Viewing archive of fredag, 4 april 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 Apr 04 2203 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 095 publicerat klockan 2200Z på 04 Apr 2008IA. Analys av solfläcksgrupper och solaktivitet från 03-2100Z till 04-2100Z Solar activity was very low. Spotless plage Region 989
(S11W54) produced isolated B-class subflares. No new regions were
numbered.
IB. Prognos för solaktivitet
Solar activity is expected to be very
low to low. There is a fair chance for an isolated C-class flare
from Region 989.
IIA. Sammanfattning av geofysisk aktivitet 03-2100Z till 04-2100Z
Geomagnetic field activity was at quiet to active levels. Field
activity increased to active levels during 04/1800 - 2100Z due to
increased solar wind velocities and IMF magnitude combined with
periods of southward IMF Bz. ACE signatures indicated Earth entered
the co-rotating interaction region between slow and fast solar wind
flows. Velocities increased to 507 km/sec near the close of the
summary period. The greater than 2 MeV electron flux at
geosynchronous orbit was high during most of the period.
IIB. Prognos för geofysisk aktivitet
Geomagnetic field activity is
expected to be at active levels during days 1 - 2 (05 - 06 April)
with minor to major storm periods at high latitudes due to coronal
hole effects. Field activity is expected to decrease to unsettled
levels on day 3 (07 April) with active to minor storm periods at
high latitudes as coronal hole effects decrease.
III. Chans för solutbrott från 05 Apr till 07 Apr
| M-klass | 01% | 01% | 01% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 04 Apr 073 Prognoserat 05 Apr-07 Apr 070/070/070 90 Day Mean 04 Apr 073
V. Geomagnetiskt A-index
Observerad Afr/Ap 03 Apr 002/002 Förväntat Afr/Ap 04 Apr 007/010 Prognoserat Afr/Ap 05 Apr-07 Apr 015/015-012/015-010/012
VI. Chanser för geomagnetisk aktivitet från 05 Apr till 07 Apr
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 30% | 25% |
| Små stormförhållanden | 10% | 10% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 50% | 50% | 30% |
| Små stormförhållanden | 25% | 25% | 10% |
| Svåra stormförhållanden | 05% | 05% | 01% |
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