Joint USAF/NOAA Report of Solar and Geophysical Activity 23 Jan 2009

Product: Report of Solar-Geophysical Activity
Issued: 2009 Jan 23 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 023 Issued at 2200Z on 23 Jan 2009

IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: Solar activity was very low. No flares were observed during the past 24 hours. The visible disk is spotless.

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

IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field was quiet.

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

III. Event Probabilities 24 Jan-26 Jan

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

IV. Penticton 10.7 cm Flux

• Observed 23 Jan 070
• Predicted 24 Jan-26 Jan 070/070/070
• 90 Day Mean 23 Jan 069

V. Geomagnetic A Indices

• Observed Afr/Ap 22 Jan 000/001
• Estimated Afr/Ap 23 Jan 005/005
• Predicted Afr/Ap 24 Jan-26 Jan 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 24 Jan-26 Jan

A. Middle Latitudes

• Active 01/01/01
• Minor storm 01/01/01
• Major-severe storm 01/00/00

B. High Latitudes

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