Viewing archive of Sunday, 7 June 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 Jun 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 158 Issued at 2200Z on 07 JUN 1998IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z SOLAR ACTIVITY WAS LOW. ALL REGIONS APPEAR STABLE OR
DECLINING. A SMALL C FLARE WAS OBSERVED AT 1443UT FROM REGION 8232
(S20E09). REGION 8237 (S25E69) HAS ROTATED OVER THE EAST LIMB AS A
SMALL BXO SPOT GROUP. A TYPE II SWEEP WAS REPORTED AT 0912UT.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
ISOLATED CLASS C FLARES ARE EXPECTED, PRIMARILY FROM REGION 8232.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
THE GEOMAGNETIC FIELD WAS GENERALLY UNSETTLED TO ACTIVE. SOME MINOR
STORMING AT HIGH LATITUDES OCCURRED EARLY IN THE UT DAY.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE AT UNSETTLED TO ACTIVE LEVELS.
III. Event Probabilities 08 JUN to 10 JUN
| Class M | 20% | 20% | 20% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 07 JUN 113 Predicted 08 JUN-10 JUN 115/118/119 90 Day Mean 07 JUN 110
V. Geomagnetic A Indices
OBSERVED AFR/AP 06 JUN 015/014 ESTIMATED AFR/AP 07 JUN 012/014 PREDICTED AFR/AP 08 JUN-10 JUN 010/010-018/018-012/015
VI. Geomagnetic Activity Probabilities 08 JUN to 10 JUN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 30% | 30% |
| Minor storm | 10% | 15% | 10% |
| Major-severe storm | 05% | 06% | 06% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 10% | 15% | 15% |
| Major-severe storm | 05% | 06% | 06% |
All times in UTC
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