Viewing archive of Friday, 20 June 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 Jun 20 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 172 Issued at 2200Z on 20 Jun 2008IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity was at very low levels. Region 999
(S02E06) has remained stable over the summary period.
IB. Solar Activity Forecast
Solar activity is expected to remain
at very low levels.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic field was at mostly quiet to unsettled levels. There
was an isolated period of active conditions observed from 0300 -
0600Z on 20 June, due to sustained southward Bz and elevated wind
speeds. The greater than 2 MeV electron flux at geosynchronous
orbit reached high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at predominately quiet levels for the forecast period
(21 to 23 June).
III. Event Probabilities 21 Jun to 23 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Jun 065 Predicted 21 Jun-23 Jun 065/065/065 90 Day Mean 20 Jun 070
V. Geomagnetic A Indices
Observed Afr/Ap 19 Jun 005/006 Estimated Afr/Ap 20 Jun 007/008 Predicted Afr/Ap 21 Jun-23 Jun 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 Jun to 23 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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