Joint USAF/NOAA Report of Solar and Geophysical Activity 21 Jun 2008
Product: Report of Solar-Geophysical Activity Issued: 2008 Jun 21 2200 UTC Prepared jointly by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center and the U.S. Air Force.
Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 173 Issued at 2200Z on 21 Jun 2008
IA. Analysis of Solar Active Regions and Activity from 20/2100Z to 21/2100Z: Solar activity was at very low levels. Region 999 (S02W08) remained stable over the period.
IB. Solar Activity Forecast: Solar activity is expected to remain at very low levels.
IIA. Geophysical Activity Summary 20/2100Z to 21/2100Z: The geomagnetic field was at mostly quiet levels. Solar wind velocities gradually decayed from a peak of near 600 km/s at the beginning of the period to about 500 km/s at forecast issue time.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at mostly quiet levels for the forecast period (22 to 24 June).
III. Event Probabilities 22 Jun-24 Jun
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
IV. Penticton 10.7 cm Flux
- Observed 21 Jun 065
- Predicted 22 Jun-24 Jun 065/065/065
- 90 Day Mean 21 Jun 070
V. Geomagnetic A Indices
- Observed Afr/Ap 20 Jun 008/011
- Estimated Afr/Ap 21 Jun 007/005
- Predicted Afr/Ap 22 Jun-24 Jun 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 22 Jun-24 Jun
A. Middle Latitudes
- Active 10/10/10
- Minor storm 01/01/01
- Major-severe storm 01/01/01
B. High Latitudes
- Active 10/10/10
- Minor storm 05/05/05
- Major-severe storm 01/01/01
