Viewing archive of Thursday, 9 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 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 282 Issued at 2200Z on 09 OCT 1997IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z SOLAR ACTIVITY WAS VERY LOW. REGION 8092 (N25E28)
PRODUCED THE DAY'S LARGEST EVENT, A B9/0F WITH TYPE II SWEEP AT
1202Z. THE REGION IS STILL A SIMPLE BIPOLE WITH JUST 4 SUNSPOTS. NEW
REGION 8093 (N32E41) EMERGED ON THE DISK.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
THE GEOMAGNETIC FIELD WAS AT ACTIVE TO MINOR STORM LEVELS DURING
LOCAL NIGHTTIMES, AS SUBSTORMS CONTINUED. MOSTLY UNSETTLED
CONDITIONS WERE SEEN DURING DAYLIGHT HOURS. THE GREATER THAN 2 MEV
ELECTRON FLUX REACHED HIGH LEVELS LATE IN THE PERIOD.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED TO ACTIVE THE NEXT 24 HOURS. SUBSTORM
EFFECTS ARE LIKELY FOR THE NEXT DAY. A CORONAL MASS EJECTION
REPORTED ON OCTOBER 07 MAY HAVE SOME IMPACT ON THE FIELD IN THE NEXT
24-48 HOURS, ALTHOUGH ACTIVITY BEYOND THE ACTIVE LEVEL IS NOT
ANTICIPATED.
III. Event Probabilities 10 OCT to 12 OCT
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 09 OCT 084 Predicted 10 OCT-12 OCT 085/085/080 90 Day Mean 09 OCT 084
V. Geomagnetic A Indices
OBSERVED AFR/AP 08 OCT 012/014 ESTIMATED AFR/AP 09 OCT 017/020 PREDICTED AFR/AP 10 OCT-12 OCT 015/020-015/015-015/015
VI. Geomagnetic Activity Probabilities 10 OCT to 12 OCT
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 50% | 40% | 40% |
| Minor storm | 20% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 60% | 50% | 50% |
| Minor storm | 25% | 20% | 20% |
| Major-severe storm | 10% | 05% | 05% |
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