Joint USAF/NOAA Report of Solar and Geophysical Activity 05 Oct 2007

Product: Report of Solar-Geophysical Activity
Issued: 2007 Oct 05 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 278 Issued at 2200Z on 05 Oct 2007

IA. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity was very low. The visible disk remains spotless.

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

IIA. Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic field was quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels again today.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the forecast period, 06 – 08 October.

III. Event Probabilities 06 Oct-08 Oct

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

IV. Penticton 10.7 cm Flux

• Observed 05 Oct 068
• Predicted 06 Oct-08 Oct 067/067/067
• 90 Day Mean 05 Oct 069

V. Geomagnetic A Indices

• Observed Afr/Ap 04 Oct 008/010
• Estimated Afr/Ap 05 Oct 004/005
• Predicted Afr/Ap 06 Oct-08 Oct 004/005-004/005-004/005

VI. Geomagnetic Activity Probabilities 06 Oct-08 Oct

A. Middle Latitudes

• Active 15/15/15
• Minor storm 05/05/05
• Major-severe storm 01/01/01

B. High Latitudes

• Active 20/15/15
• Minor storm 15/10/10
• Major-severe storm 05/05/05