Viewing archive of Sunday, 15 October 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 Oct 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 289 Issued at 2200Z on 15 Oct 2000IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity has been low. Region 9198 (S31E54) was
the most active, producing several C-class subfaint flares. Region
9194 (S12E23) exhibited some growth, but produced no flares. Two
filament disappearances were reported overnight, the largest being a
7-degree filament centered on N25W31. However, available SOHO/LASCO
and EIT data do not indicate any DSF-associated CME. A long
duration C3 flare at 15/0836UT was reported without optical
correlation, although EIT imagery suggests the likely source as
newly numbered Region 9199 (old 9169), located at N12E68.
IB. Solar Activity Forecast
Solar activity is expected to be
predominantly low for the next three days. A chance for isolated
moderate-level flare activity exists for regions 9194, 9198, and
possibly 9199.
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic field was at quiet to unsettled levels. Some
indications of weak high speed stream effects from a coronal hole
became evident during the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be predominantly quiet to unsettled. Isolated active
periods, and minor storm periods at higher latitudes, are possible
in association with the coronal hole effects through day one,
followed by reduced activity for days two and three.
III. Event Probabilities 16 Oct to 18 Oct
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Oct 161 Predicted 16 Oct-18 Oct 165/175/180 90 Day Mean 15 Oct 176
V. Geomagnetic A Indices
Observed Afr/Ap 14 Oct 027/042 Estimated Afr/Ap 15 Oct 007/012 Predicted Afr/Ap 16 Oct-18 Oct 015/018-012/015-010/010
VI. Geomagnetic Activity Probabilities 16 Oct to 18 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 25% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 30% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 05% | 01% | 01% |
All times in UTC
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