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

Product: Report of Solar-Geophysical Activity
Issued: 2007 Dec 05 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 339 Issued at 2200Z on 05 Dec 2007

I A. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity was at very low levels. Region 977 (S06E13) was the only spotted region on the solar disk. This region declined slightly in area, however, it remains a Dso type spot group.

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

IIA. Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic field was at quiet levels.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to remain at quiet levels for the forecast period (06 – 08 December).

III. Event Probabilities 06 Dec-08 Dec

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

IV. Penticton 10.7 cm Flux O

• bserved 05 Dec 075
• Predicted 06 Dec-08 Dec 075/075/075
• 90 Day Mean 05 Dec 068

V. Geomagnetic A Indices

• Observed Afr/Ap 04 Dec 000/002
• Estimated Afr/Ap 05 Dec 003/005
• Predicted Afr/Ap 06 Dec-08 Dec 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 06 Dec-08 Dec

A. Middle Latitudes

• Active 05/05/05
• 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