Viewing archive of Saturday, 7 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 07 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 159 Issued at 2200Z on 07 Jun 2008IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity was very low. No flares were detected.
The visible disk remained spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
Geomagnetic field activity ranged from quiet to unsettled levels. ACE
solar wind data indicated the unsettled levels were due to increased
solar wind velocities and IMF changes associated with a solar sector
boundary crossing at around 07/0900Z (away to toward orientation).
Velocities reached a peak of 551 km/sec at 07/1604Z, then gradually
decreased. IMF changes included increased Bt (peak reading 10 nT at
07/0856Z) and mostly southward Bz after 07/0530Z (minimum -7 nT at
07/0652Z).
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be at mostly quiet levels through the period (08 - 10
June).
III. Event Probabilities 08 Jun to 10 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Jun 066 Predicted 08 Jun-10 Jun 068/068/068 90 Day Mean 07 Jun 070
V. Geomagnetic A Indices
Observed Afr/Ap 06 Jun 007/008 Estimated Afr/Ap 07 Jun 010/010 Predicted Afr/Ap 08 Jun-10 Jun 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 08 Jun to 10 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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