Vaata reede, 28 august 1998 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 1998 Aug 28 2200 UTCValminud NOAA © SWPC ja töödeldud SpaceWeatherLive.com-iga
Ühine USAF / NOAA päikese- ja geofüüsikaalase aktiivsuse aruanne
SDF number 240 Välja antud 2200Z kuni 28 AUG 1998IA. Päikese aktiivsete piirkondade ja päikeseaktiivsuse analüüs alates 27-2100Z kuni 28-2100Z SOLAR ACTIVITY HAS BEEN LOW. REGION 8307 (N32W39)
CONTINUES TO SIMPLIFY. IT APPEARS TO STILL BE CAPABLE OF PRODUCING
AN ISOLATED CLASS M EVENT. REGION 8319 (N19W15) CONTINUES TO GROW
AND SHOW SIGNS OF FURTHER DEVELOPMENT WITH AN ACTIVE ARCH-FILAMENT
SYSTEM EXTENDING THE LENGTH OF THE REGION. YOHKOH REPORTS THAT A
POTENTIAL-LIKE LOOP STRUCTURE IS WELL DEVELOPED. SMALL GROUPS OF
NEW SPOTS CONTINUE TO APPEAR ACROSS THE FACE OF THE VISIBLE DISK.
OLD REGION 8293 APPEARS TO BE RETURNING AT S21 ON THE EAST LIMB.
FILAMENTS HAVE DISAPPEARED IN THE SOUTH CENTRAL AREA OF THE DISK.
IB. Päikese aktiivsuse ennustus
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. FREQUENT FLARES CLASS C TO CLASS M ARE EXPECTED IN
REGION 8319 AND AN ISOLATED CLASS M FLARE MAY OCCUR IN REGION 8307.
IIA. Summaarne geofüüsikaline aktiivsus 27-2100Z kuni 28-2100Z
GEOPHYSICAL ACTIVITY HAS BEEN UNSETTLED TO ACTIVE. THE GEOMAGNETIC
STORM HAS DECLINED RAPIDLY AND K-INDICES OF 3 AND 4 ARE PREVALENT AT
MID-LATITUDE. THE REAL TIME SOLAR WIND DATA FROM ACE SHOWS A
REGULAR WAVE-LIKE STRUCTURE IN THE BZ COMPONENT WITH A PERIOD OF
ABOUT 30 MINUTES. THE STRUCTURE HAS BEEN QUIRE REGULAR FOR THE LAST
20 HOURS. THE ENERGETIC PARTICLES WITH ENERGY GREATER THAN 10 MEV
HAVE DECLINED AND ARE HOVERING AT ABOUT 10 PFU. AN END TO THE EVENT
IS LIKELY TO BE PRONOUNCED IN THE NEXT FEW HOURS. THE NEUTRON
MONITOR FLUXES HAVE RETURNED TO NEAR-NORMAL LEVELS. GREATER THAN 2
MEV ELECTRONS AT GOES ARE NOW EXCEEDING A FLUX OF 1.0 E4, A LEVEL 10
TIMES THE ALERT THRESHOLDS.
IIB. Geofüüsikalise aktiivsuse ennustus
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED TO ACTIVE FOR THE NEXT DAY OR SO. THE
DISAPPEARANCE OF FILAMENTS IN THE SOUTHERN CENTRAL PORTION OF THE
SUN MAY BE ASSOCIATED WITH CORONAL MASS EJECTIONS THAT COULD BRING
ENHANCED ACTIVITY TO EARTH ON AUGUST 30 AND 31.
III. Sündmuste tõenäosus 29 AUGkuni 31 AUG
| Klass M | 20% | 20% | 20% |
| Klass X | 05% | 05% | 05% |
| Prooton | 25% | 25% | 25% |
| PCAF | GREEN | ||
IV. Pikklaine 10.7 cm kiirgus
Vaadeldud 28 AUG 139 Prognoositud 29 AUG-31 AUG 135/135/135 90 päeva keskmine 28 AUG 118
V. Geomagneetiline A-indeks
OBSERVED AFR/AP 27 AUG 077/112 ESTIMATED AFR/AP 28 AUG 022/030 PREDICTED AFR/AP 29 AUG-31 AUG 010/015-015/015-015/015
VI. Geomagnetilised aktiivsuse tõenäosused 29 AUG kuni 31 AUG
| A. Keskmistel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 20% | 20% | 20% |
| Väike torm | 01% | 10% | 10% |
| Suur-tõsine torm | 01% | 01% | 01% |
| B. Kõrgetel laiuskraadidel | |||
|---|---|---|---|
| Aktiivne | 25% | 50% | 25% |
| Väike torm | 10% | 15% | 15% |
| Suur-tõsine torm | 01% | 01% | 01% |
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