Report of Solar-Geophysical Activity
Issued: 2005 Sep 21 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 264 Issued at 2200Z on 21 Sep 2005 IA. Analysis of Solar Active Regions and Activity from 20/2100Z to 21/2100Z: Solar activity was very low. Region 810 (N08E21) is the only region with spots on the visible disk.
IB. Solar Activity Forecast: Solar activity is expected to be very low to low.
IIA. Geophysical Activity Summary 20/2100Z to 21/2100Z:
The geomagnetic field was quiet to unsettled. The greater then 2 MeV electron flux at geosynchronous orbit was high again today.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled.
III. Event Probabilities 22 Sep-24 Sep
Class M 10/10/10
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 21 Sep 086
Predicted 22 Sep-24 Sep 085/080/080
90 Day Mean 21 Sep 093
V. Geomagnetic A Indices
Observed Afr/Ap 20 Sep 003/006
Estimated Afr/Ap 21 Sep 003/012
Predicted Afr/Ap 22 Sep-24 Sep 005/010-005/010-005/010 VI. Geomagnetic Activity Probabilities 22 Sep-24 Sep A. Middle Latitudes
Active 10/10/10
Minor storm 05/05/05
Major-severe storm 01/01/01
B. High Latitudes
Active 20/20/20
Minor storm 10/10/10
Major-severe storm 05/05/05