Joint USAF/NOAA Report of Solar and Geophysical Activity 24 Apr 2006

Product: Report of Solar-Geophysical Activity
Issued: 2006 Apr 24 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 114 Issued at 2200Z on 24 Apr 2006

IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity was low. Region 875 (S10E62) produced a C1 flare at 24/0404 UTC. This region is approximately 430 millionths in area with a beta gamma magnetic classification. New Region 876 (S14E80) was numbered today.

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

IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field was mostly quiet.

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

III. Event Probabilities 25 Apr-27 Apr

• Class M 05/10/10
• Class X 01/01/01
• Proton 01/01/01
• PCAF green

IV. Penticton 10.7 cm Flux

• Observed 24 Apr 093
• Predicted 25 Apr-27 Apr 085/090/090
• 90 Day Mean 24 Apr 079

V. Geomagnetic A Indices

• Observed Afr/Ap 23 Apr 008/008
• Estimated Afr/Ap 24 Apr 005/008
• Predicted Afr/Ap 25 Apr-27 Apr 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 25 Apr-27 Apr

A. Middle Latitudes

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

B. High Latitudes

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