Joint USAF/NOAA Report of Solar and Geophysical Activity 03 May 2008
Product: Report of Solar-Geophysical Activity
Issued: 2008 May 03 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 124 Issued at 2200Z on 03 May 2008
IA. Analysis of Solar Active Regions and Activity from 02/2100Z to 03/2100Z: Solar activity was at very low levels.
IB. Solar Activity Forecast: Solar activity is expected to remain at very low levels.
IIA. Geophysical Activity Summary 02/2100Z to 03/2100Z: The geomagnetic field was at quiet to unsettled levels. Wind speed measured at the ACE spacecraft reached a maximum of 580 km/s at 03/2022Z and Bz ranged between +/- 7. ACE signatures indicated that Earth had entered a coronal hole high speed stream at approximately 03/1200Z.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels. There is a slight chance for isolated active levels at middle latitudes and minor storm conditions at high latitudes due to a high speed stream throughout the forecast period (04 – 06 May).
III. Event Probabilities 04 May-06 May
- Class M 01/01/01
- Class X 01/01/01
- Proton 01/01/01
- PCAF Green
IV. Penticton 10.7 cm Flux
- Observed 03 May 067
- Predicted 04 May-06 May 068/068/068
- 90 Day Mean 03 May 071
V. Geomagnetic A Indices
- Observed Afr/Ap 02 May 007/012
- Estimated Afr/Ap 03 May 008/015
- Predicted Afr/Ap 04 May-06 May 008/012-005/008-008/010
VI. Geomagnetic Activity Probabilities 04 May-06 May
A. Middle Latitudes
- Active 15/10/15
- Minor storm 05/05/05
- Major-severe storm 01/01/01
B. High Latitudes
- Active 35/15/20
- Minor storm 20/05/15
- Major-severe storm 10/01/05
