Viewing archive of Sunday, 20 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 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 201 Issued at 2200Z on 20 JUL 1997IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z SOLAR ACTIVITY HAS BEEN VERY LOW. REGION 8063 (S25
W12) EMERGED TODAY AND IS CURRENTLY A SMALL BXO SPOT GROUP. X-RAY
BACKGROUND FLUXES HAVE INCREASED SLOWLY OVER THE PAST 12 HOURS.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET.
III. Event Probabilities 21 JUL to 23 JUL
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 20 JUL 071 Predicted 21 JUL-23 JUL 072/072/072 90 Day Mean 20 JUL 072
V. Geomagnetic A Indices
OBSERVED AFR/AP 19 JUL 011/011 ESTIMATED AFR/AP 20 JUL 005/008 PREDICTED AFR/AP 21 JUL-23 JUL 005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 21 JUL to 23 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% |
All times in UTC
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