Het archief bekijken van dinsdag 24 april 2012
Activiteitenrapport
Bij elke genoemde zonnevlam in dit rapport werd een schaalfactor toegepast door het Space Weather Prediction Center (SWPC). Vanwege de SWPC-schaalfactor worden zonnevlammen 42% kleiner gerapporteerd dan voor de wetenschappelijke data. De schaalfactor werd verwijderd uit onze gearchiveerde zonnevlamdata om de werkelijke fysieke eenheden weer te geven.
Rapport van de zonne- en geofysische activiteit van 2012 Apr 24 2200 UTC
Opgemaakt door de NOAA © SWPC en verwerkt door Poollicht.beUSAF/NOAA rapport van de zonneactiviteit en geofysische activiteit
SDF Nummer 115 gepubliceerd omstreeks 2200Z op 24 Apr 2012
IA. Analyse van de actieve zonneregio's en zonneactiviteit van 23-2100Z tot 24-2100Z
Solar activity has been at low levels for the past 24
hours with multiple C-class x-ray events. A C3 flare was observed at
24/0745Z off the east limb from new Region 1467 (N14E72). Associated
with this event, were both a type II radio sweep (estimated shock
velocity of 1029 km/s) and a non-Earth directed CME. Two other new
regions were numbered today, Region 1468 (N09E12) which rapidly
emerged on the disk and Region 1469 (S21E68), which rotated onto the
disk. The remaining active regions were stable and quiet today,
except for Region 1465 (S19W12). Region 1465 showed a consolidation
of both leader and follower spot groups into one cluster and is now
classified as a beta-gamma-delta.
IB. Voorspelling zonneactiviteit
Solar activity is expected to be at
low levels with a slight chance for M-class activity for the next
three days (25 - 27 April).
IIA. Samenvatting geofysische activiteit 23-2100Z tot 24-2100Z
The geomagnetic field ranged from quiet to major storm levels during
the past 24 hours due to continued CME effects and the arrival of a
coronal hole high speed stream (CH HSS). Early in the period,
measurements from the ACE spacecraft showed extensive southward
(negative) periods of the Bz component of the IMF. Even though solar
wind speeds remained well below nominal levels, these periods drove
the majority of the geomagnetic activity. Around 24/0200Z, CH HSS
characteristics were observed by the ACE spacecraft with solar wind
density dropping off as the solar wind speed increased. At the time
of this report, solar wind speeds had increased from around 350 km/s
to around 630 km/s.
IIB. Voorspelling geofysische activiteit
The geomagnetic field is
expected to be at quiet to active levels on day one (25 April) as
the effects of a CH HSS continue. An increase to active with a
chance for isolated minor storm periods is expected on day two (26
April) as the CME from 23 April is expected to become geoeffective.
Quiet to unsettled levels are expected on day three (27 April) as
effects of the CME wane.
III. Kans zonnevlammen van 25 Apr tot 27 Apr
Klasse M | 20% | 20% | 20% |
Klasse X | 01% | 01% | 01% |
Proton | 01% | 01% | 01% |
PCAF | green
|
IV. Penticton 10.7 cm Flux
Geobserveerd 24 Apr 134
Voorspeld 25 Apr-27 Apr 130/130/125
90 dagen gemiddelde 24 Apr 112
V. Geomagnetische A index
Geobserveerd Afr/Ap 23 Apr 021/030
Geraamd Afr/Ap 24 Apr 021/031
Voorspeld Afr/Ap 25 Apr-27 Apr 012/018-017/022-011/015
VI. Kansen op geomagnetische activiteit van 25 Apr tot 27 Apr
A. Gemiddelde breedtegraad |
Actief | 25% | 40% | 25% |
Kleine storm | 10% | 20% | 10% |
Zware-ernstige stormcondities | 01% | 05% | 01% |
B. Hoge breedtegraad |
Actief | 45% | 50% | 40% |
Kleine storm | 25% | 30% | 25% |
Zware-ernstige stormcondities | 15% | 15% | 10% |
Alle tijden in UTC
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