Viewing archive of tisdag, 17 april 2012
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 2012 Apr 17 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 108 publicerat klockan 2200Z på 17 Apr 2012IA. Analys av solfläcksgrupper och solaktivitet från 16-2100Z till 17-2100Z Solar activity has been low for the past 24 hours. A
long duration C1 flare was observed from new Region 1461 (N13E66) at
17/0809Z. An associated CME became visible in LASCO C2 imagery at
17/0800Z but does not appear to be Earth-directed. A filament
eruption occurred at approximately 17/1330Z near N24W40. The
associated CME was first visible in LASCO C2 imagery at 17/1424Z but
is not expected to be geoeffective. New Region 1460 (N16E26) was
also numbered overnight and is considered a Dso-beta type spot
group. Region 1459 (S15E40) has shown a significant decrease in
areal coverage and is now a Dao-beta type spot group.
IB. Prognos för solaktivitet
Solar activity is expected to be low
with a slight chance for an M-class flare for the next three days
(18-20 April).
IIA. Sammanfattning av geofysisk aktivitet 16-2100Z till 17-2100Z
The geomagnetic field was mostly quiet during the past 24 hours. The
greater than 2 MeV electron flux at geosynchronous orbit reached
high levels during the period.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be mostly quiet on days one and two (18-19 April). Quiet
to unsettled conditions are expected with a chance for isolated
active periods on day three (20 April) due to a recurrent Solar
Sector Boundary Crossing (SSBC).
III. Chans för solutbrott från 18 Apr till 20 Apr
| M-klass | 20% | 15% | 10% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 17 Apr 114 Prognoserat 18 Apr-20 Apr 115/115/110 90 Day Mean 17 Apr 112
V. Geomagnetiskt A-index
Observerad Afr/Ap 16 Apr 005/005 Förväntat Afr/Ap 17 Apr 006/008 Prognoserat Afr/Ap 18 Apr-20 Apr 004/005-004/005-007/008
VI. Chanser för geomagnetisk aktivitet från 18 Apr till 20 Apr
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 10% | 10% | 25% |
| Små stormförhållanden | 01% | 01% | 10% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 15% | 15% | 15% |
| Små stormförhållanden | 15% | 15% | 30% |
| Svåra stormförhållanden | 10% | 10% | 30% |
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Rymdvädersfakta
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