Het archief bekijken van donderdag 13 september 2001

Activiteitenrapport

Rapport van de zonne- en geofysische activiteit van 2001 Sep 13 2200 UTC
Opgemaakt door de NOAA © SWPC en verwerkt door Poollicht.be

USAF/NOAA rapport van de zonneactiviteit en geofysische activiteit

SDF Nummer 256 gepubliceerd omstreeks 2200Z op 13 Sep 2001

IA. Analyse van de actieve zonneregio's en zonneactiviteit van 12-2100Z tot 13-2100Z

Solar activity has been low, however there have been several C-class flares with associated Type II radio sweeps indicating potential CME activity. The largest event was a C9.6 x-ray flare at 12/2149 UTC. This event appeared to originate from Region 9606 (S17W79), per test imagery available from the GOES-12 SXI instrument, and was accompanied by a Type II sweep with estimated velocity of 747 km/s. Two additional impulsive events were also observed: A C7/Sn flare at 13/1602 UTC from Region 9610 (S13W18), with associated Type II sweep estimated velocity of 596 km/s, and, again per SXI imagery, a C5.8 x-ray event at 13/1951 UTC from Region 9607 (S16W51), with associated Type II sweep velocity of 771 km/s. Other C-class flare activity occurred in Regions 9616 (S10E55) and 9608 (S25W33). Two new regions were numbered today: 9618 (S21W26) and 9619 (N17E21).
IB. Voorspelling zonneactiviteit
Solar activity is expected to be moderate to high. Region 9608 remains very large in areal coverage and spot count, with appreciable magnetic complexity, and remains capable of producing a major flare. Regions 9610 and 9616 are also potential sources of M-class activity.
IIA. Samenvatting geofysische activiteit 12-2100Z tot 13-2100Z
The geomagnetic field was quiet to active. There were some indications in the ACE satellite data of a weak interplanetary shock passage at about 13/0100 UTC. Active geomagnetic conditions and an isolated period of minor storming at higher latitudes followed, and persisted for several hours until mainly unsettled conditions developed from about 13/1200 UTC onward. This disturbance is presumed to have originated from the CME activity of 9 September.
IIB. Voorspelling geofysische activiteit
The geomagnetic field is expected to be quiet to active for the next three days. Shock passages are expected from the DSF activity of 11 September, and the CME activity of the past two days, over the course of the forecast period. Isolated periods of minor storming at higher latitudes are possible.
III. Kans zonnevlammen van 14 Sep tot 16 Sep
Klasse M70%70%70%
Klasse X10%10%10%
Proton10%10%10%
PCAFyellow
IV. Penticton 10.7 cm Flux
  Geobserveerd       13 Sep 240
  Voorspelt   14 Sep-16 Sep  235/225/225
  90 Day Mean        13 Sep 164
V. Geomagnetische A index
  Geobserveerd Afr/Ap 12 Sep  009/013
  Verwacht     Afr/Ap 13 Sep  015/015
  Voorspelt    Afr/Ap 14 Sep-16 Sep  018/020-015/015-015/015
VI. Kansen geomagnetische activiteit van 14 Sep tot 16 Sep
A. Gemiddelde breedtegraad
Actief25%20%20%
Kleine stormcondities15%15%15%
Zware-ernstige stormcondities05%05%05%
B. Hoge breedtegraad
Actief30%25%25%
Kleine stormcondities20%15%15%
Zware-ernstige stormcondities05%05%05%

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Laatste X-klasse uitbarsting:10/09/2017X8.2
Laatste M-klasse uitbarsting:20/10/2017M1.0
Laatste geomagnetische storm:20/04/2020Kp5 (G1)
Aantal zonnevlekkenloze dagen in 2020:119
Huidig periode aantal zonnevlekkenloze dagen:27

Deze dag in de geschiedenis*

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