Vaata neljapäev, 24 veebruar 2000 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 2000 Feb 24 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 055 Välja antud 2200Z kuni 24 FEB 2000IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 23-2100Z kuni 24-2100Z SOLAR ACTIVITY WAS MODERATE. AN OPTICALLY UNCORRELATED
M1 FLARE OCCURRED AT 24/0111Z. THERE ARE SOME TENTATIVE INDICATIONS
THAT THIS EVENT ORIGINATED FROM NEW REGION 8889 NEAR N19E67. THIS
REGION IS A MODERATE SIZE D CLASS GROUP BUT FORESHORTENING MAY BE
MASKING ITS TRUE SIZE. A TOTAL OF THREE OTHER REGIONS IN THE EASTERN
HEMISPHERE BECAME VISIBLE BUT, AT THIS TIME, NONE APPEARED LARGE OR
COMPLEX. THERE MAY BE ONE OR MORE REGIONS STILL BEHIND THE EAST
LIMB.
IB. Päikese aktiivsuse ennustus
SOLAR ACTIVITY SHOULD BE PREDOMINANTLY
MODERATE FOR THE NEXT THREE DAYS. THE POSSIBILITY OF A MAJOR FLARE
FROM NEAR EAST LIMB REGIONS IS A POSSIBILITY. ONCE THESE LONGITUDES
BECOME VISIBLE, A BETTER ASSESSMENT WILL BE POSSIBLE.
IIA. Summaarne geofüüsikaline aktiivsus 23-2100Z kuni 24-2100Z
THE GEOMAGNETIC FIELD BEGAN THE PERIOD AT QUIET LEVELS AND WAS AT
ACTIVE TO MINOR STORM LEVELS AFTER 24/0300Z. SOLAR WIND VELOCITY
INCREASED TO SLIGHTLY OVER 800 KM/S AND DENSITY DECLINED TO LOW
LEVELS INDICATING THE EARTH IS IMMERSED IN THE PREVIOUSLY FORECAST
CORONAL HOLE STREAM. THE SOURCE HOLE ON THE SUN IS SLIGHTLY MORE
ELONGATED THAN LAST SOLAR ROTATION.
IIB. Geofüüsikalise aktiivsuse ennustus
THE GEOMAGNETIC FIELD SHOULD BE
PREDOMINANTLY UNSETTLED TO ACTIVE FOR 25-26 FEB. OCCASIONAL PERIODS
OF MINOR STORMING ARE LIKELY DURING THAT PERIOD. THIS CORONAL HOLE
RELATED DISTURBANCE SHOULD BEGIN TO EBB ON 27 FEB WHEN QUIET TO
SLIGHTLY ACTIVE CONDITIONS ARE EXPECTED. ENERGETIC ELECTRON FLUXES
AT GEOSYNCHRONOUS ORBIT SHOULD BECOME ELEVATED TO HIGH LEVELS ON 25
FEB.
III. Sündmuste tõenäosus 25 FEBkuni 27 FEB
| Klass M | 75% | 75% | 75% |
| Klass X | 10% | 10% | 10% |
| Prooton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 24 FEB 192 Prognoositud 25 FEB-27 FEB 195/197/200 90 päeva keskmine 24 FEB 164
V. Geomagneetiline A-indeks
OBSERVED AFR/AP 23 FEB 008/009 ESTIMATED AFR/AP 24 FEB 024/023 PREDICTED AFR/AP 25 FEB-27 FEB 025/020-018/018-012/015
VI. Geomagnetilised aktiivsuse tõenäosused 25 FEB kuni 27 FEB
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 40% | 50% | 30% |
| Väike torm | 35% | 25% | 15% |
| Suur-tõsine torm | 05% | 05% | 01% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 40% | 50% | 30% |
| Väike torm | 40% | 25% | 15% |
| Suur-tõsine torm | 10% | 05% | 01% |
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