Viewing archive of Thursday, 2 October 2003
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 2003 Oct 02 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 275 Issued at 2200Z on 02 Oct 2003IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z Solar activity was low. Region 464 (N05W86) produced a
C7/1f flare with minor centimetric bursts at 02/0656Z. This region
continues to produce mostly minor C-class flares as it approaches
the west limb. Region 471 (S08E42), which continues to develop in
both size and magnetic complexity, produced a C4 flare at 02/1611Z.
Regular plage fluctuations and surge activity were observed in this
region throughout the period. No significant changes or activity
were noted in the remaining active regions.
IB. Solar Activity Forecast
Solar activity is expected to be low.
There is a small chance for an M-class flare from Region 471.
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
The geomagnetic field was quiet to unsettled with isolated active
levels at the beginning of the period. Solar wind IMF signatures are
consistent with a transient passage, but solar wind speed has
remained quite low (300 - 400 km/s); consequently, geomagnetic field
impact was minimal.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be mostly quiet to unsettled with isolated active
periods.
III. Event Probabilities 03 Oct to 05 Oct
| Class M | 20% | 20% | 20% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Oct 125 Predicted 03 Oct-05 Oct 125/125/120 90 Day Mean 02 Oct 120
V. Geomagnetic A Indices
Observed Afr/Ap 01 Oct 007/010 Estimated Afr/Ap 02 Oct 008/015 Predicted Afr/Ap 03 Oct-05 Oct 008/012-005/010-005/010
VI. Geomagnetic Activity Probabilities 03 Oct to 05 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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