Viewing archive of Thursday, 6 May 2004
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 2004 May 06 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 127 Issued at 2200Z on 06 May 2004IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z Solar activity was very low. Region 605 (S11W30) now
exhibits a simple beta configuration having decayed in both size
and magnetic complexity. Region 604 (S19E10), the only other sunspot
group on the visible disk, was quiet.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low.
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
The geomagnetic field was quiet to unsettled. The high speed solar
wind stream that became geoeffective yesterday remains in effect.
Solar wind speed was approximately 550 km/s, but IMF Bz was
predominantly northward.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled. The high speed coronal hole
stream in progress now may produce isolated active periods through
07 May.
III. Event Probabilities 07 May to 09 May
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 06 May 086 Predicted 07 May-09 May 085/090/095 90 Day Mean 06 May 106
V. Geomagnetic A Indices
Observed Afr/Ap 05 May 012/013 Estimated Afr/Ap 06 May 010/010 Predicted Afr/Ap 07 May-09 May 008/010-005/008-005/008
VI. Geomagnetic Activity Probabilities 07 May to 09 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 20% |
| Minor storm | 15% | 10% | 10% |
| Major-severe storm | 05% | 01% | 01% |
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