Joint USAF/NOAA Report of Solar and Geophysical Activity 30 Jun 2007
Product: Report of Solar-Geophysical Activity
Issued: 2007 Jun 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 181 Issued at 2200Z on 30 Jun 2007
IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity was very low. Region 961 (S12E09) has developed in size and complexity, but has not produced any significant activity. Region 962 (S10E37) has decayed into a simple Alpha-class spot group.
IB. Solar Activity Forecast: Solar activity is expected to be very low. There is a slight chance of an isolated C-class flare from Region 961.
IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field was quiet to unsettled. Solar wind speed has been steadily decreasing, but remains slightly elevated due to the coronal hole high speed stream.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled for the next three days (01 – 03 July).
III. Event Probabilities 01 Jul-03 Jul
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
IV. Penticton 10.7 cm Flux
- Observed 30 Jun 074
- Predicted 01 Jul-03 Jul 075/075/075
- 90 Day Mean 30 Jun 074
V. Geomagnetic A Indices
- Observed Afr/Ap 29 Jun 005/013
- Estimated Afr/Ap 30 Jun 005/007
- Predicted Afr/Ap 01 Jul-03 Jul 005/005-005/005-005/008
VI. Geomagnetic Activity Probabilities 01 Jul-03 Jul
A. Middle Latitudes
- Active 15/15/15
- Minor storm 05/05/05
- Major-severe storm 01/01/01
B. High Latitudes
- Active 20/20/20
- Minor storm 05/05/10
- Major-severe storm 01/01/01