Report of Solar-Geophysical Activity

Issued: 2006 Mar 26 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 085 Issued at 2200Z on 26 Mar 2006 IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity was very low.

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

IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z:

The geomagnetic field was quiet to unsettled. The 2 MeV electron flux at geosynchronous orbit was high.

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

III. Event Probabilities 27 Mar-29 Mar

Class M 01/01/01

Class X 01/01/01

Proton 01/01/01

PCAF green

IV. Penticton 10.7 cm Flux

Observed 26 Mar 074

Predicted 27 Mar-29 Mar 075/075/075

90 Day Mean 26 Mar 079

V. Geomagnetic A Indices

Observed Afr/Ap 25 Mar 004/007

Estimated Afr/Ap 26 Mar 005/005

Predicted Afr/Ap 27 Mar-29 Mar 005/007-005/005-005/005 VI. Geomagnetic Activity Probabilities 27 Mar-29 Mar A. Middle Latitudes

Active 10/10/10

Minor storm 05/05/05

Major-severe storm 01/01/01

B. High Latitudes

Active 10/10/10

Minor storm 05/05/05

Major-severe storm 01/01/01