Vaata neljapäev, 16 september 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 Sep 16 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 259 Välja antud 2200Z kuni 16 SEP 1999IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 15-2100Z kuni 16-2100Z SOLAR ACTIVITY WAS LOW. THE LARGEST EVENT THIS PERIOD
WAS A C7/SF FROM REGION 8700 (N14E31). OCCASIONAL MINOR C-CLASS
SUBFLARES WERE ALSO OBSERVED IN REGIONS 8699 (N22W39) AND 8692
(S26W41). AN IMPRESSIVE DARK, 50 DEGREE FILAMENT ERUPTED FROM
NORTH-CENTER DISK. THIS FILAMENT WAS ACTIVE FOR MOST OF THE PAST 24
HOURS. ELEVATION WAS FIRST DETECTED AT AROUND 16/1230UT WITH THE
TOTAL ERUPTION OF THIS TWO-PART FILAMENT OCCURRING AT 16/1620UT. THE
EVENT WAS OBSERVED ON BOTH GROUND AND SPACE-BASED INSTRUMENTS WITH A
LARGE CME OBSERVED BY LASCO.
IB. Päikese aktiivsuse ennustus
SOLAR ACTIVITY IS EXPECTED TO REMAIN
LOW. SEVERAL EXISTING SUNSPOT REGIONS ARE CAPABLE OF PRODUCING
C-CLASS ACTIVITY WITH AN ISOLATED CHANCE FOR A LOW M-CLASS.
IIA. Summaarne geofüüsikaline aktiivsus 15-2100Z kuni 16-2100Z
THE GEOMAGNETIC FIELD WAS AT QUIET TO MINOR STORM LEVELS WITH
ISOLATED MAJOR STORMING PERIODS AT HIGH LATITUDES. A SUSTAINED
PERIOD OF SOUTHWARD BZ AND A 600KM/S SOLAR WIND SPEED FOLLOWED A
SUDDEN IMPULSE (SI) OBSERVED AT 15/2019UT.
IIB. Geofüüsikalise aktiivsuse ennustus
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO ACTIVE WITH OCCASIONAL MINOR STORMING MOSTLY
AT HIGH LATITUDES. DAY TWO SHOULD BE LESS ACTIVE AS THE HIGH SPEED
STREAM SUBSIDES, EXPECT QUIET TO OCCASIONAL ACTIVE. WE MAY SEE THE
EFFECTS OF TODAY'S LARGE DSF ON DAY 3, LOOK FOR ACTIVE TO MINOR
STORM CONDITIONS POSSIBLE BY LATE DAY 3.
III. Sündmuste tõenäosus 17 SEPkuni 19 SEP
| Klass M | 15% | 15% | 15% |
| Klass X | 05% | 05% | 05% |
| Prooton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 16 SEP 158 Prognoositud 17 SEP-19 SEP 160/165/170 90 päeva keskmine 16 SEP 164
V. Geomagneetiline A-indeks
OBSERVED AFR/AP 15 SEP 021/032 ESTIMATED AFR/AP 16 SEP 025/030 PREDICTED AFR/AP 17 SEP-19 SEP 020/025-015/020-012/012
VI. Geomagnetilised aktiivsuse tõenäosused 17 SEP kuni 19 SEP
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 50% | 40% | 50% |
| Väike torm | 30% | 20% | 30% |
| Suur-tõsine torm | 10% | 05% | 10% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 40% | 40% | 50% |
| Väike torm | 50% | 25% | 30% |
| Suur-tõsine torm | 10% | 05% | 10% |
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