Viewing archive of fredag, 9 april 2004
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 2004 Apr 09 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 100 publicerat klockan 2200Z på 09 Apr 2004IA. Analys av solfläcksgrupper och solaktivitet från 08-2100Z till 09-2100Z Solar activity continued at low levels. Region 588
(S15W26) produced the only activity of note this period - a C2 flare
at 09/2040Z. This region underwent considerable decay in the past 24
hours, however, it still maintains a reverse polarity beta magnetic
configuration. This is now the only region with visible sunspots.
The remainder of the disk and limb was quiet.
IB. Prognos för solaktivitet
Solar activity is expected to be very
low to low. Region 588 is in decay but maintains potential for
isolated C-class activity.
IIA. Sammanfattning av geofysisk aktivitet 08-2100Z till 09-2100Z
The geomagnetic field ranged from quiet to minor storming. The
interplanetary shock associated with the 6 April CME impacted the
ACE spacecraft at 09/0147Z. Solar wind speed increased from 450 km/s
to near 570 km/s, and the IMF Bz component turned southward for some
short periods following the shock arrival. The storm was short-lived
with active to minor storm levels ending by 09/0900Z. The greater
than 2 MeV electron flux at geosynchronous orbit reached high levels
today.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to range from quiet to minor storm levels. The CME
associated with the C7 flare on 08/1017Z is expected to impact the
geomagnetic field late on 10 April. In response, active to minor
storm conditions are expected on 10 and 11 April. Quiet to unsettled
levels with isolated active periods are expected on 12 April.
III. Chans för solutbrott från 10 Apr till 12 Apr
| M-klass | 05% | 05% | 10% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 09 Apr 090 Prognoserat 10 Apr-12 Apr 090/095/100 90 Day Mean 09 Apr 110
V. Geomagnetiskt A-index
Observerad Afr/Ap 08 Apr 016/016 Förväntat Afr/Ap 09 Apr 015/018 Prognoserat Afr/Ap 10 Apr-12 Apr 020/025-020/025-010/015
VI. Chanser för geomagnetisk aktivitet från 10 Apr till 12 Apr
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 40% | 25% |
| Små stormförhållanden | 30% | 30% | 05% |
| Svåra stormförhållanden | 15% | 15% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 45% | 45% | 30% |
| Små stormförhållanden | 35% | 35% | 10% |
| Svåra stormförhållanden | 20% | 20% | 05% |
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