Viewing archive of Thursday, 3 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 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 337 Issued at 2200Z on 03 DEC 1998IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z SOLAR ACTIVITY WAS LOW BY VIRTUE OF TWO MINOR C-CLASS
X-RAY EVENTS, ONE FROM REGION 8395 (N18W27) AND THE OTHER FROM
REGION 8397 (N14E22). DESPITE THE PRESENCE OF FIVE ADDITIONAL ACTIVE
REGIONS, THERE WAS NO OTHER ACTIVITY OF NOTE. REGIONS 8395 (21-SPOT
'FAI' BETA-GAMMA), 8397 (7-SPOT 'EAO' BETA), AND 8402 (N18E41,
8-SPOT 'EAO' BETA) REMAIN THE MOST COMPLEX.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. C-CLASS ACTIVITY IS LIKELY, AND MINOR M-CLASS EVENTS
POSSIBLE, FROM ANY OF REGIONS 8395, 8397, AND 8402.
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET TO UNSETTLED AT ALL LATITUDES
FOR THE PAST 24 HOURS.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO REMAIN QUIET TO UNSETTLED FOR THE NEXT THREE DAYS.
III. Event Probabilities 04 DEC to 06 DEC
| Class M | 25% | 25% | 25% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 03 DEC 153 Predicted 04 DEC-06 DEC 150/148/148 90 Day Mean 03 DEC 131
V. Geomagnetic A Indices
OBSERVED AFR/AP 02 DEC 004/004 ESTIMATED AFR/AP 03 DEC 008/010 PREDICTED AFR/AP 04 DEC-06 DEC 010/010-010/010-010/010
VI. Geomagnetic Activity Probabilities 04 DEC to 06 DEC
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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