Viewing archive of Friday, 29 August 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 Aug 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 241 Issued at 2200Z on 29 AUG 1997IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z SOLAR ACTIVITY WAS LOW. THE DAY'S LARGEST EVENT WAS AN
UNCORRELATED C4 AT 0428Z. REGION 8076 (N28E11) GENERATED A C1/0F AT
1730Z. THIS REGION CONTINUED TO GROW IN WHITE LIGHT, RETAINING A
DEGREE OF MAGNETIC COMPLEXITY.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
REGION 8076 SHOULD CONTINUE TO PRODUCE OCCASIONAL C-CLASS EVENTS.
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
THE GEOMAGNETIC FIELD WAS PREDOMINANTLY QUIET TO UNSETTLED. NIGHTTIME
SUBSTORMS BROUGHT EPISODES OF ACTIVE TO MINOR STORM LEVELS TO BOTH
MIDDLE AND HIGH GEOMAGNETIC LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE GENERALLY QUIET TO UNSETTLED. SUBSTORMS SHOULD
CONTINUE, BRINGING SHORT-LIVED ACTIVE TO MINOR STORM LEVELS THE NEXT
FEW DAYS.
III. Event Probabilities 30 AUG to 01 SEP
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 29 AUG 092 Predicted 30 AUG-01 SEP 093/093/092 90 Day Mean 29 AUG 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 28 AUG 016/016 ESTIMATED AFR/AP 29 AUG 015/013 PREDICTED AFR/AP 30 AUG-01 SEP 010/015-010/008-005/005
VI. Geomagnetic Activity Probabilities 30 AUG to 01 SEP
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 10% |
| Minor storm | 10% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 25% | 15% |
| Minor storm | 20% | 15% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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