Viewing archive of Sunday, 4 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 04 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 004 Issued at 2200Z on 04 JAN 1998IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z SOLAR ACTIVITY WAS VERY LOW. ONLY SMALL B-CLASS FLARES
OCCURRED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET FOR THE NEXT 24 HOURS. INCREASED
ACTIVITY MAY OCCUR ON JANUARY 6-7 DUE TO A CME OBSERVED ON 03
JANUARY.
III. Event Probabilities 05 JAN to 07 JAN
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 04 JAN 091 Predicted 05 JAN-07 JAN 088/086/084 90 Day Mean 04 JAN 095
V. Geomagnetic A Indices
OBSERVED AFR/AP 03 JAN 004/004 ESTIMATED AFR/AP 04 JAN 004/005 PREDICTED AFR/AP 05 JAN-07 JAN 005/005-010/010-015/012
VI. Geomagnetic Activity Probabilities 05 JAN to 07 JAN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 25% | 25% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 30% | 30% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 05% | 05% |
All times in UTC
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