Viewing archive of Tuesday, 8 February 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 Feb 08 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 039 Issued at 2200Z on 08 FEB 2000IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z SOLAR ACTIVITY WAS MODERATE. REGION 8858 (N28E14)
PRODUCED AN M1/1B AT 08/0900UT WHICH INCLUDED A TYPE II RADIO SWEEP
AND OTHER MINOR RADIO OUTPUT. THIS SUNSPOT GROUP HAS DECAYED A
LITTLE SINCE YESTERDAY. REGION 8861 (N07W53) CONTINUED TO DEVELOP
AND PRODUCED A FEW C-CLASS FLARES. THE LARGEST WAS A C4/1F AT
07/2328UT. FOUR NEW REGIONS WERE NUMBERED - 8863 (S14E70), 8864
(N44W16), 8865 (S12E22), AND 8866 (N18E64).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. SIGNIFICANT FLARE ACTIVITY IS MOST LIKELY IN REGIONS
8858 AND 8861.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV
ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT WAS HIGH.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 09 FEB to 11 FEB
| Class M | 50% | 50% | 50% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 08 FEB 174 Predicted 09 FEB-11 FEB 176/178/178 90 Day Mean 08 FEB 172
V. Geomagnetic A Indices
OBSERVED AFR/AP 07 FEB 019/025 ESTIMATED AFR/AP 08 FEB 010/015 PREDICTED AFR/AP 09 FEB-11 FEB 010/010-010/005-005/005
VI. Geomagnetic Activity Probabilities 09 FEB to 11 FEB
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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