Viewing archive of Wednesday, 23 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 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 204 Issued at 2200Z on 23 JUL 1997IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z SOLAR ACTIVITY HAS BEEN VERY LOW FOR THE PAST 24 HOURS.
REGION 8062 (N23W08) REGENERATED SPOTS AND GREW TO A D-TYPE GROUP.
REGION 8064 (N24E62) ROTATED INTO BETTER VIEW AND DEVELOPED INTO A
C-TYPE GROUP. THE REMAINDER OF THE DISK WAS QUIET. MINOR SURGING WAS
REPORTED ALONG THE NE LIMB (NE24-28) BETWEEN 1940-1950 UT.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
THE GEOMAGNETIC FIELD WAS QUIET FOR THE PAST 24 HOURS.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO PERSIST AT QUIET LEVELS AT MIDDLE AND LOW LATITUDES,
WITH THE POSSIBILITY OF UNSETTLED CONDITIONS AT HIGH LATITUDES.
III. Event Probabilities 24 JUL to 26 JUL
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 23 JUL 076 Predicted 24 JUL-26 JUL 075/075/075 90 Day Mean 23 JUL 072
V. Geomagnetic A Indices
OBSERVED AFR/AP 22 JUL 007/004 ESTIMATED AFR/AP 23 JUL 005/008 PREDICTED AFR/AP 24 JUL-26 JUL 005/006-005/008-005/008
VI. Geomagnetic Activity Probabilities 24 JUL to 26 JUL
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 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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