Viewing archive of onsdag, 17 oktober 2012
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 2012 Oct 17 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 291 publicerat klockan 2200Z på 17 Oct 2012IA. Analys av solfläcksgrupper och solaktivitet från 16-2100Z till 17-2100Z Solar activity was low. A new, unnumbered region on
the northeast limb produced numerous C-class events during the
period, the largest of which was a C7 flare at 17/0802Z. The other
regions on the disk were stable or decaying.
IB. Prognos för solaktivitet
Solar activity is expected to be low
with a chance for an isolated M-class event for during the next
three days (18 - 20 Oct). Region 1591 (N07E07) and the new region
on the limb are the only regions that show any potential for M-class
flares.
IIA. Sammanfattning av geofysisk aktivitet 16-2100Z till 17-2100Z
The geomagnetic field was quiet during the past 24 hours. The solar
wind velocity measured at the ACE spacecraft increased from around
350 km/s to around 500 km/s at 16/2300Z. The solar wind then slowly
decreased from around 500 km/s to the end-of-day value around 440
km/s. These signatures are consistent with a high speed stream from
a negative polarity coronal hole. The greater than 2 MeV electron
flux at geosynchronous orbit was at high levels throughout the
period.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be quiet to unsettled for the next three days (18 - 20
Oct).
III. Chans för solutbrott från 18 Oct till 20 Oct
| M-klass | 10% | 10% | 10% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 17 Oct 135 Prognoserat 18 Oct-20 Oct 135/135/135 90 Day Mean 17 Oct 118
V. Geomagnetiskt A-index
Observerad Afr/Ap 16 Oct 005/005 Förväntat Afr/Ap 17 Oct 006/007 Prognoserat Afr/Ap 18 Oct-20 Oct 007/008-007/008-006/005
VI. Chanser för geomagnetisk aktivitet från 18 Oct till 20 Oct
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 05% | 05% | 05% |
| Små stormförhållanden | 01% | 01% | 01% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 15% | 15% | 15% |
| Små stormförhållanden | 15% | 15% | 10% |
| Svåra stormförhållanden | 05% | 10% | 05% |
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