Viewing archive of måndag, 13 september 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 Sep 13 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 256 publicerat klockan 2200Z på 13 SEP 1999IA. Analys av solfläcksgrupper och solaktivitet från 12-2100Z till 13-2100Z SOLAR ACTIVITY WAS LOW. THE LARGEST EVENT THIS PERIOD
WAS A C4/SF FROM REGION 8699 (N21E01), WHICH OCCURRED AT 13/0846UT.
THE RAPID GROWTH NOTED IN THIS REGION OVER THE PAST 48 HOURS
SUBSIDED DURING THE LATTER HALF OF THIS PERIOD. THE REGION RETAINS A
MODERATELY COMPLEX MAGNETIC STRUCTURE BUT HAS RELATIVELY SMALL WHITE
LIGHT AERIAL COVERAGE. REGION 8690 (N14W06) EXHIBITED GROWTH,
PRODUCED OCCASIONAL SUBFLARES LATE IN THE PERIOD AND WAS THE LIKELY
SOURCE FOR A TYPE II SWEEP AT 13/1622UT. NEW REGION 8701 (N18E13),
WAS NUMBERED TODAY.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
SEVERAL EXISTING REGIONS HAVE C-CLASS FLARE POTENTIAL WITH A SMALL
CHANCE OF AN ISOLATED M-CLASS EVENT.
IIA. Sammanfattning av geofysisk aktivitet 12-2100Z till 13-2100Z
THE GEOMAGNETIC FIELD WAS AT UNSETTLED TO MINOR STORM CONDITIONS WITH
AN ISOLATED MAJOR STORM PERIOD OBSERVED BETWEEN 13/0000 - 0300Z.
THIS DISTURBANCE IS LIKELY ASSOCIATED WITH A HIGH-SPEED CORONAL HOLE
WIND STREAM.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO CONTINUE AT UNSETTLED TO MINOR STORM LEVELS WITH THE
MOST DISTURBED CONDITIONS EXPECTED DURING LOCAL NIGHTTIME HOURS.
III. Chans för solutbrott från 14 SEP till 16 SEP
| M-klass | 20% | 20% | 20% |
| X-klass | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 13 SEP 155 Prognoserat 14 SEP-16 SEP 160/165/170 90 Day Mean 13 SEP 164
V. Geomagnetiskt A-index
OBSERVED AFR/AP 12 SEP 020/026 ESTIMATED AFR/AP 13 SEP 032/040 PREDICTED AFR/AP 14 SEP-16 SEP 025/025-018/015-018/015
VI. Chanser för geomagnetisk aktivitet från 14 SEP till 16 SEP
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 50% | 50% | 40% |
| Små stormförhållanden | 20% | 20% | 15% |
| Svåra stormförhållanden | 10% | 10% | 05% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 60% | 60% | 50% |
| Små stormförhållanden | 30% | 30% | 25% |
| Svåra stormförhållanden | 10% | 10% | 05% |
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