Viewing archive of Sunday, 7 December 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 Dec 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 341 Issued at 2200Z on 07 DEC 1997IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z SOLAR ACTIVITY WAS VERY LOW. REGION 8113 (N20W70) IS
NEARING THE WEST LIMB AND CONTINUES ITS STEADY DECAY. IT IS NOW A 3
SPOT CSO GROUP. NEW REGION 8117 (N21E37), A BXO GROUP WITH 3 SPOTS
WAS NUMBERED TODAY. THE REMAINING 3 REGIONS HAVE SHOWN SOME SLOW
GROWTH BUT ARE STILL MOSTLY SMALL PLAGE AREAS WITH SIMPLE MAGNETIC
CONFIGURATIONS.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW TO LOW. REGION 8113'S THREAT HAS GREATLY DIMINISHED BUT VERY
ISOLATED C-CLASS FLARING IS STILL POSSIBLE.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET AT ALL LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO REMAIN QUIET.
III. Event Probabilities 08 DEC to 10 DEC
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 07 DEC 099 Predicted 08 DEC-10 DEC 098/096/096 90 Day Mean 07 DEC 094
V. Geomagnetic A Indices
OBSERVED AFR/AP 06 DEC 005/005 ESTIMATED AFR/AP 07 DEC 003/008 PREDICTED AFR/AP 08 DEC-10 DEC 005/008-005/008-005/005
VI. Geomagnetic Activity Probabilities 08 DEC to 10 DEC
| 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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