Joint USAF/NOAA Report of Solar and Geophysical Activity 03 Apr 2007
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Product: Report of Solar-Geophysical Activity
Issued: 2007 Apr 03 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 093 Issued at 2200Z on 03 Apr 2007
IA. Analysis of Solar Active Regions and Activity from 02/2100Z to 03/2100Z: Solar activity has been very low. Region 950 (S12W32) was designated today.
IB. Solar Activity Forecast: Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 02/2100Z to 03/2100Z: The geomagnetic field was active with periods of minor storming due to a recurrent coronal hole high speed stream. 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 unsettled tomorrow (April 4) and quiet on April 5 & 6.
III. Event Probabilities 04 Apr-06 Apr
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
IV. Penticton 10.7 cm Flux
- Observed 03 Apr 071
- Predicted 04 Apr-06 Apr 072/072/072
- 90 Day Mean 03 Apr 077
V. Geomagnetic A Indices
- Observed Afr/Ap 02 Apr 016/024
- Estimated Afr/Ap 03 Apr 010/010
- Predicted Afr/Ap 04 Apr-06 Apr 008/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 04 Apr-06 Apr
A. Middle Latitudes
- Active 15/15/15
- Minor storm 10/10/10
- Major-severe storm 01/01/01
B. High Latitudes
- Active 25/20/20
- Minor storm 20/15/15
- Major-severe storm 05/05/05