Viewing archive of Saturday, 19 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 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 200 Issued at 2200Z on 19 JUL 1997IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z SOLAR ACTIVITY WAS VERY LOW. A SINGLE, LONG-DURATION A9
XRAY BURST PEAKED AT ABOUT 19/1650Z, BUT HAD NO ASSOCIATED OPTICAL
REPORTS. REGION 8062 (N23E39) IS NOW SPOTLESS, AS IS THE REMAINDER
OF THE VISIBLE DISK.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED AT ALL LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET FOR THE ENTIRE FORECAST PERIOD.
III. Event Probabilities 20 JUL to 22 JUL
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 19 JUL 071 Predicted 20 JUL-22 JUL 072/072/072 90 Day Mean 19 JUL 072
V. Geomagnetic A Indices
OBSERVED AFR/AP 18 JUL 011/010 ESTIMATED AFR/AP 19 JUL 009/009 PREDICTED AFR/AP 20 JUL-22 JUL 005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 20 JUL to 22 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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