Viewing archive of Thursday, 1 January 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 Jan 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 001 Issued at 2200Z on 01 JAN 1998IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z SOLAR ACTIVITY BECAME MODERATE DUE TO AN M1/SN FROM
REGION 8124 (S21W78) AT 01/0307Z. THIS REGION ALSO PRODUCED A C1/SF
AT 01/0134Z AND A C2/SF AT 01/0704Z. FORESHORTENING MAKES ANALYSIS
DIFFICULT IN THIS REGION BUT IT IS ASSUMED THAT SOME DEGREE OF
MAGNETIC COMPLEXITY REMAINS.
IB. Solar Activity Forecast
SOLAR ACTIVITY SHOULD BE GENERALLY LOW
FOR 02-03 JAN. ISOLATED M-CLASS EVENTS ARE POSSIBLE FROM REGION 8124
DURING THIS TIME. VERY LOW LEVELS ARE EXPECTED ON 04 JAN AS REGION
8124 MOVES BEHIND THE WEST LIMB.
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. SOME HIGH LATITUDE
SITES EXPERIENCED ACTIVE CONDITIONS IN THE 01/0600-0900Z PERIOD.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
FORECAST TO BE PREDOMINANTLY QUIET FOR THE NEXT THREE DAYS.
III. Event Probabilities 02 JAN to 04 JAN
| Class M | 15% | 10% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 01 JAN 102 Predicted 02 JAN-04 JAN 098/093/090 90 Day Mean 01 JAN 095
V. Geomagnetic A Indices
OBSERVED AFR/AP 31 DEC 003/004 ESTIMATED AFR/AP 01 JAN 005/005 PREDICTED AFR/AP 02 JAN-04 JAN 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 02 JAN to 04 JAN
| 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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