Viewing archive of torsdag, 12 september 2002

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 2002 Sep 12 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 255 publicerat klockan 2200Z på 12 Sep 2002

IA. Analys av solfläcksgrupper och solaktivitet från 11-2100Z till 12-2100Z

Solar activity fell to low levels. The largest event of the period was a C4/Sf flare at 12/0018 UTC from Region 107 (N11E16). Region 105 (S08E16) produced several lesser C-class flares, including an apparent one in progress at the end of the period. This region remains the largest on the visible disk. It's easternmost spots still retain a beta-gamma-delta magnetic configuration, while the western spot group appears to have lost some complexity. Region 107 continues in a pattern of slow growth and frequent flare production. Three new regions were numbered today, all relatively small and simply structured at present.
IB. Prognos för solaktivitet
Solar activity is expected to be low to moderate for the next three days. M-class activity appears possible from Regions 105 and 107.
IIA. Sammanfattning av geofysisk aktivitet 11-2100Z till 12-2100Z
The geomagnetic field was mainly unsettled to active. One isolated quiet period was observed at mid-latitudes. Coronal hole high speed stream effects continued to be the main source of activity.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is expected to be quiet to active during the first day of the forecast period, with a gradual reduction towards quiet to unsettled conditions thereafter. Greater than 2 MeV electron flux at geosynchronous orbit may reach high levels during the period.
III. Chans för solutbrott från 13 Sep till 15 Sep
M-klass50%50%50%
X-klass05%05%05%
Proton05%05%05%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observerad       12 Sep 212
  Prognoserat   13 Sep-15 Sep  215/220/225
  90 Day Mean        12 Sep 174
V. Geomagnetiskt A-index
  Observerad Afr/Ap 11 Sep  016/028
  Förväntat     Afr/Ap 12 Sep  013/015
  Prognoserat    Afr/Ap 13 Sep-15 Sep  012/012-012/012-008/012
VI. Chanser för geomagnetisk aktivitet från 13 Sep till 15 Sep
A. Medelhöga breddgrader
Aktivt25%25%20%
Små stormförhållanden05%05%01%
Svåra stormförhållanden01%01%01%
B. Höga breddgrader
Aktivt30%30%25%
Små stormförhållanden05%05%05%
Svåra stormförhållanden01%01%01%

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