Viewing archive of lördag, 15 februari 2003

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 2003 Feb 15 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 046 publicerat klockan 2200Z på 15 Feb 2003

IA. Analys av solfläcksgrupper och solaktivitet från 14-2100Z till 15-2100Z

Solar activity remained at low levels. The largest flare during the period was a long duration C4.5 event from Region 276 (S14 L-160) that occurred at 15/0810Z. LASCO/C-2 imagery (first seen at 15/0930Z) depicted a resulting CME that may have a weak Earth-directed component. Another CME was observed by LASCO earlier in the period (first seen at 14/2206Z) that appears to have been the result of a filament eruption in the northeastern quadrant of the solar disk (centered at approximately N45E30). This CME may also be Earth-directed. There was further CME activity seen in LASCO imagery which appears to have been from back-sided source regions. With exception to the aforementioned, there were only a few minor B and Cl-class flares observed from the active solar regions during the interval. New Region 288 (N12E72) was newly assigned today.
IB. Prognos för solaktivitet
Solar activity is expected to be at low levels.
IIA. Sammanfattning av geofysisk aktivitet 14-2100Z till 15-2100Z
The geomagnetic field was at predominantly unsettled to active levels. An isolated period of quiet conditions were seen at mid-latitudes between 14/2100 and 2400Z. The greater than 2 MeV electron fluxes at geosynchronous orbit reached moderate levels today.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is expected to be at predominantly unsettled to active levels. Minor storm conditions are possible throughout the period due to the effects of a large recurrent coronal hole. Days two and three may experience further enhancements due to the CME activity seen today (IA)
III. Chans för solutbrott från 16 Feb till 18 Feb
M-klass15%10%05%
X-klass01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observerad       15 Feb 124
  Prognoserat   16 Feb-18 Feb  125/120/120
  90 Day Mean        15 Feb 148
V. Geomagnetiskt A-index
  Observerad Afr/Ap 14 Feb  016/019
  Förväntat     Afr/Ap 15 Feb  015/020
  Prognoserat    Afr/Ap 16 Feb-18 Feb  012/020-015/020-018/030
VI. Chanser för geomagnetisk aktivitet från 16 Feb till 18 Feb
A. Medelhöga breddgrader
Aktivt30%40%45%
Små stormförhållanden15%25%25%
Svåra stormförhållanden05%10%15%
B. Höga breddgrader
Aktivt40%40%30%
Små stormförhållanden30%30%40%
Svåra stormförhållanden15%15%25%

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