Joint USAF/NOAA Report of Solar and Geophysical Activity 28 Mar 2006

Product: Report of Solar-Geophysical Activity
Issued: 2006 Mar 28 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 087 Issued at 2200Z on 28 Mar 2006

IA. Analysis of Solar Active Regions and Activity from 27/2100Z to 28/2100Z: Solar activity was very low. New Region 865 (S13E60) rotated around the east limb.

IB. Solar Activity Forecast: Solar activity is expected to be very low to low. C-class flares are possible in Region 865.

IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z: The geomagnetic field ranged from quiet to active. An isolated active period was observed at Boulder from 28/0300-0600 UTC.

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

III. Event Probabilities 29 Mar-31 Mar

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

IV. Penticton 10.7 cm Flux

• Observed 28 Mar 079
• Predicted 29 Mar-31 Mar 080/080/080
• 90 Day Mean 28 Mar 079

V. Geomagnetic A Indices

• Observed Afr/Ap 27 Mar 008/009
• Estimated Afr/Ap 28 Mar 008/008
• Predicted Afr/Ap 29 Mar-31 Mar 008/008-008/008-005/005

VI. Geomagnetic Activity Probabilities 29 Mar-31 Mar

A. Middle Latitudes

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

B. High Latitudes

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