Viewing archive of lördag, 13 mars 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 Mar 13 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 072 publicerat klockan 2200Z på 13 MAR 1999IA. Analys av solfläcksgrupper och solaktivitet från 12-2100Z till 13-2100Z SOLAR ACTIVITY INCREASED TO MODERATE LEVELS. REGION
8487 (N17E39) REMAINED A RELATIVELY SMALL D-TYPE GROUP AND SHOWED
MINOR PENUMBRAL GROWTH AS WELL AS SOME MAGNETIC SHEAR IN THE
VICINITY OF THE DOMINANT LEADER SPOT. IT PRODUCED AN IMPULSIVE M1/1N
AT 13/2034Z AND NUMEROUS SUBFLARES EARLIER IN THE DAY, A FEW OF
WHICH REACHED C-CLASS. NONE OF THESE FLARES WERE IMPRESSIVE IN RADIO
EMISSION. REGION 8485 (N23E00) REMAINED A MODERATE-SIZED E-TYPE
GROUP WITH SOME MIXED POLARITIES. IT WAS GENERALLY STABLE AND
PRODUCED ISOLATED SUBFARES. THE REMAINING REGIONS WERE QUIET AND
STABLE.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE AT
MOSTLY LOW LEVELS. HOWEVER, ANOTHER ISOLATED M-CLASS FLARE COULD
OCCUR FROM REGION 8487 SOMETIME DURING THE PERIOD. REGION 8485 ALSO
PROVIDES A SLIGHT CHANCE FOR AN ISOLATED M-CLASS FLARE.
IIA. Sammanfattning av geofysisk aktivitet 12-2100Z till 13-2100Z
GEOMAGNETIC FIELD ACTIVITY INCREASED TO UNSETTLED TO ACTIVE LEVELS
DURING 13/1200 - 1400Z. OTHERWISE, THE FIELD WAS AT QUIET TO
UNSETTLED LEVELS.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE AT UNSETTLED TO ACTIVE LEVELS THROUGH THE PERIOD.
BRIEF MINOR STORM PERIODS ARE ALSO POSSIBLE. THIS ACTIVITY IS
EXPECTED IN RESPONSE TO CME EFFECTS. AN ISOLATED, POSITIVE POLARITY
CORONAL HOLE MAY ALSO DISTURB THE FIELD SOMETIME DURING THE PERIOD.
III. Chans för solutbrott från 14 MAR till 16 MAR
| M-klass | 30% | 30% | 30% |
| X-klass | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 13 MAR 144 Prognoserat 14 MAR-16 MAR 145/145/140 90 Day Mean 13 MAR 142
V. Geomagnetiskt A-index
OBSERVED AFR/AP 12 MAR 009/010 ESTIMATED AFR/AP 13 MAR 007/009 PREDICTED AFR/AP 14 MAR-16 MAR 020/015-015/012-015/010
VI. Chanser för geomagnetisk aktivitet från 14 MAR till 16 MAR
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 45% | 40% | 40% |
| Små stormförhållanden | 20% | 10% | 10% |
| Svåra stormförhållanden | 05% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 55% | 45% | 45% |
| Små stormförhållanden | 25% | 15% | 15% |
| Svåra stormförhållanden | 10% | 05% | 05% |
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