Viewing archive of Friday, 18 July 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 Jul 18 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 199 Issued at 2200Z on 18 JUL 1997IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z SOLAR ACTIVITY WAS VERY LOW. REGION 8062 (N23E52) IS
ALL BUT EMPTY. THE REMAINDER OF THE VISIBLE DISK WAS QUIET AND
STABLE.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN
VERY LOW.
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET WITH ISOLATED PERIODS OF UNSETTLED FOR
THE ENTIRE FORECAST PERIOD.
III. Event Probabilities 19 JUL to 21 JUL
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 18 JUL 070 Predicted 19 JUL-21 JUL 070/072/072 90 Day Mean 18 JUL 072
V. Geomagnetic A Indices
OBSERVED AFR/AP 17 JUL 011/008 ESTIMATED AFR/AP 18 JUL 008/011 PREDICTED AFR/AP 19 JUL-21 JUL 005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 19 JUL to 21 JUL
| 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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