Viewing archive of Monday, 20 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 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 293 Issued at 2200Z on 20 OCT 1997IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z SOLAR ACTIVITY WAS VERY LOW. NO SIGNIFICANT FLARES
OCCURRED. THE TWO ACTIVE REGIONS CURRENTLY ON THE VISIBLE DISK, 8096
(N13W16) AND 8097 (N16E13), REMAIN STABLE AS 'HSX' SPOT GROUPS.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
THE GEOMAGNETIC FIELD HAS BEEN MOSTLY QUIET FOR THE PAST 24 HOURS,
EXCEPT FOR A SINGLE PERIOD OF UNSETTLED TO ACTIVE CONDITIONS
RECORDED DURING THE INTERVAL 20/0600-0900ZA.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET, WITH ISOLATED PERIODS OF UNSETTLED
CONDITIONS, FOR THE NEXT THREE DAYS.
III. Event Probabilities 21 OCT to 23 OCT
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 20 OCT 083 Predicted 21 OCT-23 OCT 083/083/082 90 Day Mean 20 OCT 086
V. Geomagnetic A Indices
OBSERVED AFR/AP 19 OCT 004/003 ESTIMATED AFR/AP 20 OCT 007/006 PREDICTED AFR/AP 21 OCT-23 OCT 010/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 OCT to 23 OCT
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 01% | 01% |
All times in UTC
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