Viewing archive of Monday, 4 September 2006
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 2006 Sep 04 2203 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 04 Sep 2006IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z Solar activity was very low. A CME was observed on the
Muana Loa coronagraph at 04/1701 UTC likely associated with a long
duration B2.8 flare on the west limb. This CME is not expected to be
geoeffective. No new regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
The geomagnetic field was at quiet to major storm levels. A major
storm period was observed between 04/0300 - 0600 UTC due to the
effects of a coronal hole high speed stream. Solar wind speed at ACE
increased from approximately 410 km/s to 630 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled to active with minor storm periods possible
due to the continued effects from the coronal hole high speed stream
on 05 September. Quiet to unsettled conditions are expected on 06
and 07 September.
III. Event Probabilities 05 Sep to 07 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 04 Sep 079 Predicted 05 Sep-07 Sep 080/080/080 90 Day Mean 04 Sep 077
V. Geomagnetic A Indices
Observed Afr/Ap 03 Sep 006/006 Estimated Afr/Ap 04 Sep 018/020 Predicted Afr/Ap 05 Sep-07 Sep 010/012-006/008-004/005
VI. Geomagnetic Activity Probabilities 05 Sep to 07 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 10% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 15% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 05% | 01% | 01% |
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