 31 Aug-02 Sep
Class M 30/30/30
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 30 Aug 086
Predicted 31 Aug-02 Sep 085/080/080
90 Day Mean 30 Aug 094
V. Geomagnetic A Indices
Observed Afr/Ap 29 Aug 005/009
Estimated Afr/Ap 30 Aug 005/009
Predicted Afr/Ap 31 Aug-02 Sep 006/010-012/015-016/020 VI. Geomagnetic Activity Probabilities 31 Aug-02 Sep A. Middle Latitudes
Active 15/20/30
Minor storm 05/10/20
Major-severe storm 01/05/05
B. High Latitudes
Active 20/30/40
Minor storm 10/15/20
Major-severe storm 05/05/10