Viewing archive of torsdag, 28 september 2000
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 2000 Sep 28 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 272 publicerat klockan 2200Z på 28 SEP 2000IA. Analys av solfläcksgrupper och solaktivitet från 27-2100Z till 28-2100Z SOLAR ACTIVITY WAS LOW. ONLY A FEW MINOR C-CLASS
EVENTS WERE OBSERVED DURING THE PERIOD. WHILE STILL A LARGE SUNSPOT
GROUP, REGION 9169 (N12W58) HAS DECAYED FURTHER AND NOW MEASURES
APPROXIMATELY 790 MILLIONTHS OF WHITE LIGHT AREA WITH 51 SPOTS.
REGION 9170 (S06W63) HAS ALSO SHOWN SOME DECAY SINCE YESTERDAY.
SLIGHT GROWTH WAS OBSERVED IN REGION 9173 (S12E25), AND THE REGION
HAS PRODUCED A COUPLE OF MINOR C-CLASS EVENTS. NEW REGION 9178
(S23E63) WAS NUMBERED TODAY.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. CONTINUED C-CLASS ACTIVITY IS EXPECTED. THERE REMAINS
THE POSSIBILITY OF AN ISOLATED M-CLASS EVENT.
IIA. GEOPHYSICAL ACTIVITY SUMMARY 27/2100Z TO 28/2100Z:
THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. TWO PERIODS OF ISOLATED
ACTIVE CONDITIONS WERE OBSERVED. CHARACTERISTICS ASSOCIATED WITH
THE HIGH-SPEED CORONAL HOLE STREAM OVER THE LAST SEVERAL DAYS ARE
NOW NEGLIGIBLE. THE GREATER THAN 2 MEV ELECTRONS AT GEOSYNCHRONOUS
ORBIT WERE AT HIGH LEVELS.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY QUIET TO UNSETTLED WITH A SLIGHT CHANCE OF
ISOLATED ACTIVE CONDITIONS.
III. Chans för solutbrott från 29 SEP till 01 OCT
| M-klass | 50% | 50% | 50% |
| X-klass | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 28 SEP 202 Prognoserat 29 SEP-01 OCT 195/190/180 90 Day Mean 28 SEP 182
V. Geomagnetiskt A-index
OBSERVED AFR/AP 27 SEP 008/011 ESTIMATED AFR/AP 28 SEP 010/012 PREDICTED AFR/AP 29 SEP-01 OCT 010/010-010/010-010/010
VI. Chanser för geomagnetisk aktivitet från 29 SEP till 01 OCT
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 20% | 20% |
| Små stormförhållanden | 10% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 25% | 25% |
| Små stormförhållanden | 15% | 10% | 10% |
| Svåra stormförhållanden | 01% | 01% | 01% |
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Rymdvädersfakta
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