Viewing archive of Friday, 30 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 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 030 Issued at 2200Z on 30 JAN 1998IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z SOLAR ACTIVITY WAS VERY LOW. THE THREE ACTIVE REGIONS
CURRENTLY ON THE VISIBLE DISK HAVE ALL BEEN QUIET AND UNREMARKABLE
DURING THE PAST 24 HOURS.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN
VERY LOW.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
THE GEOMAGNETIC FIELD HAS BEEN MOSTLY UNSETTLED TO ACTIVE DURING THE
PAST 24 HOURS, WITH A SINGLE PERIOD OF MINOR STORMING RECORDED AT
ALL LATITUDES DURING THE INTERVAL 30/0300-0600Z. THIS DISTURBANCE
WAS LIKELY CAUSED BY THE PARTIAL HALO CME DETECTED ON 25 JANUARY.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY UNSETTLED FOR THE NEXT 12 HOURS, WITH
CONDITIONS DECREASING TO MOSTLY QUIET FOR THE REMAINDER OF THE
FORECAST PERIOD.
III. Event Probabilities 31 JAN to 02 FEB
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 30 JAN 091 Predicted 31 JAN-02 FEB 090/089/088 90 Day Mean 30 JAN 097
V. Geomagnetic A Indices
OBSERVED AFR/AP 29 JAN 006/008 ESTIMATED AFR/AP 30 JAN 020/015 PREDICTED AFR/AP 31 JAN-02 FEB 008/010-005/008-005/008
VI. Geomagnetic Activity Probabilities 31 JAN to 02 FEB
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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