Viewing archive of fredag, 18 juni 1999
Solaktivitetsrapport
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.
Rapport för sol- och geofysisk aktivitet 1999 Jun 18 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 169 publicerat klockan 2200Z på 18 JUN 1999IA. Analys av solfläcksgrupper och solaktivitet från 17-2100Z till 18-2100Z SOLAR ACTIVITY RETURNED TO LOW LEVELS. THE LARGEST
EVENT OF THE PERIOD WAS A C7/1N FROM REGION 8585 (N38E05). SEVERAL
OTHER SMALL TO MIDDLE LEVEL C-CLASS EVENTS WERE OBSERVED. SOHO DATA
INDICATED THAT MOST OF THESE EVENTS WERE FROM BEYOND THE NORTHWEST
LIMB. HOWEVER, A MODERATE DURATION C5 X-RAY EVENT WAS OBSERVED AT
18/1657Z THAT CORRELATED WITH A FLARE BRIGHT MOUND NEAR NE25. LAST
ROTATION, THIS AREA WAS COMPRISED OF SEVERAL ACTIVE REGIONS THAT
PRODUCED FREQUENT C-CLASS AND OCCASIONAL M-CLASS EVENTS. OTHER DISK
REGIONS EXHIBITED ONLY MINOR EVOLUTION.
IB. Prognos för solaktivitet
SOLAR ACTIVITY SHOULD BE GENERALLY LOW
FOR THE NEXT THREE DAYS. M-CLASS EVENTS ARE POSSIBLE FROM THE AREA
ROTATING OVER THE NORTHEAST LIMB. A BETTER DETERMINATION OF THE
FLARE POTENTIAL OF THIS AREA MUST AWAIT ITS APPEARANCE TO THE
VISIBLE DISK.
IIA. Sammanfattning av geofysisk aktivitet 17-2100Z till 18-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO SLIGHTLY UNSETTLED FOR THE NEXT THREE DAYS.
III. Chans för solutbrott från 19 JUN till 21 JUN
| M-klass | 25% | 25% | 25% |
| X-klass | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 18 JUN 147 Prognoserat 19 JUN-21 JUN 150/153/156 90 Day Mean 18 JUN 136
V. Geomagnetiskt A-index
OBSERVED AFR/AP 17 JUN 006/007 ESTIMATED AFR/AP 18 JUN 005/008 PREDICTED AFR/AP 19 JUN-21 JUN 007/007-007/007-007/007
VI. Chanser för geomagnetisk aktivitet från 19 JUN till 21 JUN
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 10% | 10% | 10% |
| Små stormförhållanden | 05% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 10% | 10% | 15% |
| Små stormförhållanden | 05% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
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Rymdvädersfakta
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