Viewing archive of Wednesday, 3 September 2008
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 2008 Sep 03 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 247 Issued at 2200Z on 03 Sep 2008IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity was very low. No flares occurred during
the past 24 hours. The solar disk continues to be spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic field was mostly quiet during the past 24 hours.
Solar wind signatures at ACE indicated the passage of a corotating
interaction region followed by a slow steady rise in solar wind
velocity.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be mostly unsettled with occasional active periods for
the next two days (4-5 September) due to the influence of a
favorably positioned coronal hole. Activity levels are expected to
decline to predominantly unsettled for the third day (6 September).
III. Event Probabilities 04 Sep to 06 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 03 Sep 066 Predicted 04 Sep-06 Sep 066/066/066 90 Day Mean 03 Sep 066
V. Geomagnetic A Indices
Observed Afr/Ap 02 Sep 002/003 Estimated Afr/Ap 03 Sep 007/008 Predicted Afr/Ap 04 Sep-06 Sep 012/012-012/018-010/012
VI. Geomagnetic Activity Probabilities 04 Sep to 06 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 40% | 20% |
| Minor storm | 15% | 15% | 05% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 50% | 50% | 30% |
| Minor storm | 20% | 20% | 10% |
| Major-severe storm | 10% | 10% | 05% |
All times in UTC
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