Viewing archive of onsdag, 7 september 2011
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 2011 Sep 07 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 250 publicerat klockan 2200Z på 07 Sep 2011IA. Analys av solfläcksgrupper och solaktivitet från 06-2100Z till 07-2100Z Solar activity was high. Region 1283 (N14W32) produced
another major flare, an X2/2b at 06/2220Z. The X2 flare was
associated with Types II and IV radio sweeps, a 740 sfu Tenflare and
an Earth-directed halo CME. The CME had an estimated speed of around
800 km/s, based on STEREO-A COR2 images, with the bulk of mass
directed north of the ecliptic plane. Region 1283 maintained a weak
magnetic delta in the north-central portion of the group and was
classified as a Dai-type with a beta-gamma-delta magnetic
configuration. No new regions were numbered.
IB. Prognos för solaktivitet
Solar activity is expected to be
moderate during the period (08 - 10 September) with a chance for
another X-class flare from Region 1283.
IIA. Sammanfattning av geofysisk aktivitet 06-2100Z till 07-2100Z
Geomagnetic field activity was at mostly quiet levels. A proton flux
enhancement at greater than 100 MeV and greater than 10 MeV began
around 06/2300Z at geosynchronous orbit in the wake of the X2 flare
mentioned above. The greater than 2 MeV electron flux at
geosynchronous orbit reached high levels during the period.
IIB. Prognos för geofysisk aktivitet
Geomagnetic activity is
expected to be at mostly quiet levels on day 1 (08 September). An
increase to unsettled levels, with a chance for active levels, is
expected late on day 2 (09 September) due to a CME arrival. A
further increase to unsettled to active levels, with a chance for
minor storm levels, is expected on day 3 (10 September) as the CME
passage continues. There will be a chance for a greater than 10 MeV
proton event at geosynchronous orbit during the period.
III. Chans för solutbrott från 08 Sep till 10 Sep
| M-klass | 75% | 75% | 75% |
| X-klass | 30% | 30% | 30% |
| Proton | 30% | 30% | 30% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observerad 07 Sep 113 Prognoserat 08 Sep-10 Sep 110/105/100 90 Day Mean 07 Sep 098
V. Geomagnetiskt A-index
Observerad Afr/Ap 06 Sep 005/007 Förväntat Afr/Ap 07 Sep 005/005 Prognoserat Afr/Ap 08 Sep-10 Sep 005/005-010/005-020/018
VI. Chanser för geomagnetisk aktivitet från 08 Sep till 10 Sep
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 10% | 25% | 30% |
| Små stormförhållanden | 01% | 10% | 25% |
| Svåra stormförhållanden | 01% | 01% | 05% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 15% | 30% | 40% |
| Små stormförhållanden | 01% | 15% | 30% |
| Svåra stormförhållanden | 01% | 01% | 10% |
All times in UTC
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