Vaata pühapäev, 29 mai 2011 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 2011 May 29 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 149 Välja antud 2200Z kuni 29 May 2011IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 28-2100Z kuni 29-2100Z Solar activity was moderate. At 29/1033Z, a
long-duration M1/1F flare occurred from Region 1126 (S21E54). The
flare was accompanied by a Type II (554 km/s shock velocity) radio
emission and a CME was later visible in both SOHO/LASCO and STEREO
COR2 imagery. The CME speed was estimated at 550 km/s using
plane-of-sky measurements. The CME is not expected to be
geoeffective, based on its origin. Region 1126 grew in area and
spot count over the past 24 hours. Two magnetically simple new
regions, 1127 (S19E69) and 1128 (N17E67), were numbered.
IB. Päikese aktiivsuse ennustus
Solar activity is expected to be low
to moderate. More C-class events are expected and there is a
continued chance of an M-class event.
IIA. Summaarne geofüüsikaline aktiivsus 28-2100Z kuni 29-2100Z
The geomagnetic field ranged from unsettled to minor storm levels.
Solar wind speed rose above 500 km/s early in the period and ranged
between 700-800 km/s for the remainder. The Bz component of the
interplanetary magnetic field fluctuated between +7 and -9 nT. At
the same time the wind speed increased, temperature increased,
density decreased and the Phi angle became negative. These
observations were consistent with a geoeffective coronal hole high
speed stream. The greater than 2 MeV electron flux at geosynchronous
orbit reached high levels during the period.
IIB. Geofüüsikalise aktiivsuse ennustus
The goemagnetic field is
expected to decline from predominantly unsettled to active levels on
day 1 (30 May), to quiet to unsettled levels on days 2 and 3 (31 May
- 01 Jun) as the coronal hole high speed stream wanes. There
remains a chance for isolated minor storm periods at high latitudes
on day 1.
III. Sündmuste tõenäosus 30 Maykuni 01 Jun
| Klass M | 40% | 40% | 40% |
| Klass X | 05% | 05% | 05% |
| Prooton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 29 May 111 Prognoositud 30 May-01 Jun 110/110/110 90 päeva keskmine 29 May 108
V. Geomagneetiline A-indeks
Vaadeldud Afr/Ap 28 May 032/040 Hinnanguline Afr/Ap 29 May 025/043 Prognoositud Afr/Ap 30 May-01 Jun 015/020-010/012-005/010
VI. Geomagnetilised aktiivsuse tõenäosused 30 May kuni 01 Jun
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 25% | 10% | 05% |
| Väike torm | 10% | 05% | 01% |
| Suur-tõsine torm | 01% | 01% | 01% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 35% | 20% | 05% |
| Väike torm | 20% | 10% | 01% |
| Suur-tõsine torm | 10% | 05% | 01% |
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