Joint USAF/NOAA Report of Solar and Geophysical Activity 20 Jun 2006

Product: Report of Solar-Geophysical Activity
Issued: 2006 Jun 20 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 171 Issued at 2200Z on 20 Jun 2006

IA. Analysis of Solar Active Regions and Activity from 19/2100Z to 20/2100Z: Solar activity was very low.

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

IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z: The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit was high.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled. The greater than 2 MeV electron flux at geosynchronous orbit is expected to be moderate to high.

III. Event Probabilities 21 Jun-23 Jun

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

IV. Penticton 10.7 cm Flux

• Observed 20 Jun 073
• Predicted 21 Jun-23 Jun 075/075/075
• 90 Day Mean 20 Jun 080

V. Geomagnetic A Indices

• Observed Afr/Ap 19 Jun 004/005
• Estimated Afr/Ap 20 Jun 004/005
• Predicted Afr/Ap 21 Jun-23 Jun 005/005-005/007-005/005

VI. Geomagnetic Activity Probabilities 21 Jun-23 Jun A. Middle Latitudes

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

B. High Latitudes

• Active 20/20/20
• Minor storm 10/10/10
• Major-severe storm 01/01/01