Viewing archive of Friday, 30 May 1997
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 1997 May 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 150 Issued at 2200Z on 30 MAY 1997IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z SOLAR ACTIVITY WAS VERY LOW. REGION 8047 (N27E31)
REMAINS STABLE AS A 3 SPOT 'CRO' BETA GROUP, WHILE REGION 8046
(S26W29) HAS DECAYED INTO A SPOTLESS PLAGE. NEW REGIONS 8048
(S28E56) AND 8049 (S26E17), BOTH SINGLE SPOT 'AXX' GROUPS, WERE
NUMBERED TODAY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET AT ALL LATITUDES FOR THE PAST 24
HOURS, EXCEPT FOR AN ISOLATED INTERVAL OF UNSETTLED CONDITIONS AT
HIGH LATITUDES DURING THE PERIOD 30/1500-1800Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET FOR THE NEXT THREE DAYS, WITH THE CHANCE
FOR ISOLATED PERIODS OF UNSETTLED CONDITIONS THROUGHOUT THE FORECAST
PERIOD.
III. Event Probabilities 31 MAY to 02 JUN
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 30 MAY 075 Predicted 31 MAY-02 JUN 076/076/076 90 Day Mean 30 MAY 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 29 MAY 004/003 ESTIMATED AFR/AP 30 MAY 006/008 PREDICTED AFR/AP 31 MAY-02 JUN 005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 31 MAY to 02 JUN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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