Viewing archive of Monday, 28 May 2007
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 2007 May 28 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 148 Issued at 2200Z on 28 May 2007IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity has been very low.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field has been predominately quiet. The greater than
2 MeV electron flux at geosynchronous orbit reached high levels
again today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet May 29 - 31.
III. Event Probabilities 29 May to 31 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 28 May 069 Predicted 29 May-31 May 065/065/065 90 Day Mean 28 May 073
V. Geomagnetic A Indices
Observed Afr/Ap 27 May 010/012 Estimated Afr/Ap 28 May 004/005 Predicted Afr/Ap 29 May-31 May 003/005-003/005-002/005
VI. Geomagnetic Activity Probabilities 29 May to 31 May
| 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% |
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