Viewing archive of torsdag, 4 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 04 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 308 publicerat klockan 2200Z på 04 NOV 1999IA. Analys av solfläcksgrupper och solaktivitet från 03-2100Z till 04-2100Z SOLAR ACTIVITY REMAINED AT LOW LEVELS. REGION 8749
(S18W39) PRODUCED SEVERAL C-CLASS FLARES EARLY IN THE PERIOD, THE
LARGEST OF WHICH WAS A C8/1F AT 03/2249Z. THIS REGION SHOWED NO
SIGNIFICANT CHANGES DURING THE PERIOD AND RETAINED A MIXED-POLARITY
STRUCTURE. REGION 8747 (N11W38) DISPLAYED MINOR MIXED POLARITIES,
BUT WAS STABLE. A BROAD BAND OF INTENSE CA XV EMISSION WAS VISIBLE
ON THE NORTHEAST LIMB. IT LIKELY HERALDS THE RETURN OF A BAND OF
PREVIOUSLY ACTIVE LONGITUDES (ROUGHLY L = 320 TO 280). NEW REGION
8754 (S09E66) WAS NUMBERED.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO REMAIN
MOSTLY LOW. HOWEVER, A GRADUAL INCREASING TREND IS EXPECTED DUE TO
THE RETURN OF PREVIOUSLY ACTIVE LONGITUDES.
IIA. Sammanfattning av geofysisk aktivitet 03-2100Z till 04-2100Z
THE GEOMAGNETIC FIELD WAS AT MOSTLY QUIET LEVELS.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED EARLY IN THE PERIOD. ACTIVITY IS
EXPECTED TO INCREASE TO UNSETTLED TO ACTIVE LEVELS LATE IN THE
PERIOD DUE TO RECURRENT CORONAL HOLE EFFECTS.
III. Chans för solutbrott från 05 NOV till 07 NOV
| M-klass | 10% | 10% | 15% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 04 NOV 148 Prognoserat 05 NOV-07 NOV 150/155/165 90 Day Mean 04 NOV 154
V. Geomagnetiskt A-index
OBSERVED AFR/AP 03 NOV 004/005 ESTIMATED AFR/AP 04 NOV 006/007 PREDICTED AFR/AP 05 NOV-07 NOV 005/007-010/007-015/015
VI. Chanser för geomagnetisk aktivitet från 05 NOV till 07 NOV
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 15% | 20% | 25% |
| Små stormförhållanden | 05% | 10% | 15% |
| Svåra stormförhållanden | 01% | 01% | 05% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 25% | 35% |
| Små stormförhållanden | 10% | 15% | 20% |
| Svåra stormförhållanden | 01% | 01% | 10% |
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