Vaata neljapäev, 27 september 2007 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 2007 Sep 27 2203 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 270 Välja antud 2200Z kuni 27 Sep 2007IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 26-2100Z kuni 27-2100Z Solar activity was very low. No flares occurred during
the past 24 hours.
IB. Päikese aktiivsuse ennustus
Solar activity is expected to be very
low.
IIA. Summaarne geofüüsikaline aktiivsus 26-2100Z kuni 27-2100Z
The geomagnetic field was initially quiet. However, a weak shock was
seen at ACE at 1054Z, followed by an increase in magnetic field
strength and density as well as a small increase in velocity. There
were some extended intervals of southward Bz and as a result there
was a period of minor to major storm level activity from 1500-1800Z.
Conditions declined to active to minor storm levels for remainder of
the period (1800-2100Z). Although the observations are not yet
conclusive the disturbance appears to be from a transient structure
in the solar wind, rather than from a recurrent structure. The
greater than 2 MeV electron flux at geosynchronous orbit reached
high levels during the past 24 hours.
IIB. Geofüüsikalise aktiivsuse ennustus
The geomagnetic field is
expected to be unsettled with occasional active periods for the
first day (28 September) due to the anticipated onset of a high
speed stream from a coronal hole. Activity should strengthen on the
second day (29 September) to predominantly active levels with a
chance for minor storm periods at high latitudes. Conditions should
decline to predominantly unsettled levels on the third day (30
September).
III. Sündmuste tõenäosus 28 Sepkuni 30 Sep
| Klass M | 01% | 01% | 01% |
| Klass X | 01% | 01% | 01% |
| Prooton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 27 Sep 067 Prognoositud 28 Sep-30 Sep 067/067/067 90 päeva keskmine 27 Sep 069
V. Geomagneetiline A-indeks
Vaadeldud Afr/Ap 26 Sep 002/003 Hinnanguline Afr/Ap 27 Sep 010/015 Prognoositud Afr/Ap 28 Sep-30 Sep 010/015-020/025-010/012
VI. Geomagnetilised aktiivsuse tõenäosused 28 Sep kuni 30 Sep
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 40% | 40% | 30% |
| Väike torm | 15% | 25% | 15% |
| Suur-tõsine torm | 05% | 10% | 05% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 45% | 45% | 35% |
| Väike torm | 20% | 25% | 20% |
| Suur-tõsine torm | 10% | 15% | 10% |
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