Viewing archive of Friday, 31 October 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 Oct 31 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 304 Issued at 2200Z on 31 OCT 1997IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z SOLAR ACTIVITY WAS VERY LOW. OF THE FEW FLARES THAT
OCCURRED, THE LARGEST WAS A B4/OF FROM REGION 8100 (S20E15) AT
1938Z. NEWLY ASSIGNED REGION 8101 (S19W70) EMERGED MIDWAY THROUGH
THE PERIOD. THE LIMBS WERE QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
REGION 8100 IS STILL THOUGHT TO BE CAPABLE OF ISOLATED C-CLASS
ACTIVITY.
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO MILDLY UNSETTLED. THE GREATER THAN
2 MEV ELECTRON FLUX AT GOES ATTAINED HIGH LEVELS AROUND 1500Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO PERSIST AT QUIET TO SLIGHTLY UNSETTLED LEVELS THROUGHOUT
THE PERIOD.
III. Event Probabilities 01 NOV to 03 NOV
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 31 OCT 091 Predicted 01 NOV-03 NOV 090/095/095 90 Day Mean 31 OCT 087
V. Geomagnetic A Indices
OBSERVED AFR/AP 30 OCT 005/010 ESTIMATED AFR/AP 31 OCT 005/008 PREDICTED AFR/AP 01 NOV-03 NOV 005/008-005/008-010/008
VI. Geomagnetic Activity Probabilities 01 NOV to 03 NOV
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 20% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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