Viewing archive of Sunday, 19 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 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 292 Issued at 2200Z on 19 OCT 1997IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z SOLAR ACTIVITY WAS VERY LOW. THE ONLY X-RAY FLARE THAT
OCCURRED DURING THE PAST 24 HOURS WAS A B1 AT 19/1906Z. NO
OPTICAL FLARES WERE REPORTED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED. THERE IS A SMALL POSSIBILITY OF
INCREASED ACTIVITY ON OCT 20 OR 21 DUE TO A CME OBSERVED ON THE SW
LIMB IN ASSOCIATION WITH AN LDE X-RAY EVENT AT 16/2147Z.
III. Event Probabilities 20 OCT to 22 OCT
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 19 OCT 085 Predicted 20 OCT-22 OCT 085/085/085 90 Day Mean 19 OCT 086
V. Geomagnetic A Indices
OBSERVED AFR/AP 18 OCT 003/003 ESTIMATED AFR/AP 19 OCT 004/005 PREDICTED AFR/AP 20 OCT-22 OCT 015/008-015/008-010/004
VI. Geomagnetic Activity Probabilities 20 OCT to 22 OCT
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 01% |
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