Viewing archive of torsdag, 28 april 2005
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 2005 Apr 28 2200 UTC# Prepared jointly by the U.S. Dept. of Commerce, NOAA, #Space Environment Center and the U.S. Air Force. #
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 118 publicerat klockan 2200Z på 28 Apr 2005IA. Analys av solfläcksgrupper och solaktivitet från 27-2100Z till 28-2100Z Solar activity increased to low levels. Region 756
(S06E29) produced a C3 x-ray event that occurred at 28/0236Z. White
light analysis indicates that the sunspot area coverage is now at
1030 millionths. Magnetic analysis shows a solid delta structure
seen as the appendage in the southern portion of the large spot. A
second weaker delta structure is seen near the central trailing
portion of the large spot. A newly formed DAO beta spot group was
numbered as Region 757 (S05E03) today.
IB. Prognos för solaktivitet
Solar activity is expected to be at
low levels. Region 756 has the potential of producing an isolated
M-class flare.
IIA. Sammanfattning av geofysisk aktivitet 27-2100Z till 28-2100Z
The geomagnetic field was at quiet levels today.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be at quiet to unsettled levels for 29 and 30 April.
Active to minor storm conditions are possible on 01 May due to the
onset of a recurrent high speed coronal stream.
III. Chans för solutbrott från 29 Apr till 01 May
| M-klass | 30% | 30% | 30% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 28 Apr 098 Prognoserat 29 Apr-01 May 100/100/100 90 Day Mean 28 Apr 090
V. Geomagnetiskt A-index
Observerad Afr/Ap 27 Apr 001/004 Förväntat Afr/Ap 28 Apr 001/005 Prognoserat Afr/Ap 29 Apr-01 May 004/008-004/008-015/020
VI. Chanser för geomagnetisk aktivitet från 29 Apr till 01 May
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 10% | 10% | 30% |
| Små stormförhållanden | 01% | 01% | 10% |
| Svåra stormförhållanden | 01% | 01% | 05% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 20% | 35% |
| Små stormförhållanden | 05% | 05% | 15% |
| Svåra stormförhållanden | 01% | 01% | 10% |
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