Viewing archive of Wednesday, 30 March 2005
Solar activity report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2005 Mar 30 2210 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 089 Issued at 2200Z on 30 Mar 2005IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was at very low levels today. Region
745 (N12W68) continues to show signs of decay. There is a single
AXX alpha spot remaining visible in white light. No significant
activity was observed on the disk or limbs during the period. No
new regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low levels.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was at predominantly quiet to unsettled levels.
Active conditions were observed following a sustained southward Bz
between 30/0600 and 0900Z. The greater than 2 MeV electron flux at
geosynchronous orbit reached high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels. Isolated active to
minor storm conditions are possible on 2 April due to the onset of a
recurrent high speed coronal hole stream.
III. Event Probabilities 31 Mar to 02 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Mar 078 Predicted 31 Mar-02 Apr 080/080/085 90 Day Mean 30 Mar 097
V. Geomagnetic A Indices
Observed Afr/Ap 29 Mar 003/005 Estimated Afr/Ap 30 Mar 008/009 Predicted Afr/Ap 31 Mar-02 Apr 005/005-008/008-015/015
VI. Geomagnetic Activity Probabilities 31 Mar to 02 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 30% |
| Minor storm | 01% | 05% | 10% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 30% |
| Minor storm | 01% | 05% | 10% |
| Major-severe storm | 01% | 01% | 05% |
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