Viewing archive of Sunday, 7 May 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 May 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 128 Issued at 2200Z on 07 MAY 2000IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z SOLAR ACTIVITY REMAINED AT A VERY LOW LEVEL. ONLY MINOR
B-CLASS ENHANCEMENTS AND SUBFLARES WERE OBSERVED. SEVERAL SMALL
REGIONS EMERGED. THE DISK REGIONS WERE ALSO SMALL AND EXHIBITED
MINOR EVOLUTION.
IB. Solar Activity Forecast
SOLAR ACTIVITY SHOULD BE AT A VERY LOW
TO LOW LEVEL FOR THE NEXT THREE DAYS. CURRENT REGIONS ARE CAPABLE OF
PRODUCING ONLY ISOLATED C-CLASS EVENTS. REGIONS NEARING THE EAST
LIMB MAY RAISE C-CLASS FLARE PRODUCTION SLIGHTLY.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
THE GEOMAGNETIC FIELD WAS PREDOMINANTLY QUIET. BRIEF UNSETTLED
CONDITIONS WERE EXPERIENCED IN THE 07/0300-0600Z PERIOD. SOLAR WIND
VELOCITY SLOWLY DECLINED TO BELOW 400 KM/S NEAR THE END OF THE
PERIOD. ENERGETIC (GT 10 MEV) PROTON FLUXES REMAINED SLIGHTLY
ELEVATED ABOVE BACKGROUND DURING THE PERIOD BUT WERE DECLINING.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD SHOULD BE
PREDOMINANTLY QUIET FOR THE NEXT THREE DAYS. ISOLATED UNSETTLED
PERIODS ARE POSSIBLE. NO RECENT CORONAL MASS EJECTIONS ARE EXPECTED
TO IMPACT THE EARTH.
III. Event Probabilities 08 MAY to 10 MAY
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 07 MAY 131 Predicted 08 MAY-10 MAY 133/136/138 90 Day Mean 07 MAY 187
V. Geomagnetic A Indices
OBSERVED AFR/AP 06 MAY 008/012 ESTIMATED AFR/AP 07 MAY 008/010 PREDICTED AFR/AP 08 MAY-10 MAY 007/010-007/008-007/008
VI. Geomagnetic Activity Probabilities 08 MAY to 10 MAY
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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