Viewing archive of Friday, 20 June 1997
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 1997 Jun 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 171 Issued at 2200Z on 20 JUN 1997IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z SOLAR ACTIVITY WAS VERY LOW. NEW REGION 8054 (N07W72),
A SINGLE SPOT 'AXX' GROUP, WAS NUMBERED TODAY. REGION 8053 (S27E06)
CONTINUES TO DECAY SLOWLY AND IS CURRENTLY A 2 SPOT 'AXX' GROUP.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET AT ALL LATITUDES FOR THE PAST 24
HOURS, EXCEPT FOR A SINGLE PERIOD OF UNSETTLED CONDITIONS RECORDED
AT FREDERICKSBURG DURING THE INTERVAL 19/2100-2400Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET FOR THE NEXT TWO DAYS, WITH ACTIVITY
INCREASING TO QUIET TO UNSETTLED ON DAY THREE.
III. Event Probabilities 21 JUN to 23 JUN
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 20 JUN 070 Predicted 21 JUN-23 JUN 071/071/071 90 Day Mean 20 JUN 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 19 JUN 011/010 ESTIMATED AFR/AP 20 JUN 007/005 PREDICTED AFR/AP 21 JUN-23 JUN 008/005-008/005-010/008
VI. Geomagnetic Activity Probabilities 21 JUN to 23 JUN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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