Viewing archive of lördag, 29 maj 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 May 29 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 149 publicerat klockan 2200Z på 29 MAY 1999IA. Analys av solfläcksgrupper och solaktivitet från 28-2100Z till 29-2100Z SOLAR ACTIVITY WAS MODERATE. AN M1 X-RAY FLARE WITH
MINOR RADIO BURSTS AND A TYPE II SWEEP OCCURRED AT 29/0304Z. A CME
OBSERVED AT THE SAME TIME SUGGEST THE EVENT ORIGINATED ON THE SE
LIMB. REGION 8552 (N18W06) CONTINUES TO EXHIBIT SOME MAGNETIC
COMPLEXITY BUT HAS YET TO PRODUCE ANY SIGNIFICANT ACTIVITY. SPOTS IN
THE SOUTHERN PORTION OF REGION 8557 (S28E48) APPEAR TO BE A SEPARATE
BIPOLE, THUS WERE NUMBERED AS REGION 8560 (S23E50). NEW REGION 8561
(N22E18) WAS ALSO NUMBERED TODAY.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. C-CLASS FLARES ARE POSSIBLE FROM SEVERAL REGIONS AND AN
ISOLATED M-CLASS IS POSSIBLE FROM REGION 8522 OR THE REGION
8557/8560 COMPLEX IN THE SE QUADRANT,
IIA. Sammanfattning av geofysisk aktivitet 28-2100Z till 29-2100Z
THE GEOMAGNETIC FIELD WAS MOSTLY QUIET WITH ISOLATED UNSETTLED
PERIODS.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD IS
EXPECTED TO REMAIN QUIET TO UNSETTLED. THE TREND WILL BE FOR MORE
UNSETTLED CONDITIONS AS A SOUTHERN CORONAL HOLE MOVES INTO A
GEOEFFECTIVELY FAVORABLE POSITION. INDICATIONS NOW ARE THAT THE
IMPRESSIVE HALO/CORONAL MASS EJECTION OBSERVED ON THE 27TH LIKELY
ORIGINATED FROM BEHIND THE LIMB - NO GEOMAGNETIC ACTIVITY IS
EXPECTED FROM THIS EVENT.
III. Chans för solutbrott från 30 MAY till 01 JUN
| M-klass | 40% | 40% | 40% |
| X-klass | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 29 MAY 149 Prognoserat 30 MAY-01 JUN 155/155/160 90 Day Mean 29 MAY 130
V. Geomagnetiskt A-index
OBSERVED AFR/AP 28 MAY 007/009 ESTIMATED AFR/AP 29 MAY 007/010 PREDICTED AFR/AP 30 MAY-01 JUN 012/020-010/012-008/010
VI. Chanser för geomagnetisk aktivitet från 30 MAY till 01 JUN
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 25% | 20% |
| Små stormförhållanden | 10% | 10% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 30% | 25% |
| Små stormförhållanden | 15% | 15% | 10% |
| Svåra stormförhållanden | 01% | 01% | 01% |
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