Viewing archive of Friday, 9 January 1998
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 1998 Jan 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 009 Issued at 2200Z on 09 JAN 1998IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z SOLAR ACTIVITY WAS VERY LOW. THE VISIBLE DISK REMAINS
SPOTLESS.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
THE GEOMAGNETIC FIELD HAS BEEN MOSTLY QUIET AT MIDDLE LATITUDES, AND
QUIET TO UNSETLED AT HIGHER LATITUDES FOR THE PAST 24 HOURS.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET FOR THE NEXT THREE DAYS.
III. Event Probabilities 10 JAN to 12 JAN
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 09 JAN 082 Predicted 10 JAN-12 JAN 082/082/083 90 Day Mean 09 JAN 094
V. Geomagnetic A Indices
OBSERVED AFR/AP 08 JAN 007/007 ESTIMATED AFR/AP 09 JAN 008/010 PREDICTED AFR/AP 10 JAN-12 JAN 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 10 JAN to 12 JAN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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