Viewing archive of Thursday, 8 February 2007
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 2007 Feb 08 2202 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 2007 IA. Analysis of Solar Active Regions and Activity from 07/2100Z to 08/2100Z: Solar activity was at very low levels. No significant activity occurred today. Region 941 (S07W61) underwent little change during the period and is currently the only spotted region on the visible disk.IB. Solar Activity Forecast
Solar activity is expected to remain
at very low levels.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic field was at quiet to unsettled levels. The greater
than 2 MeV electron flux at geosynchronous orbit reached high levels
today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels on 09 and 10 February.
A recurrent high speed coronal hole stream is expected to become
geoeffective late on 11 February. Active to minor storm conditions
are expected with the onset of the coronal hole.
III. Event Probabilities 09 Feb to 11 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 08 Feb 078 Predicted 09 Feb-11 Feb 080/083/083 90 Day Mean 08 Feb 084
V. Geomagnetic A Indices
Observed Afr/Ap 07 Feb 008/010 Estimated Afr/Ap 08 Feb 005/005 Predicted Afr/Ap 09 Feb-11 Feb 005/005-005/005-012/020
VI. Geomagnetic Activity Probabilities 09 Feb to 11 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 25% |
| Minor storm | 01% | 01% | 10% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 40% |
| Minor storm | 05% | 05% | 20% |
| Major-severe storm | 01% | 01% | 15% |
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