Viewing archive of Sunday, 10 January 1999
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 1999 Jan 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 010 Issued at 2200Z on 10 JAN 1999IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z SOLAR ACTIVITY WAS LOW. REGION 8431 (S28W07) PRODUCED
THE ONLY FLARE REPORTED DURING THE LAST 24 HOURS, A C1/SF AT
10/0259UT. ALL ACTIVE REGIONS CURRENTLY ON THE VISIBLE DISK ARE
SMALL AND RELATIVELY SIMPLE. NEW REGION 8437 (N11E68) WAS NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW TO LOW.
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV
ELECTRON FLUX WAS MODERATE.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 11 JAN to 13 JAN
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 10 JAN 110 Predicted 11 JAN-13 JAN 110/110/115 90 Day Mean 10 JAN 138
V. Geomagnetic A Indices
OBSERVED AFR/AP 09 JAN 009/008 ESTIMATED AFR/AP 10 JAN 008/008 PREDICTED AFR/AP 11 JAN-13 JAN 010/008-010/008-005/008
VI. Geomagnetic Activity Probabilities 11 JAN to 13 JAN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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