Viewing archive of Thursday, 24 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 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 205 Issued at 2200Z on 24 JUL 1997IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z SOLAR ACTIVITY WAS VERY LOW. NEW REGION 8065 (N17W43)
EMERGED OVERNIGHT AND HAS SHOWN STEADY GROWTH. THE GROUP PRODUCED
THE DAY'S LARGEST X-RAY EVENT, A B9/SF AT 1305Z. SURGE ACTIVITY AND
X-RAY IMAGE DATA SHOW THAT A NEW REGION IS COMING AROUND EAST LIMB
AT ABOUT N26.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW TO LOW. THERE IS A FAIR CHANCE FOR AN ISOLATED C-CLASS EVENT
OVER THE NEXT THREE DAYS. BACKGROUND FLUX LEVELS ARE EXPECTED TO
TREND UPWARDS OVER THE NEXT FEW DAYS.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS.
III. Event Probabilities 25 JUL to 27 JUL
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 24 JUL 079 Predicted 25 JUL-27 JUL 080/082/082 90 Day Mean 24 JUL 072
V. Geomagnetic A Indices
OBSERVED AFR/AP 23 JUL 007/005 ESTIMATED AFR/AP 24 JUL 008/006 PREDICTED AFR/AP 25 JUL-27 JUL 005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 25 JUL to 27 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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