Joint USAF/NOAA Report of Solar and Geophysical Activity 12 Oct 2007

Product: Report of Solar-Geophysical Activity
Issued: 2007 Oct 12 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 285 Issued at 2200Z on 12 Oct 2007

IA. Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z: 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 11/2100Z to 12/2100Z: The geomagnetic field was quiet. The greater than 2 MeV electrons at geosynchronous orbit reached high levels again today.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to remain quiet.

III. Event Probabilities 13 Oct-15 Oct

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

IV. Penticton 10.7 cm Flux

• Observed 12 Oct 069
• Predicted 13 Oct-15 Oct 069/069/069
• 90 Day Mean 12 Oct 068

V. Geomagnetic A Indices

• Observed Afr/Ap 11 Oct 000/001
• Estimated Afr/Ap 12 Oct 003/005
• Predicted Afr/Ap 13 Oct-15 Oct 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 13 Oct-15 Oct

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 01/01/01
• Major-severe storm 01/01/01