Viewing archive of Wednesday, 9 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 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 040 Issued at 2200Z on 09 FEB 2000IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z SOLAR ACTIVITY WAS LOW. THE MOST INTERESTING EVENT OF
THE PAST DAY WAS A LONG DURATION C7/2F FLARE IN SPOTLESS REGION 8853
(S13W40) AT 09/2006UT. REGION 8858 (N27E01) CONTINUED TO DECAY
SLOWLY. THE LARGEST FLARE IN THIS REGION SINCE YESTERDAY WAS A C6/SN
AT 09/0051UT. REGION 8861 (N07W68) CONTINUED TO GROW BUT ONLY
PRODUCED MINOR C-CLASS ACTIVITY. NEW REGIONS 8867 (S14E32) AND 8868
(S24E33) EMERGED ON THE DISK.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. REGIONS 8858 AND 8861 ARE THE MOST LIKELY CANDIDATES
FOR M-CLASS ACTIVITY.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
THE GEOMAGNETIC FIELD RANGED FROM QUIET TO ACTIVE LEVELS. ACTIVE
CONDITIONS OCCURRED AT MANY LOCATIONS FROM 09/1200-1800UT. 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 10 FEB to 12 FEB
| Class M | 50% | 50% | 50% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 09 FEB 199 Predicted 10 FEB-12 FEB 178/178/176 90 Day Mean 09 FEB 172
V. Geomagnetic A Indices
OBSERVED AFR/AP 08 FEB 010/012 ESTIMATED AFR/AP 09 FEB 010/010 PREDICTED AFR/AP 10 FEB-12 FEB 010/010-005/005-005/005
VI. Geomagnetic Activity Probabilities 10 FEB to 12 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% |
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