Viewing archive of lördag, 6 februari 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 Feb 06 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 037 publicerat klockan 2200Z på 06 FEB 1999IA. Analys av solfläcksgrupper och solaktivitet från 05-2100Z till 06-2100Z SOLAR ACTIVITY REMAINED AT VERY LOW LEVELS WITH
ISOLATED B-CLASS X-RAY FLARES, NONE OF WHICH WERE OPTICALLY
CORRELATED. THERE WERE TWO SPOTTED REGIONS ON THE DISK, INCLUDING
NEWLY NUMBERED REGION 8455 (S19E33). BOTH REGIONS WERE SMALL,
STRUCTURALLY SIMPLE, AND STABLE. A 23-DEGREE FILAMENT, LAST SEEN
CENTERED NEAR S54W34, DISAPPEARED DURING 06/1219 - 1540Z. TODAY'S
10.7 CM RADIO FLUX READING WAS THE LOWEST SINCE LAST JULY.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO REMAIN
AT VERY LOW LEVELS DURING THE FIRST DAY OF THE FORECAST PERIOD. AN
INCREASE IN ACTIVITY LEVELS IS POSSIBLE DURING THE REMAINING DAYS
WITH THE EXPECTED RETURN OF OLD REGIONS 8439 (S23, L = 272) AND 8440
(N19, L = 265).
IIA. Sammanfattning av geofysisk aktivitet 05-2100Z till 06-2100Z
THE GEOMAGNETIC FIELD WAS AT QUIET TO UNSETTLED LEVELS FOR MOST OF
THE PERIOD. HOWEVER, ACTIVE LEVELS WERE DETECTED AT MIDDLE LATITUDES
DURING 06/0500 - 0600Z.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE AT QUIET TO UNSETTLED LEVELS DURING THE FIRST TWO
DAYS. ACTIVE LEVELS ARE POSSIBLE BEGINNING 09 FEBRUARY IN RESPONSE
TO RECENT FILAMENT DISAPPEARANCES.
III. Chans för solutbrott från 07 FEB till 09 FEB
| M-klass | 05% | 10% | 10% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 06 FEB 099 Prognoserat 07 FEB-09 FEB 105/115/125 90 Day Mean 06 FEB 141
V. Geomagnetiskt A-index
OBSERVED AFR/AP 05 FEB 007/008 ESTIMATED AFR/AP 06 FEB 012/011 PREDICTED AFR/AP 07 FEB-09 FEB 008/011-008/011-015/015
VI. Chanser för geomagnetisk aktivitet från 07 FEB till 09 FEB
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 20% | 30% |
| Små stormförhållanden | 05% | 05% | 15% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 25% | 35% |
| Små stormförhållanden | 10% | 10% | 20% |
| Svåra stormförhållanden | 01% | 01% | 05% |
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