Viewing archive of fredag, 7 maj 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 May 07 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 128 publicerat klockan 2200Z på 07 May 2004IA. Analys av solfläcksgrupper och solaktivitet från 06-2100Z till 07-2100Z Solar activity was low. Region 605 (S12W45) produced a
C1/Sf flare at 07/1403Z. A rather faint CME was visible on LASCO
imagery following this flare. Region 605 continues to gradually
decay and now exists as a simple alpha spot group. New Region 606
(S09E81) rotated into view on the east limb during this period. Limb
proximity makes it difficult to accurately assess true size and
complexity; however, a CME was observed to erupt from this location
at 07/1050Z. An associated Type II radio sweep (739 km/s) also
occurred. No other significant activity was noted.
IB. Prognos för solaktivitet
Solar activity is expected to be low.
New Region 606 possesses the best potential for C-class activity.
IIA. Sammanfattning av geofysisk aktivitet 06-2100Z till 07-2100Z
The geomagnetic field was quiet to active. The high speed coronal
hole stream that became geoeffective on 05 May continues to buffet
the geomagnetic field. Frequent southward IMF Bz oscillations over
the last 24 hours are responsible for the most disturbed periods.
The high speed stream does appear to be subsiding: solar wind speed
decreased to below 500 km/s late in the period. 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 be quiet to active. Isolated active periods are possible
early on 08 May as the coronal hole high speed stream subsides. Weak
transient material from today's C1 flare and CME may produce
occasional unsettled to active periods on 10 May.
III. Chans för solutbrott från 08 May till 10 May
| M-klass | 10% | 10% | 10% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 07 May 085 Prognoserat 08 May-10 May 085/090/095 90 Day Mean 07 May 106
V. Geomagnetiskt A-index
Observerad Afr/Ap 06 May 010/008 Förväntat Afr/Ap 07 May 015/018 Prognoserat Afr/Ap 08 May-10 May 008/008-005/008-010/015
VI. Chanser för geomagnetisk aktivitet från 08 May till 10 May
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 15% | 25% |
| Små stormförhållanden | 05% | 05% | 10% |
| Svåra stormförhållanden | 01% | 01% | 05% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 20% | 30% |
| Små stormförhållanden | 10% | 05% | 15% |
| Svåra stormförhållanden | 05% | 01% | 05% |
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