Vaata laupäev, 17 august 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 Aug 17 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 229 Välja antud 2200Z kuni 17 Aug 2002IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 16-2100Z kuni 17-2100Z Solar activity was at moderate levels. Region 69
(S07W03) has produced three M-class events, the largest an M3.4/Sf
at 17/2051 UTC. Other activity from this region has been a number
of C-class events and numerous sub-flares. Region 69 continues to
grow in area and spot count at 1950 millionths and 58 spots, and is
exhibiting multiple magnetic delta configurations within the same
penumbra. Region 79 (S21E18) has shown growth particularly in spot
count. Two new regions were numbered today: Region 82 (N21E06) and
Region 83 (S18E67).
IB. Päikese aktiivsuse ennustus
Solar activity is expected to be
moderate to high. Region 69 has the potential to produce a major
event.
IIA. Summaarne geofüüsikaline aktiivsus 16-2100Z kuni 17-2100Z
The geomagnetic field was at quiet to unsettled condition with one
three-hour period of isolated active levels at 17/0900 UTC. Greater
than 2 MeV electron flux at geosynchronous orbit exceeded event
threshold at 17/1405 UTC, reached a peak value of 1350 pfu at
17/1710 UTC and decreased below threshold levels at 17/1845 UTC.
NASA/ACE data indicates that the solar wind velocities decreased
throughout the day from a peak velocity of 600 km/s to around 450
km/s due to waning coronal hole effects.
IIB. Geofüüsikalise aktiivsuse ennustus
The geomagnetic field is
expected to be at minor to major storm levels on day one of the
forecast period. A shock arrival from the M5/full halo CME event on
16 August is expected early on day one. The geomagnetic field for
day two and three of the forecast period is expected to be at quiet
to unsettled levels.
III. Sündmuste tõenäosus 18 Augkuni 20 Aug
| Klass M | 75% | 75% | 75% |
| Klass X | 20% | 20% | 20% |
| Prooton | 15% | 15% | 15% |
| PCAF | yellow | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 17 Aug 227 Prognoositud 18 Aug-20 Aug 230/235/235 90 päeva keskmine 17 Aug 167
V. Geomagneetiline A-indeks
Vaadeldud Afr/Ap 16 Aug 008/017 Hinnanguline Afr/Ap 17 Aug 012/012 Prognoositud Afr/Ap 18 Aug-20 Aug 050/070-018/020-012/015
VI. Geomagnetilised aktiivsuse tõenäosused 18 Aug kuni 20 Aug
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 40% | 30% | 25% |
| Väike torm | 30% | 15% | 10% |
| Suur-tõsine torm | 20% | 05% | 05% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 40% | 30% | 25% |
| Väike torm | 30% | 15% | 10% |
| Suur-tõsine torm | 20% | 10% | 05% |
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