Viewing archive of Tuesday, 6 May 2008
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 2008 May 06 2203 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 2008IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z Solar activity was very low. No flares occurred and
the visible disk was spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
The geomagnetic field was predominately at quiet to unsettled levels
with isolated active periods observed between 06/0000-0900Z. Solar
wind velocities, as measured at the ACE satellite, decreased to
about 550 km/s beginning at about 06/0800Z from an earlier high of
approximately 650 km/s at 05/2300Z. The greater than 2 MeV electron
flux at geosynchronous orbit reached high levels again today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels with a chance for
isolated active periods on day 1 (07 May) due to the high speed
stream. By days 2 and 3 (08 and 09 May), geomagnetic conditions are
expected to be mostly quiet as the high speed stream abates.
III. Event Probabilities 07 May to 09 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 06 May 067 Predicted 07 May-09 May 068/068/068 90 Day Mean 06 May 071
V. Geomagnetic A Indices
Observed Afr/Ap 05 May 008/011 Estimated Afr/Ap 06 May 010/010 Predicted Afr/Ap 07 May-09 May 008/008-005/005-005/008
VI. Geomagnetic Activity Probabilities 07 May to 09 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 10% | 10% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 05% | 01% | 01% |
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