Viewing archive of Monday, 30 August 2004
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 2004 Aug 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 243 Issued at 2200Z on 30 Aug 2004IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity has been low. Region 663 (N04W73)
produced a C2.4 at 30/0311 UTC and a C1.0 flare at 1818 UTC. A Type
II radio sweep was observed with the C2.4 flare at 0325 UTC. Region
663 has grown slightly as it approaches the west limb and was
observed at 140 millionths in white light. No new regions were
numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low. Region 663 may produce C-class flares.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
Geophysical activity has been at quiet to active levels. A minor
shock was observed at approximately 29/1900 UTC, most likely from a
CME associated with an erupting prominence observed on 27 Aug. Bz
at ACE remained below -10 nT for most of the day.
IIB. Geophysical Activity Forecast
Geomagnetic activity is
expected to be quiet to unsettled for the next three days. Active
conditions are possible early on day one (31 Aug) due to residual
effects from the CME shock observed 30 Aug.
III. Event Probabilities 31 Aug to 02 Sep
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Aug 090 Predicted 31 Aug-02 Sep 090/100/110 90 Day Mean 30 Aug 109
V. Geomagnetic A Indices
Observed Afr/Ap 29 Aug 005/008 Estimated Afr/Ap 30 Aug 020/025 Predicted Afr/Ap 31 Aug-02 Sep 010/012-005/008-005/008
VI. Geomagnetic Activity Probabilities 31 Aug to 02 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 20% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 25% |
| Minor storm | 20% | 15% | 15% |
| Major-severe storm | 01% | 01% | 01% |
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