Viewing archive of Saturday, 26 August 2000
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 2000 Aug 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 239 Issued at 2200Z on 26 AUG 2000IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z SOLAR ACTIVITY WAS LOW. SEVERAL LOW C-CLASS EVENTS
OCCURRED DURING THE PERIOD. A FILAMENT DISAPPEARED BETWEEN
26/0101-1123Z NEAR N26W25. THE SOHO/LASCO SPACECRAFT OBSERVED A CME
STARTING AROUND 26/1754Z IN THE NE QUADRANT WHICH APPEARS TO BE
ORIGINATING FROM THE BACKSIDE OF THE SUN
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
FOR THE FORECAST PERIOD. AN ISOLATED CHANCE OF AN M-CLASS EVENT IS
POSSIBLE FROM REGION 9144 (N25E02) AND REGION 9143 (S19E46).
IIA. GEOPHYSICAL ACTIVITY SUMMARY 25/2100Z TO 26/2100Z:
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED THROUGH THE PERIOD.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS.
III. Event Probabilities 27 AUG to 29 AUG
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 26 AUG 137 Predicted 27 AUG-29 AUG 140/145/150 90 Day Mean 26 AUG 181
V. Geomagnetic A Indices
OBSERVED AFR/AP 25 AUG 003/007 ESTIMATED AFR/AP 26 AUG 006/008 PREDICTED AFR/AP 27 AUG-29 AUG 008/010-008/012-010/010
VI. Geomagnetic Activity Probabilities 27 AUG to 29 AUG
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 25% |
| Minor storm | 10% | 10% | 15% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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