Viewing archive of Tuesday, 25 October 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 Oct 25 2204 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 298 Issued at 2200Z on 25 Oct 2005IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity was at very low levels. No sunspots
were reported on the visible disk. No new regions were numbered
today.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low levels.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic field was at quiet to active levels. A solar sector
boundary crossing was observed at ACE at 24/2000 UTC. Solar wind
speed is elevated at approximately 450 km/s due to a geoeffective
coronal hole high speed wind stream.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels. Isolated active
conditions are possible due to the ongoing effects of a coronal hole
high speed stream.
III. Event Probabilities 26 Oct to 28 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Oct 073 Predicted 26 Oct-28 Oct 075/075/075 90 Day Mean 25 Oct 088
V. Geomagnetic A Indices
Observed Afr/Ap 24 Oct 003/004 Estimated Afr/Ap 25 Oct 012/020 Predicted Afr/Ap 26 Oct-28 Oct 008/010-005/008-008/008
VI. Geomagnetic Activity Probabilities 26 Oct to 28 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 20% |
| 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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