Viewing archive of Tuesday, 7 July 1998
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 1998 Jul 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 188 Issued at 2200Z on 07 JUL 1998IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z SOLAR ACTIVITY WAS LOW. ONLY ONE C-CLASS EVENT
OCCURRED, A C1/1F FROM SPOTLESS REGION 8259 (N25W51) AT 07/1015UT,
REGION 8264 PRODUCED A B7/SF AT 07/1955UT. THE REST OF THE REGIONS
HAVE BEEN QUIET. THE NUMBER OF SPOTTED REGIONS HAS DECREASED FROM
SEVEN TO FOUR INCLUDING THE NEW NUMBERED NEW REGION 8267 (N33E33).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
REGION 8264 COULD POSSIBLY PRODUCE C-CLASS ACTIVITY.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 08 JUL to 10 JUL
| Class M | 10% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 07 JUL 115 Predicted 08 JUL-10 JUL 112/110/108 90 Day Mean 07 JUL 108
V. Geomagnetic A Indices
OBSERVED AFR/AP 06 JUL 010/019 ESTIMATED AFR/AP 07 JUL 010/017 PREDICTED AFR/AP 08 JUL-10 JUL 010/008-010/008-010/008
VI. Geomagnetic Activity Probabilities 08 JUL to 10 JUL
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 40% | 40% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 05% | 05% | 05% |
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