Viewing archive of torsdag, 1 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 01 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 244 publicerat klockan 2200Z på 01 Sep 2011IA. Analys av solfläcksgrupper och solaktivitet från 31-2100Z till 01-2100Z Solar activity was low. Region 1283 (N12E49) produced
two C2/Sf flares during the period, the first one at 01/1248Z and
the second one at 01/1822Z. The region exhibited trailer spot growth
and remained a beta magnetic configuration. Region 1282 (N25W26) had
intermediate spot decay between the leader and trailer, but some
growth in the leader section of the region. The remainder of the
regions were quiet and stable. No Earth-directed CMEs were detected
during the period.
IB. Prognos för solaktivitet
Solar activity is expected to be low
through the period (02 - 04 September) with a slight chance for
M-class activity.
IIA. Sammanfattning av geofysisk aktivitet 31-2100Z till 01-2100Z
The geomagnetic field was quiet. Solar wind speeds, as measured at
the ACE satellite, showed a steady decline from about 350 km/s to
end the period near 290 km/s. The Bz component of the interplanetary
magnetic field did not vary much beyond +/- 2 nT.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be at quiet levels during day one (02 September).
Activity is expected to increase to quiet to unsettled levels, with
isolated active periods, on days two and three (03 - 04 September).
This increase in activity is due to a recurrent coronal hole high
speed stream that is expected to rotate into a geoeffective
position.
III. Chans för solutbrott från 02 Sep till 04 Sep
| M-klass | 15% | 15% | 15% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observerad 01 Sep 112 Prognoserat 02 Sep-04 Sep 110/110/110 90 Day Mean 01 Sep 097
V. Geomagnetiskt A-index
Observerad Afr/Ap 31 Aug 001/002 Förväntat Afr/Ap 01 Sep 002/005 Prognoserat Afr/Ap 02 Sep-04 Sep 005/005-008/008-008/008
VI. Chanser för geomagnetisk aktivitet från 02 Sep till 04 Sep
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 10% | 20% | 20% |
| Små stormförhållanden | 01% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 15% | 25% | 25% |
| Små stormförhållanden | 01% | 10% | 10% |
| Svåra stormförhållanden | 01% | 01% | 01% |
All times in UTC
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