Joint USAF/NOAA Report of Solar and Geophysical Activity 24 Jul 2007

Product: Report of Solar-Geophysical Activity
Issued: 2007 Jul 24 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 205 Issued at 2200Z on 24 Jul 2007
IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity was very low. The visible disk remains spotless.
IB. Solar Activity Forecast: Solar activity is expected to remain very low.
IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet 25 July and unsettled to active 26 July as a recurrent coronal hole becomes geoeffective. On 27 July conditions should range from quiet to unsettled.
III. Event Probabilities 25 Jul-27 Jul
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
IV. Penticton 10.7 cm Flux
- Observed 24 Jul 068
- Predicted 25 Jul-27 Jul 068/068/068
- 90 Day Mean 24 Jul 074
V. Geomagnetic A Indices
- Observed Afr/Ap 23 Jul 004/003
- Estimated Afr/Ap 24 Jul 005/005
- Predicted Afr/Ap 25 Jul-27 Jul 005/005-010/015-005/005
VI. Geomagnetic Activity Probabilities 25 Jul-27 Jul
A. Middle Latitudes
- Active 10/30/10
- Minor storm 05/15/05
- Major-severe storm 01/01/01
B. High Latitudes
- Active 20/35/20
- Minor storm 10/15/10
- Major-severe storm 05/10/05