Vaata esmaspäev, 20 mai 2002 arhiivi

Päikese aktiivsuse aruanne

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.
Päikese ja geofüüsikalise aktiivsuse aruanne 2002 May 20 2200 UTC
Valminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga

Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne

SDF number 140 Välja antud 2200Z kuni 20 May 2002

IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 19-2100Z kuni 20-2100Z

Solar activity was high. Region 9961 (S22E62) produced two M-class flares and one X-class flare during the past 24 hours. The X-flare was an X2/2n at 1527 UTC and was impulsive. Nonetheless this flare was associated with a narrow-width CME from the southeast limb. The first M-flare was an M4 at 1029 UTC and the second was an M5 at 1053 UTC. Both of these events were impulsive and were attributed to 9961 based on SOHO/EIT data. Region 9961 appears to be a compact, magnetically complex group which has at least a gamma classification, and possibly a magnetic delta. Region 9957 (N09E22) continues to be the largest group on the disk and has a delta configuration in a compact collection of spots. A partial halo CME was observed in C2 at 19/2026 UTC and was centered over the southwest limb. EIT images at the same time confirmed a front-side source from the southwest part of the disk.
IB. Päikese aktiivsuse ennustus
Solar activity is expected to be mostly moderate, but there is a chance for an additional major flare event from either of Region 9961 or 9957.
IIA. Summaarne geofüüsikaline aktiivsus 19-2100Z kuni 20-2100Z
The geomagnetic field was mostly quiet to unsettled during the past 24 hours. There was an isolated active period from 1500-1800 UTC. An interval of enhanced solar wind flow passed the ACE solar wind spacecraft beginning at 0257 UTC and lasted about 10 hours. The Bz magnetic field component was mostly negative with typical values between -5 nT and -10 nT. The onset of the this flow at Earth caused a sudden impulse at 0342 UTC, which measured 22 nT on the Boulder magnetometer.
IIB. Geofüüsikalise aktiivsuse ennustus
The geomagnetic field should be mostly unsettled tomorrow and quiet to unsettled on the second day. Activity on the third day is expected increase slightly to unsettled with some isolated active periods due to possible effects from today's partial halo CME that began at 19/2026 UTC.
III. Sündmuste tõenäosus 21 Maykuni 23 May
Klass M80%80%80%
Klass X20%20%20%
Prooton15%15%15%
PCAFgreen
IV. Pikklaine 10.7 cm kiirgus
  Vaadeldud       20 May 171
  Prognoositud   21 May-23 May  170/170/165
  90 päeva keskmine        20 May 184
V. Geomagneetiline A-indeks
  Vaadeldud Afr/Ap 19 May  008/018
  Hinnanguline     Afr/Ap 20 May  010/015
  Prognoositud    Afr/Ap 21 May-23 May  008/010-005/008-012/015
VI. Geomagnetilised aktiivsuse tõenäosused 21 May kuni 23 May
A. Keskmistel laiuskraadidel
Aktiivne20%20%25%
Väike torm10%10%15%
Suur-tõsine torm05%05%10%
B. Kõrgetel laiuskraadidel
Aktiivne20%20%25%
Väike torm10%10%20%
Suur-tõsine torm05%05%15%

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