Viewing archive of Monday, 17 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 17 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 017 Issued at 2200Z on 17 JAN 2000IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z SOLAR ACTIVITY WAS LOW. A C7 X-RAY EVENT OCCURRED AT
17/0028Z WITH NO OPTICAL CORRELATION. OTHERWISE, THERE WERE ONLY
SEVERAL MINOR C-CLASS EVENTS DURING THE PERIOD. SOME DECAY WAS
OBSERVED IN REGION 8824 (S12W30) AND IT NOW HAS A MORE SIMPLE BETA
MAGNETIC CONFIGURATION. THERE WAS MINOR GROWTH IN REGION 8831
(S18E14). NEW REGION 8836 (S12E37) WAS NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. REGIONS 8824 AND 8831 HAVE THE BEST POTENTIAL TO
PRODUCE AN ISOLATED M-CLASS EVENT.
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET FOR THE NEXT TWO DAYS AND THEN BECOME QUIET TO
UNSETTLED DURING THE THIRD DAY.
III. Event Probabilities 18 JAN to 20 JAN
| Class M | 40% | 40% | 40% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 17 JAN 196 Predicted 18 JAN-20 JAN 195/190/185 90 Day Mean 17 JAN 177
V. Geomagnetic A Indices
OBSERVED AFR/AP 16 JAN 004/006 ESTIMATED AFR/AP 17 JAN 005/005 PREDICTED AFR/AP 18 JAN-20 JAN 005/005-005/005-010/007
VI. Geomagnetic Activity Probabilities 18 JAN to 20 JAN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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