Vaata laupäev, 28 aprill 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 Apr 28 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 119 Välja antud 2200Z kuni 28 Apr 2012IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 27-2100Z kuni 28-2100Z Solar activity was at low levels due to single,
low-level C-class events from Regions 1461 (N10W89), 1466 (N12W51),
1467 (N12E18), 1469 (S19E14) and new Region 1470 (S17E61). New
Region 1471 (S23E70) was also numbered during the period. A 16
degree filament eruption was observed in SDO/AIA 304 imagery at
28/1045Z. During the period of the eruption, the SE to NW oriented
filament was centered near S32W33. LASCO/C2 imagery observed an
associated slow-moving, non-Earth directed CME lifting off the SW
limb at 28/1224Z.
IB. Päikese aktiivsuse ennustus
Solar activity is expected to be low
with a slight chance for M-class activity for the next three days
(29 April - 01 May).
IIA. Summaarne geofüüsikaline aktiivsus 27-2100Z kuni 28-2100Z
The geomagnetic field was at quiet to unsettled levels with an
isolated high latitude active period between 28/0900 - 1200Z.
Through the period, ACE solar wind velocities steadily decreased
from about 490 km/s to near 420km/s while the Bz component of the
interplanetary magnetic field was variable between +/-4 nT. The
greater than 2 MeV electron flux at geosynchronous orbit was at high
levels throughout the period.
IIB. Geofüüsikalise aktiivsuse ennustus
The geomagnetic field is
expected to be at predominately quiet levels for days one and two
(29 - 30 April). By day three (01 May), quiet to unsettled levels,
with isolated active periods, are expected as a coronal hole high
speed stream moves into a geoeffective position.
III. Sündmuste tõenäosus 29 Aprkuni 01 May
| Klass M | 20% | 20% | 20% |
| Klass X | 01% | 01% | 01% |
| Prooton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 28 Apr 121 Prognoositud 29 Apr-01 May 125/120/120 90 päeva keskmine 28 Apr 112
V. Geomagneetiline A-indeks
Vaadeldud Afr/Ap 27 Apr 007/008 Hinnanguline Afr/Ap 28 Apr 005/005 Prognoositud Afr/Ap 29 Apr-01 May 004/005-004/005-007/008
VI. Geomagnetilised aktiivsuse tõenäosused 29 Apr kuni 01 May
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 10% | 10% | 15% |
| Väike torm | 01% | 01% | 05% |
| Suur-tõsine torm | 01% | 01% | 01% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 10% | 10% | 20% |
| Väike torm | 01% | 01% | 05% |
| Suur-tõsine torm | 01% | 01% | 01% |
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