Viewing archive of Monday, 25 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 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 237 Issued at 2200Z on 25 AUG 1997IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z SOLAR ACTIVITY WAS LOW. NEW REGION 8076 (N29E63), A
GROWING CRO SPOT GROUP, PRODUCED TWO SMALL C-CLASS FLARES. THIS IS
THE RETURN OF REGION 8069. NEW REGION 8077 (S23E59), A SMALL BXO
GROUP, WAS ALSO NUMBERED TODAY. THE REMAINDER OF THE VISBLE DISK WAS
QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN
LOW. REGION 8076 HAS A GOOD CHANCE OF PRODUCING MORE C-CLASS FLARES
AND HAS AN OUTSIDE CHANCE OF AN ISOLATED M-CLASS FLARE AS WELL.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
THE GEOMAGNETIC FIELD WAS MOSTLY QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED FOR THE ENTIRE FORECAST PERIOD.
III. Event Probabilities 26 AUG to 28 AUG
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 25 AUG 082 Predicted 26 AUG-28 AUG 084/086/086 90 Day Mean 25 AUG 073
V. Geomagnetic A Indices
OBSERVED AFR/AP 24 AUG 008/006 ESTIMATED AFR/AP 25 AUG 005/005 PREDICTED AFR/AP 26 AUG-28 AUG 005/008-010/012-010/008
VI. Geomagnetic Activity Probabilities 26 AUG to 28 AUG
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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