Joint USAF/NOAA Report of Solar and Geophysical Activity 19 Jul 2006

Product: Report of Solar-Geophysical Activity
Issued: 2006 Jul 19 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 200 Issued at 2200Z on 19 Jul 2006

IA. Analysis of Solar Active Regions and Activity from 18/2100Z to 19/2100Z: Solar activity was very low. Region 900 (S04W25) produced two B-class flares during the past 24 hours. The largest of these was a B6 at 19/1441Z.

IB. Solar Activity Forecast: Solar activity is expected to remain very low. There is a chance for a C-class flare from Region 900.

IIA. Geophysical Activity Summary 18/2100Z to 19/2100Z: The geomagnetic field was quiet.

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

III. Event Probabilities 20 Jul-22 Jul

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

IV. Penticton 10.7 cm Flux

• Observed 19 Jul 071
• Predicted 20 Jul-22 Jul 070/070/070
• 90 Day Mean 19 Jul 080

V. Geomagnetic A Indices

• Observed Afr/Ap 18 Jul 002/003
• Estimated Afr/Ap 19 Jul 002/005
• Predicted Afr/Ap 20 Jul-22 Jul 003/005-003/005-003/005

VI. Geomagnetic Activity Probabilities 20 Jul-22 Jul 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 01/01/01
• Major-severe storm 01/01/01