Viewing archive of Saturday, 21 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 21 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 173 Issued at 2200Z on 21 Jun 2008IA. Analysis of Solar Active Regions and Activity from 20-2100Z to 21-2100Z Solar activity was at very low levels. Region 999
(S02W08) remained stable over the period.
IB. Solar Activity Forecast
Solar activity is expected to remain
at very low levels.
IIA. Geophysical Activity Summary 20-2100Z to 21-2100Z
The geomagnetic field was at mostly quiet levels. Solar wind
velocities gradually decayed from a peak of near 600 km/s at the
beginning of the period to about 500 km/s at forecast issue time.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at mostly quiet levels for the forecast period (22 to
24 June).
III. Event Probabilities 22 Jun to 24 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 21 Jun 065 Predicted 22 Jun-24 Jun 065/065/065 90 Day Mean 21 Jun 070
V. Geomagnetic A Indices
Observed Afr/Ap 20 Jun 008/011 Estimated Afr/Ap 21 Jun 007/005 Predicted Afr/Ap 22 Jun-24 Jun 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 22 Jun to 24 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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