Vaata reede, 18 mai 2012 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 2012 May 18 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 139 Välja antud 2200Z kuni 18 May 2012IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 17-2100Z kuni 18-2100Z Solar activity was at low levels. The largest flare
was a C3 at 18/0823Z from old Region 1476 (N10, L=180), which
rotated off the disk. A filament eruption was observed in SDO/AIA
304 imagery beginning at 18/0510Z near Region 1482 (N15W17). An
associated CME was observed in STEREO A COR 2 imagery beginning at
18/0709Z with an estimated plane-of-sky speed of approximately 482
km/s. The majority of the ejecta appeared to be slightly north of
the ecliptic plane, however a glancing blow is likely.
IB. Päikese aktiivsuse ennustus
Solar activity is expected to be at
low levels with a slight chance for an M-class flare all three days
(19 - 21 May).
IIA. Summaarne geofüüsikaline aktiivsus 17-2100Z kuni 18-2100Z
The geomagnetic field was at quiet to unsettled levels. The greater
than 100 MeV proton event at geosynchronous orbit that began at
17/0200Z, reached a maximum of 20.4 pfu at 17/0230Z and ended at
17/1725Z. The greater than 10 MeV proton event is currently
hovering close to the 10 pfu threshold (S1).
IIB. Geofüüsikalise aktiivsuse ennustus
The geomagnetic field is
expected to be at quiet to unsettled levels with isolated active
periods on day 1 (19 May) due to a possible shock arrival from the
17 May CME. Quiet to unsettled conditions are expected on day 2 (20
May). Mostly quiet conditions are expected on day 3 (21 May).
There is a slight chance for shock enhancement of the greater than
10 MeV protons above 10 pfu on day 1.
III. Sündmuste tõenäosus 19 Maykuni 21 May
| Klass M | 10% | 10% | 10% |
| Klass X | 01% | 01% | 01% |
| Prooton | 20% | 05% | 01% |
| PCAF | green | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 18 May 132 Prognoositud 19 May-21 May 135/135/130 90 päeva keskmine 18 May 115
V. Geomagneetiline A-indeks
Vaadeldud Afr/Ap 17 May 005/004 Hinnanguline Afr/Ap 18 May 008/008 Prognoositud Afr/Ap 19 May-21 May 009/010-008/008-006/005
VI. Geomagnetilised aktiivsuse tõenäosused 19 May kuni 21 May
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 25% | 10% | 05% |
| Väike torm | 15% | 05% | 01% |
| Suur-tõsine torm | 05% | 01% | 01% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 30% | 15% | 10% |
| Väike torm | 20% | 10% | 05% |
| Suur-tõsine torm | 05% | 01% | 01% |
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