Vaata laupäev, 17 aprill 1999 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 1999 Apr 17 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 107 Välja antud 2200Z kuni 17 APR 1999IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 16-2100Z kuni 17-2100Z SOLAR ACTIVITY WAS VERY LOW. TWO NEW REGIONS WERE
ASSIGNED TODAY: REGION 8518 NEAR S16E66 AND REGION 8519 NEAR N17W33.
TWO FILAMENTS ERUPTED DURING THE PERIOD: AN 8 DEGREE FILAMENT NEAR
S19W08 BETWEEN 16/2144UT AND 17/1116UT AND A 20 DEGREE FILAMENT NEAR
S32W15 BETWEEN 17/1640-1830UT.
IB. Päikese aktiivsuse ennustus
SOLAR ACTIVITY IS EXPECTED TO BE LOW
FOR THE NEXT THREE DAYS.
IIA. Summaarne geofüüsikaline aktiivsus 16-2100Z kuni 17-2100Z
THE GEOMAGNETIC FIELD RANGED FROM UNSETTLED TO MAJOR STORM LEVELS. A
GEOMAGNETIC DISTURBANCE THAT BEGAN WITH A SUDDEN IMPULSE YESTERDAY
AT 16/1126Z INTENSIFIED INTO A GEOMAGNETIC STORM. MID-LATITUDES WERE
AT MINOR TO MAJOR STORM LEVELS ON THE 17TH FROM 00-09UT AND HIGH
LATITUDES WERE AT MAJOR TO SEVERE STORM LEVELS DURING THE SAME TIME
INTERVAL. THE DISTURBANCE SUBSIDED AFTER 0900Z WITH PREDOMINANTLY
UNSETTLED CONDITIONS PREVAILING FROM 1200 TO THE END OF THE DAY.
IIB. Geofüüsikalise aktiivsuse ennustus
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY UNSETTLED FOR THE NEXT 24 HOURS, AND IS
EXPECTED TO BE QUIET TO UNSETTLED FOR THE SECOND AND THIRD DAYS.
III. Sündmuste tõenäosus 18 APRkuni 20 APR
| Klass M | 15% | 15% | 15% |
| Klass X | 01% | 01% | 01% |
| Prooton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 17 APR 116 Prognoositud 18 APR-20 APR 114/112/110 90 päeva keskmine 17 APR 134
V. Geomagneetiline A-indeks
OBSERVED AFR/AP 16 APR 013/014 ESTIMATED AFR/AP 17 APR 035/045 PREDICTED AFR/AP 18 APR-20 APR 010/010-005/010-010/012
VI. Geomagnetilised aktiivsuse tõenäosused 18 APR kuni 20 APR
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 20% | 15% | 15% |
| Väike torm | 10% | 10% | 10% |
| Suur-tõsine torm | 05% | 01% | 01% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 35% | 25% | 20% |
| Väike torm | 15% | 10% | 10% |
| Suur-tõsine torm | 10% | 05% | 05% |
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