Joint USAF/NOAA Report of Solar and Geophysical Activity 06 Apr 2007
Product: Report of Solar-Geophysical Activity
Issued: 2007 Apr 06 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 096 Issued at 2200Z on 06 Apr 2007
IA. Analysis of Solar Active Regions and Activity from 05/2100Z to 06/2100Z: Solar activity was at very low levels. The visible disk remains spotless. No new regions were numbered today.
IB. Solar Activity Forecast: Solar activity is expected to remain at very low levels.
IIA. Geophysical Activity Summary 05/2100Z to 06/2100Z: The geomagnetic field was at quiet levels. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels again today.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on 07 and 08 April. A recurrent coronal hole is expected to become geoeffective on 09 April with elevated conditions of minor storm to isolated severe storm levels possible.
III. Event Probabilities 07 Apr-09 Apr
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF green
IV. Penticton 10.7 cm Flux
- Observed 06 Apr 071
- Predicted 07 Apr-09 Apr 070/070/070
- 90 Day Mean 06 Apr 077
V. Geomagnetic A Indices
- Observed Afr/Ap 05 Apr 003/004
- Estimated Afr/Ap 06 Apr 003/004
- Predicted Afr/Ap 07 Apr-09 Apr 002/005-008/010-015/020
VI. Geomagnetic Activity Probabilities 07 Apr-09 Apr
A. Middle Latitudes
- Active 10/20/25
- Minor storm 01/05/15
- Major-severe storm 01/01/10
B. High Latitudes
- Active 15/20/35
- Minor storm 05/10/20
- Major-severe storm 01/05/15