Viewing archive of Tuesday, 25 January 2000
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 2000 Jan 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 025 Issued at 2200Z on 25 JAN 2000IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z SOLAR ACTIVITY WAS LOW. SEVERAL LOW-LEVEL C-CLASS
FLARES OCCURRED DURING THE PERIOD. THE LARGEST EVENT WAS A C6/SF AT
25/0623Z FROM REGION 8842 (S17W37). A NEW REGION WAS NUMBERED TODAY
AS 8845 (S14E24).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
FOR THE FORECAST PERIOD.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
THE GEOMAGNETIC FIELD WAS AT QUIET TO UNSETTLED LEVELS.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED THE FIRST TWO DAYS OF THE FORECAST
WITH UNSETTLED TO ACTIVE CONDITIONS FOR THE THIRD DAY. THE FIELD IS
EXPECTED TO BECOME DISTURBED AS A RESULT OF A WELL POSITIONED
EQUATORIAL CORONAL HOLE.
III. Event Probabilities 26 JAN to 28 JAN
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 25 JAN 137 Predicted 26 JAN-28 JAN 135/130/130 90 Day Mean 25 JAN 176
V. Geomagnetic A Indices
OBSERVED AFR/AP 24 JAN 012/017 ESTIMATED AFR/AP 25 JAN 008/007 PREDICTED AFR/AP 26 JAN-28 JAN 005/010-015/018-020/025
VI. Geomagnetic Activity Probabilities 26 JAN to 28 JAN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 40% | 50% |
| Minor storm | 05% | 15% | 20% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 50% | 60% |
| Minor storm | 10% | 20% | 25% |
| Major-severe storm | 01% | 05% | 10% |
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