Viewing archive of Friday, 17 March 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 Mar 17 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 077 Issued at 2200Z on 17 MAR 2000IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z SOLAR ACTIVITY WAS MODERATE. REGION 8906 (S16W49)
PRODUCED AN M1/SF FLARE AT 17/1125UT. FURTHER DECAY AND MAGNETIC
SIMPLIFICATION IS EVIDENT SINCE YESTERDAY. REGION 8910 (N11E05)
CONTINUED TO GROW SLOWLY AND MANAGED TO PRODUCE A C6/1F AT
16/2215UT. NEW REGIONS 8915 (N23E62) AND 8916 (N12E74) ROTATED
AROUND THE EAST LIMB.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. C-CLASS AND ISOLATED M-CLASS FLARE ACTIVITY IS MOST
LIKELY IN REGIONS 8906 AND 8910. A SMALL CHANCE OF A MAJOR FLARE
REMAINS IN REGION 8906.
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 18 MAR to 20 MAR
| Class M | 50% | 50% | 50% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 17 MAR 192 Predicted 18 MAR-20 MAR 180/180/185 90 Day Mean 17 MAR 175
V. Geomagnetic A Indices
OBSERVED AFR/AP 16 MAR 002/004 ESTIMATED AFR/AP 17 MAR 005/006 PREDICTED AFR/AP 18 MAR-20 MAR 005/008-005/008-010/008
VI. Geomagnetic Activity Probabilities 18 MAR to 20 MAR
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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