Joint USAF/NOAA Report of Solar and Geophysical Activity 29 Aug 2008

Product: Report of Solar-Geophysical Activity
Issued: 2008 Aug 29 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 242 Issued at 2200Z on 29 Aug 2008

IA. Analysis of Solar Active Regions and Activity from 28/2100Z to 29/2100Z: Solar activity was very low. The visible solar disk remains spotless.

IB. Solar Activity Forecast: Solar activity is expected to be very low.

IA. Geophysical Activity Summary 28/2100Z to 29/2100Z: The geomagnetic field was quiet. The solar wind data as measured at the ACE spacecraft indicated signatures of a solar sector boundary crossing between 29/1330Z to 29/1530Z.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the next three days (30 August – 01 September).

III. Event Probabilities 30 Aug-01 Sep

• Class M 01/01/01
• Class X 01/01/01
• Proton 01/01/01
• PCAF Green

IV. Penticton 10.7 cm Flux

• Observed 29 Aug 067
• Predicted 30 Aug-01 Sep 067/067/067
• 90 Day Mean 29 Aug 066

V. Geomagnetic A Indices

• Observed Afr/Ap 28 Aug 002/002
• Estimated Afr/Ap 29 Aug 002/005
• Predicted Afr/Ap 30 Aug-01 Sep 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 30 Aug-01 Sep

A. Middle Latitudes

• Active 01/01/01
• Minor storm 01/01/01
• Major-severe storm 01/01/01

B. High Latitudes

• Active 05/05/05
• Minor storm 01/01/01
• Major-severe storm 01/01/01