Joint USAF/NOAA Report of Solar and Geophysical Activity 15 Apr 2007
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Product: Report of Solar-Geophysical Activity
Issued: 2007 Apr 15 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 105 Issued at 2200Z on 15 Apr 2007
IA. Analysis of Solar Active Regions and Activity from 14/2100Z to 15/2100Z: Solar activity was very low. No new regions were numbered today.
IB. Solar Activity Forecast: Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 14/2100Z to 15/2100Z: The geomagnetic field was mostly quiet. One period of unsettled conditions was observed at high latitudes at 14/2400 UTC.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominately quiet.
III. Event Probabilities 16 Apr-18 Apr
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
IV. Penticton 10.7 cm Flux
- Observed 15 Apr 069
- Predicted 16 Apr-18 Apr 070/070/070
- 90 Day Mean 15 Apr 075
V. Geomagnetic A Indices
- Observed Afr/Ap 14 Apr 003/004
- Estimated Afr/Ap 15 Apr 005/005
- Predicted Afr/Ap 16 Apr-18 Apr 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 16 Apr-18 Apr
A. Middle Latitudes
- Active 10/10/10
- Minor storm 05/05/05
- Major-severe storm 01/01/01
B. High Latitudes
- Active 15/15/15
- Minor storm 05/05/05
- Major-severe storm 01/01/01