Viewing archive of onsdag, 24 november 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 Nov 24 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 328 publicerat klockan 2200Z på 24 NOV 1999IA. Analys av solfläcksgrupper och solaktivitet från 23-2100Z till 24-2100Z SOLAR ACTIVITY WAS LOW. THE LARGEST EVENT OF THE PERIOD
WAS AN OPTICALLY UNCORRELATED C9 X-RAY EVENT AT 24/1222Z. THE LIKELY
SOURCE WAS ACTIVE REGION 8765 (L234) WHICH JUST ROTATED AROUND THE
WEST LIMB. A PROMINENCE ERUPTED OFF THE WEST LIMB NEAR N45,A CORONAL
MASS EJECTION WAS OBSERVED WITH THIS ERUPTION. REGION 8771 (N18W40)
REMAINS THE LARGEST REGION ON THE VISIBLE DISK WITH 750 MILLIONTHS
OF WHITE LIGHT AERIAL COVERAGE. A C6/1N FLARE OCCURRED IN THIS
REGION AT 24/1930Z WITH MINOR DISCRETE RADIO EMISSIONS. NEW REGIONS
8779 (S09W27) AND 8780 (S11E51) WERE NUMBERED TODAY.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO REMAIN
AT LOW TO MODERATE LEVELS. REGION 8771 AND OLD REGION 8765 ARE STILL
CAPABLE OF PRODUCING M-CLASS EVENTS.
IIA. Sammanfattning av geofysisk aktivitet 23-2100Z till 24-2100Z
THE GEOMAGNETIC FIELD WAS AT MOSTLY QUIET TO ACTIVE CONDITIONS WITH A
SINGLE PERIOD OF MINOR STORMING AT 24/09-12Z. SUSTAINED NEGATIVE BZ
IS RESPONSIBLE FOR THE MINOR DISTURBANCE.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED WITH ACTIVE CONDITIONS DURING
LOCAL NIGHTTIME HOURS.
III. Chans för solutbrott från 25 NOV till 27 NOV
| M-klass | 60% | 60% | 60% |
| X-klass | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | YELLOW | ||
IV. Penticton 10.7 cm Flux
Observerad 24 NOV 187 Prognoserat 25 NOV-27 NOV 185/180/175 90 Day Mean 24 NOV 166
V. Geomagnetiskt A-index
OBSERVED AFR/AP 23 NOV 013/015 ESTIMATED AFR/AP 24 NOV 018/019 PREDICTED AFR/AP 25 NOV-27 NOV 012/010-010/010-007/008
VI. Chanser för geomagnetisk aktivitet från 25 NOV till 27 NOV
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 20% | 20% |
| Små stormförhållanden | 10% | 10% | 10% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 25% | 25% |
| Små stormförhållanden | 15% | 15% | 15% |
| Svåra stormförhållanden | 01% | 01% | 01% |
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