Joint USAF/NOAA Report of Solar and Geophysical Activity 29 Mar 2005

Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Environment Center and the U.S. Air Force.
Updated 2005 Mar 29 2210 UTC

Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 088 Issued at 2200Z on 29 Mar 2005

IA. Analysis of Solar Active Regions and Activity from 28/2100Z
to 29/2100Z: Solar activity was very low again today. Region 745
(N12W56) continues to slowly decay. No significant activity was
observed on the solar disk or limb.

IB. Solar Activity Forecast: Solar activity is expected to continue
at very low levels.

IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z:
The geomagnetic field was quiet. The greater than 2 MeV electron
flux at geosynchronous orbit was at high levels again today.

IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to be quiet for the next two days. Quiet to unsettled is
expected on 1 April.

III. Event Probabilities 30 Mar-01 Apr

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

IV. Penticton 10.7 cm Flux

• Observed 29 Mar 079
• Predicted 30 Mar-01 Apr 080/080/080
• 90 Day Mean 29 Mar 097

V. Geomagnetic A Indices

• Observed Afr/Ap 28 Mar 002/004
• Estimated Afr/Ap 29 Mar 002/004
• Predicted Afr/Ap 30 Mar-01 Apr 005/005-005/005-008/010

VI. Geomagnetic Activity Probabilities 30 Mar-01 Apr

A. Middle Latitudes

• Active 10/10/15
• Minor storm 05/05/05
• Major-severe storm 01/01/01

B. High Latitudes

• Active 15/15/25
• Minor storm 05/05/10
• Major-severe storm 01/01/05