Viewing archive of Monday, 7 December 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 Dec 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 341 Issued at 2200Z on 07 DEC 1998IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z SOLAR ACTIVITY WAS LOW. THREE MINOR C-CLASS X-RAY
EVENTS OCCURRED OVER THE LAST 24 HOURS. A NEW REGION WAS NUMBERED,
8406 (S29E67) DURING THE UT DAY. THIS ASSIGNED LOCATION AGREES
FAIRLY WELL WITH OLD RETURNING REGION 8384. REGION 8404 (S23W12)
HAS HAD SIGNIFICANT GROWTH OCCUR DURING THE PERIOD.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN
LOW WITH CONTINUED C-CLASS EVENTS.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
THE GEOMAGNETIC FIELD WAS QUIET DURING THE PAST 24 HOURS. THE
GREATER THAN 2 MEV ELECTRON FLUX CONTINUES TO BE IN THE MODERATE TO
HIGH RANGE.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS.
III. Event Probabilities 08 DEC to 10 DEC
| Class M | 20% | 20% | 20% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 07 DEC 153 Predicted 08 DEC-10 DEC 150/148/146 90 Day Mean 07 DEC 131
V. Geomagnetic A Indices
OBSERVED AFR/AP 06 DEC 003/007 ESTIMATED AFR/AP 07 DEC 006/006 PREDICTED AFR/AP 08 DEC-10 DEC 008/008-008/008-008/008
VI. Geomagnetic Activity Probabilities 08 DEC to 10 DEC
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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