Joint USAF/NOAA Report of Solar and Geophysical Activity 02 Apr 2007
Product: Report of Solar-Geophysical Activity
Issued: 2007 Apr 02 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 092 Issued at 2200Z on 02 Apr 2007
IA. Analysis of Solar Active Regions and Activity from 01/2100Z to 02/2100Z: Solar activity has been very low.
IB. Solar Activity Forecast: Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 01/2100Z to 02/2100Z: 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 today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be unsettled to active on April 3 and quiet on April 4 & 5.
III. Event Probabilities 03 Apr-05 Apr
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
IV. Penticton 10.7 cm Flux
- Observed 02 Apr 071
- Predicted 03 Apr-05 Apr 072/072/072
- 90 Day Mean 02 Apr 077
V. Geomagnetic A Indices
- Observed Afr/Ap 01 Apr 017/030
- Estimated Afr/Ap 02 Apr 014/020
- Predicted Afr/Ap 03 Apr-05 Apr 012/012-005/008-005/005
VI. Geomagnetic Activity Probabilities 03 Apr-05 Apr
A. Middle Latitudes
- Active 30/15/15
- Minor storm 20/10/10
- Major-severe storm 05/01/01
B. High Latitudes
- Active 40/40/20
- Minor storm 25/25/15
- Major-severe storm 10/05/05