Viewing archive of Sunday, 8 February 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 Feb 08 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 039 Issued at 2200Z on 08 FEB 1998IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z SOLAR ACTIVITY WAS VERY LOW. SEVERAL MINOR B-CLASS
FLARES OCCURRED. REGION 8152 (S22W84) CONTINUES TO EXHIBIT
FLUCTUATIONS IN INTENSITY AND OCCASIONAL SURGING AS IT APPROACHES
THE WEST LIMB. THE REMAINING REGIONS HAVE BEEN QUIET AND STABLE. NEW
REGION 8153 (S38E41) WAS NUMBERED TODAY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN
VERY LOW.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
THE GEOMAGNETIC FIELD WAS MOSTLY QUIET. INTERMITTENT UNSETTLED
CONDITIONS OCCURRED IN THE HIGH LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO REMAIN MOSTLY QUIET. PERIODS OF UNSETTLED CONDITIONS ARE
EXPECTED AGAIN IN THE HIGH LATITUDES.
III. Event Probabilities 09 FEB to 11 FEB
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 08 FEB 084 Predicted 09 FEB-11 FEB 083/084/084 90 Day Mean 08 FEB 096
V. Geomagnetic A Indices
OBSERVED AFR/AP 07 FEB 002/003 ESTIMATED AFR/AP 08 FEB 005/008 PREDICTED AFR/AP 09 FEB-11 FEB 005/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 09 FEB to 11 FEB
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| 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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