Viewing archive of Saturday, 23 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 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 235 Issued at 2200Z on 23 AUG 1997IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z SOLAR ACTIVITY WAS VERY LOW. A LONG DURATION B3 X-RAY
EVENT WAS RECORDED AT AN UNSPECIFIED LOCATION DURING THE INTERVAL
23/1413-1456Z. REGION 8073 (N13W85), THE ONLY ACTIVE REGION ON THE
VISIBLE DISK, IS QUIETLY ROTATING AROUND THE WEST LIMB AS A SINGLE
SPOT 'AXX' GROUP. OLD REGION 8069 APPEARS TO BE RETURNING AROUND
THE EAST LIMB, WITH IT'S CURRENT CHARACTERISTICS AND INTENSITY AS
YET UNDEFINED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET AT ALL LATITUDES FOR THE PAST 24
HOURS.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET FOR THE NEXT THREE DAYS, WITH THE CHANCE
FOR ISOLATED PERIODS OF UNSETTLED CONDITIONS.
III. Event Probabilities 24 AUG to 26 AUG
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 23 AUG 076 Predicted 24 AUG-26 AUG 075/075/075 90 Day Mean 23 AUG 073
V. Geomagnetic A Indices
OBSERVED AFR/AP 22 AUG 008/007 ESTIMATED AFR/AP 23 AUG 004/004 PREDICTED AFR/AP 24 AUG-26 AUG 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 24 AUG to 26 AUG
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| 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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