Viewing archive of Saturday, 25 October 1997
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 1997 Oct 25 2200 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 1997IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z SOLAR ACTIVITY WAS VERY LOW. THE VISIBLE DISK WAS
GENERALLY QUIET. NEW REGION 8099 (N20E64) WAS NUMBERED TODAY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN
VERY LOW FOR THE ENTIRE FORECAST PERIOD.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO MINOR STORM AT ALL LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO MINOR STORM FOR THE NEXT 12-24 HOURS, THEN
DIMINISH TO QUIET TO UNSETTLED FOR THE REMAINDER OF THE FORECAST
PERIOD.
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 081 Predicted 26 OCT-28 OCT 080/080/078 90 Day Mean 25 OCT 086
V. Geomagnetic A Indices
OBSERVED AFR/AP 24 OCT 018/025 ESTIMATED AFR/AP 25 OCT 017/020 PREDICTED AFR/AP 26 OCT-28 OCT 020/025-015/015-010/010
VI. Geomagnetic Activity Probabilities 26 OCT to 28 OCT
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 45% | 25% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 10% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 45% | 25% | 15% |
| Minor storm | 15% | 05% | 05% |
| Major-severe storm | 10% | 01% | 01% |
All times in UTC
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