Viewing archive of środa, 29 października 2003

Raport aktywności słonecznej

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.
Raport aktywności słoneczno- geomagnetycznej 2003 Oct 29 2200 UTC
Przygotowane przez NOAA © SWPC i przetworzone przez SpaceWeatherLive.com

Połączenie raportów USAF/NOAA o słonecznej i geofizycznej aktywności

Numer SDF 302 wydany w 2200Z na 29 Oct 2003

IA. Analiza aktywności regionów słonecznych i aktywność od 28-2100Z do 29-2100Z

Solar activity was high. Region 486 (S17W09) has produced another major flare, an X10 flare at 29/2049Z. This very large flare was still in progress at the end of the period. Associated activity and the potential impact of this flare will be assessed during the next period. Region 486 also produced an M3 at 29/0511Z. This region with 2600 millionths of white light areal coverage is now the largest sunspot group of solar cycle 23. It maintains a strong and complex beta-gamma-delta configuration and is still growing. Region 488 (N08W18) is also a large, complex active region and now exceeds 1200 millionths in a beta-gamma-delta configuration. C-class activity and low M-class flares were observed in this region. The very large and active Region 484 (N01W81) is relatively quiet as it rotates around the west limb.
IB. Prognoza aktywności słonecznej
Solar activity is expected to continue at high levels. The very large and complex Region 486 will likely produce more major flare activity during its remaining 5-6 days on the visible disk. A major event is also possible from Region 488.
IIA. Podsumowanie aktywności geofizycznej 28-2100Z do 29-2100Z
The geomagnetic field ranged from unsettled to severe storming. The powerful CME from the X17/4b flare on 28/1110Z, impacted the Earth's magnetic field at 29/0613Z. The transit time for this CME was around 19 hours, making it one of the fastest on record. The sudden impulse measured 140 nT on the Boulder magnetometer. Strong southward IMF Bz initiated severe (K9) storming at middle and high latitudes in the 29/0600 - 0900Z period. Mostly northward Bz occurred from 29/0900 - 1800Z; however, major to severe storming persisted. A sharp southward turn in the Bz occurred at around 1800Z ending the period with K8-9 severe storming. A strong Forbush decrease (over 20%) is in progress. The large proton event and GLE that followed the X17 flare is now in decline. The greater than 10 MeV proton event that began on 28/1215Z, peaked at 29/0615Z at 29,500 pfu, making it the second largest greater than 10 MeV proton event this cycle (second only to the 31,700 pfu proton event in November 2001). The greater than 100 MeV proton event began at 28/1145Z, and peaked at 29/0015Z at 186 pfu. This proton event remains in progress.
IIB. Prognoza aktywności geofizycznej
The geomagnetic field is expected to continue at severe storm levels through day one. The IMF Bz is now sustained southward at near -30 nT, resulting in severe storm levels. This condition is expected to persist through at least the first half of day one. A gradual decline to unsettled to minor storm levels is expected by day two. The potential geomagnetic impact from today's X10 flare will be assessed next period; predictions for days two and three will likely change considerably. The greater than 10 MeV proton event, currently in progress is expected to continue through day three. The greater than 100 MeV proton event will likely continue as high energy protons quickly stream in from the X10 flare that occurred late in the period.
III. Prawdopodobieństwa zdarzenia 30 Oct do 01 Nov
Klasa M90%90%90%
Klasa X50%50%50%
Proton99%99%75%
PCAFin progress
IV. Przepływ 10,7 cm z Penticton
  Zaobserwowano       29 Oct 279
  Przewidywane   30 Oct-01 Nov  275/265/260
  Średnia z 90 dni        29 Oct 126
V. Indeks geomagnetyczny A
  Zaobserwowano Afr/Ap 28 Oct  015/020
  Szacowane     Afr/Ap 29 Oct  120/150
  Przewidywane    Afr/Ap 30 Oct-01 Nov  080/100-020/025-010/010
VI. Prawdopodobieństwa aktywności geomagnetycznej 30 Oct do 01 Nov
A. Średnie szerokości geograficzne
Aktywne10%40%20%
Słaba burza20%20%10%
Bardzo znacząca burza70%05%05%
B. Wysokie szerokości geograficzne
Aktywne10%50%25%
Słaba burza10%30%10%
Bardzo znacząca burza80%10%01%

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