Viewing archive of tisdag, 18 september 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 Sep 18 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 262 publicerat klockan 2200Z på 18 Sep 2012IA. Analys av solfläcksgrupper och solaktivitet från 17-2100Z till 18-2100Z Solar activity has been at low levels for the past 24
hours. New Region 1575 (N07E75) was responsible for the only C-class
event today, which was a C1 x-ray event at 1009Z. This region was
also responsible for the two C-class events observed yesterday. When
Region 1575 rotated onto the visible disk, it had a beta magnetic
classification. No Earth directed CMEs were detected in the past 24
hours.
IB. Prognos för solaktivitet
Solar activity is expected to be at
low levels with a slight chance for M-class events for the next
three days (19-21 September).
IIA. Sammanfattning av geofysisk aktivitet 17-2100Z till 18-2100Z
The geomagnetic field has been at quiet to unsettled levels for the
past 24 hours. Solar wind speeds, as measured by the ACE spacecraft,
indicated nominal background speeds with sustained periods of the
negative Bz component of the IMF.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to remain at quiet to unsettled levels for the next two
days (19-20 September). A slight increase to quiet to unsettled
levels with chance for active periods is expected on day three (21
September) as a coronal hole high speed stream moves into a
geoeffective position.
III. Chans för solutbrott från 19 Sep till 21 Sep
| M-klass | 10% | 10% | 10% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 18 Sep 104 Prognoserat 19 Sep-21 Sep 105/110/110 90 Day Mean 18 Sep 122
V. Geomagnetiskt A-index
Observerad Afr/Ap 17 Sep 006/004 Förväntat Afr/Ap 18 Sep 009/009 Prognoserat Afr/Ap 19 Sep-21 Sep 008/010-009/010-008/012
VI. Chanser för geomagnetisk aktivitet från 19 Sep till 21 Sep
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 15% | 15% | 25% |
| Små stormförhållanden | 05% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 15% | 15% | 20% |
| Små stormförhållanden | 30% | 30% | 30% |
| Svåra stormförhållanden | 25% | 25% | 30% |
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