Viewing archive of tisdag, 11 december 2007
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 2007 Dec 11 2204 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 345 publicerat klockan 2200Z på 11 Dec 2007IA. Analys av solfläcksgrupper och solaktivitet från 10-2100Z till 11-2100Z Solar activity was very low. Today's activity consisted
of a few, low level B-class flares. Region 978 (S07E01) is the only
sunspot region on the disk and is a 240 millionths Eai beta-gamma
group. The group has been relatively stable during the past 24
hours. There appears to be a new region rotating around east limb
near N28.
IB. Prognos för solaktivitet
Solar activity is expected to be very
low to low. There is a fair chance for an isolated C-class event
sometime during the next three days (12-14 December).
IIA. Sammanfattning av geofysisk aktivitet 10-2100Z till 11-2100Z
The geomagnetic field was mostly unsettled although there was an
active period from 10/2100Z-11/0000Z. Solar wind observations from
ACE show the onset of a co-rotating interaction region late
yesterday, followed by the onset of a high speed stream around
11/0000Z. Peak solar wind speeds were around 650 km/s. Nonetheless
the solar wind magnetic field has been relatively weak since
11/0130Z. The solar wind speed is currently declining slowly with
values around 550 km/s at forecast issue time.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be predominantly unsettled with a chance for an isolated
active period for 12 December. Conditions should be predominantly
quiet for 13-14 December.
III. Chans för solutbrott från 12 Dec till 14 Dec
| M-klass | 10% | 10% | 10% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observerad 11 Dec 093 Prognoserat 12 Dec-14 Dec 095/095/095 90 Day Mean 11 Dec 070
V. Geomagnetiskt A-index
Observerad Afr/Ap 10 Dec 005/008 Förväntat Afr/Ap 11 Dec 012/012 Prognoserat Afr/Ap 12 Dec-14 Dec 010/010-005/005-005/005
VI. Chanser för geomagnetisk aktivitet från 12 Dec till 14 Dec
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 15% | 15% |
| Små stormförhållanden | 15% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 15% | 15% |
| Små stormförhållanden | 15% | 05% | 05% |
| Svåra stormförhållanden | 10% | 01% | 01% |
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