Viewing archive of Saturday, 9 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 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 221 Issued at 2200Z on 09 AUG 1997IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z SOLAR ACTIVITY WAS LOW. REGION 8069 (N21W86) PRODUCED A
NUMBER OF C-CLASS X-RAY FLARES AS IT MAKES LIMB TRANSIT. ITS LARGEST
EVENT WAS A C8 AT 1634Z. NEW REGION 8072 (N21E21) EMERGED QUIETLY ON
THE DISK, WHILE THE OTHER SPOT GROUPS WERE QUIET AND STABLE.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
ADDITIONAL C-CLASS FLARES ARE LIKELY IN THE NEXT 24 HOURS FROM
REGION 8069.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO PERSIST AT QUIET TO UNSETTLED LEVELS.
III. Event Probabilities 10 AUG to 12 AUG
| Class M | 10% | 05% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 09 AUG 078 Predicted 10 AUG-12 AUG 078/078/076 90 Day Mean 09 AUG 073
V. Geomagnetic A Indices
OBSERVED AFR/AP 08 AUG 007/005 ESTIMATED AFR/AP 09 AUG 007/005 PREDICTED AFR/AP 10 AUG-12 AUG 005/005-005/010-005/008
VI. Geomagnetic Activity Probabilities 10 AUG to 12 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% |
All times in UTC
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