Viewing archive of torsdag, 26 maj 2011
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 2011 May 26 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 146 publicerat klockan 2200Z på 26 May 2011IA. Analys av solfläcksgrupper och solaktivitet från 25-2100Z till 26-2100Z Solar activity was low. A fast emerging flux region
was numbered today as Region 1223 (S15E14). This region produced
two C-class events as it evolved. The first was a C1 at 25/2103Z
then followed by a second C1 at 25/2158Z. It is configured as a Cso
group with a beta magnetic classification.
IB. Prognos för solaktivitet
Solar activity is expected to be very
low to low with a chance for a C-class event.
IIA. Sammanfattning av geofysisk aktivitet 25-2100Z till 26-2100Z
The geomagnetic field was mainly quiet with an active period reported
at 25/1800Z at mid-latitudes. Observations from the ACE spacecraft
indicated a possible co-rotating interaction region (CIR) at around
25/1330Z. Solar wind speed increased from around 340 to 390 km/s
and density jumped to 6 p/cc. Interplanetary magnetic field changes
included an increase in Bt to +7 nT, while Bz dipped to -6 nT.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be mostly unsettled with isolated active periods, and
isolated minor storms possible at high-latitudes, for the next three
days (27-29 May). Activity is expected due to a recurrent coronal
hole high speed stream. In addition, a disappearing filament
observed at 25/0801Z may possibly disturb the field on day two (28
May).
III. Chans för solutbrott från 27 May till 29 May
| M-klass | 01% | 01% | 01% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 26 May 083 Prognoserat 27 May-29 May 085/085/085 90 Day Mean 26 May 108
V. Geomagnetiskt A-index
Observerad Afr/Ap 25 May 002/004 Förväntat Afr/Ap 26 May 005/007 Prognoserat Afr/Ap 27 May-29 May 010/010-015/015-010/012
VI. Chanser för geomagnetisk aktivitet från 27 May till 29 May
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 25% | 20% |
| Små stormförhållanden | 05% | 10% | 05% |
| Svåra stormförhållanden | 01% | 05% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 35% | 30% |
| Små stormförhållanden | 10% | 15% | 10% |
| Svåra stormförhållanden | 05% | 05% | 05% |
All times in UTC
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