Joint USAF/NOAA Report of Solar and Geophysical Activity 16 Dec 2008

Product: Report of Solar-Geophysical Activity
Issued: 2008 Dec 16 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 351 Issued at 2200Z on 16 Dec 2008

IA. Analysis of Solar Active Regions and Activity from 15/2100Z to 16/2100Z: Solar activity was very low. The visible solar disk remains spotless.

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

IIA. Geophysical Activity Summary 15/2100Z to 16/2100Z: The geomagnetic field was at quiet levels.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels.

III. Event Probabilities 17 Dec-19 Dec

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

IV. Penticton 10.7 cm Flux

• Observed 16 Dec 069
• Predicted 17 Dec-19 Dec 068/068/068
• 90 Day Mean 16 Dec 069

V. Geomagnetic A Indices

• Observed Afr/Ap 15 Dec 001/001
• Estimated Afr/Ap 16 Dec 002/005
• Predicted Afr/Ap 17 Dec-19 Dec 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 17 Dec-19 Dec

A. Middle Latitudes

• Active 10/05/05
• Minor storm 05/01/01
• Major-severe storm 01/01/01

B. High Latitudes

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