Viewing archive of Monday, 28 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 28 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 209 Issued at 2200Z on 28 JUL 1997IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z SOLAR ACTIVITY WAS VERY LOW. NO SIGNIFICANT FLARES
OCCURRED. REGION 8065 (N16W95) DEPARTED THE DISK QUIETLY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD MAY
BECOME ACTIVE UNDER THE INFLUENCE OF A CORONAL HOLE AND A
LONG-DURATION X-RAY EVENT WHICH OCCURRED ON 25 JULY. THE FIELD
SHOULD RETURN TO QUIET TO UNSETTLED CONDITIONS BY THE END OF 31 JULY
III. Event Probabilities 29 JUL to 31 JUL
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 28 JUL 074 Predicted 29 JUL-31 JUL 072/070/070 90 Day Mean 28 JUL 073
V. Geomagnetic A Indices
OBSERVED AFR/AP 27 JUL 007/006 ESTIMATED AFR/AP 28 JUL 006/008 PREDICTED AFR/AP 29 JUL-31 JUL 020/035-020/030-010/015
VI. Geomagnetic Activity Probabilities 29 JUL to 31 JUL
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 40% | 25% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 40% | 30% |
| Minor storm | 10% | 15% | 10% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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