Viewing archive of torsdag, 4 september 2008
Solaktivitetsrapport
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.
Rapport för sol- och geofysisk aktivitet 2008 Sep 04 2201 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 248 publicerat klockan 2200Z på 04 Sep 2008IA. Analys av solfläcksgrupper och solaktivitet från 03-2100Z till 04-2100Z Solar activity was very low. No flares occurred during
the past 24 hours. The solar disk continues to be spotless.
IB. Prognos för solaktivitet
Solar activity is expected to be very
low.
IIA. Sammanfattning av geofysisk aktivitet 03-2100Z till 04-2100Z
The geomagnetic field was initially quiet to unsettled, but activity
increased to minor to major storm levels from 0000-0600Z. Active
levels prevailed from 0600-1500Z, after which conditions decreased
to unsettled levels. The activity was driven by a prolonged period
of southward Bz (about -10 nT) occurring together with elevated
solar wind speeds. Solar wind velocity continued to rise during the
past 24 hours with day-end values near 600 km/s. The solar wind
signatures are generally consistent with a high speed stream from a
coronal hole. The greater than 2 MeV electron flux at geosynchronous
orbit reached high levels during the past 24 hours.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be unsettled to active for the first day (05 September)
as the high speed wind stream is expected to continue. Conditions
should gradually decline to predominantly unsettled for the second
day (06 September) and quiet to unsettled for the third day (07
September).
III. Chans för solutbrott från 05 Sep till 07 Sep
| M-klass | 01% | 01% | 01% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observerad 04 Sep 066 Prognoserat 05 Sep-07 Sep 066/066/066 90 Day Mean 04 Sep 066
V. Geomagnetiskt A-index
Observerad Afr/Ap 03 Sep 007/007 Förväntat Afr/Ap 04 Sep 020/020 Prognoserat Afr/Ap 05 Sep-07 Sep 015/020-010/015-005/008
VI. Chanser för geomagnetisk aktivitet från 05 Sep till 07 Sep
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 50% | 25% | 15% |
| Små stormförhållanden | 25% | 15% | 05% |
| Svåra stormförhållanden | 10% | 05% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 50% | 30% | 20% |
| Små stormförhållanden | 30% | 20% | 10% |
| Svåra stormförhållanden | 15% | 10% | 05% |
All times in UTC
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