Viewing archive of Tuesday, 12 August 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 Aug 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 224 Issued at 2200Z on 12 AUG 1997IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z SOLAR ACTIVITY WAS VERY LOW. X-RAY BURSTS HAVE BEEN
SMALLER AND LESS FREQUENT, WITH THE LARGEST EVENT OF THE PERIOD JUST
A B3. THE FOUR SPOTTED REGIONS HAVE ALL BEEN QUIET AND STABLE. A
FIFTH AS YET UNNUMBERED REGION MAY BE APPEARING NEAR N27W54. UNLIKE
THE LAST FEW DAYS, THE LIMBS WERE QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 13 AUG to 15 AUG
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 12 AUG 081 Predicted 13 AUG-15 AUG 082/082/084 90 Day Mean 12 AUG 073
V. Geomagnetic A Indices
OBSERVED AFR/AP 11 AUG 010/009 ESTIMATED AFR/AP 12 AUG 005/012 PREDICTED AFR/AP 13 AUG-15 AUG 005/010-005/010-005/010
VI. Geomagnetic Activity Probabilities 13 AUG to 15 AUG
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| 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% |
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