Viewing archive of lördag, 15 april 2000
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 2000 Apr 15 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 106 publicerat klockan 2200Z på 15 APR 2000IA. Analys av solfläcksgrupper och solaktivitet från 14-2100Z till 15-2100Z SOLAR ACTIVITY INCREASED TO MODERATE LEVELS. REGION
8955 (S22E20) SHOWED A GRADUAL INCREASE IN MAGNETIC COMPLEXITY
DURING THE PERIOD AND PRODUCED SEVERAL FLARES, TWO OF WHICH REACHED
M-CLASS. THE FIRST WAS AN M4/SF AT 15/1018Z ASSOCIATED WITH A 570
SFU TENFLARE AND A PARTIAL-HALO CME. THE SECOND WAS AN M2/1N AT
15/1448Z. ANOTHER FLARE OF NOTE FROM REGION 8955 WAS A C7/1N AT
15/1905Z ASSOCIATED WITH A SMALL FILAMENT DISAPPEARANCE. MINOR
GROWTH WAS REPORTED IN REGION 8951 (N12W31). REGION 8948 (S16W76)
PRODUCED ISOLATED LOW-LEVEL C-CLASS FLARES AS IT CONTINUED TO DECAY.
THE REMAINING REGIONS WERE STABLE. NO NEW REGIONS WERE ASSIGNED.
IB. Prognos för solaktivitet
SOLAR ACTIVITY IS EXPECTED TO BE AT
LOW TO MODERATE LEVELS. REGION 8955 MAY PRODUCE ADDITIONAL M-CLASS
FLARES.
IIA. Sammanfattning av geofysisk aktivitet 14-2100Z till 15-2100Z
GEOMAGNETIC FIELD ACTIVITY WAS AT QUIET LEVELS. THE GREATER THAN 2
MEV ELECTRON FLUX AT GEOSYNCHROUNOUS ORBIT REMAINED AT MODERATE TO
HIGH LEVELS.
IIB. Prognos för geofysisk aktivitet
GEOMAGNETIC FIELD ACTIVITY IS
EXPECTED TO INCREASE TO UNSETTLED TO ACTIVE LEVELS DURING 16 APRIL
IN RESPONSE TO A PARTIAL-HALO CME OBSERVED LATE ON 13 APRIL. ACTIVE
LEVELS ARE ALSO POSSIBLE ON 18 APRIL DUE TO THE PARTIAL-HALO CME
OBSERVED EARLIER TODAY. THE GREATER THAN 2 MEV ELECTRON FLUX IS
EXPECTED TO RANGE FROM NORMAL TO HIGH LEVELS DURING THE PERIOD.
III. Chans för solutbrott från 16 APR till 18 APR
| M-klass | 50% | 50% | 50% |
| X-klass | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 15 APR 164 Prognoserat 16 APR-18 APR 165/165/165 90 Day Mean 15 APR 184
V. Geomagnetiskt A-index
OBSERVED AFR/AP 14 APR 002/005 ESTIMATED AFR/AP 15 APR 007/008 PREDICTED AFR/AP 16 APR-18 APR 018/020-010/012-015/018
VI. Chanser för geomagnetisk aktivitet från 16 APR till 18 APR
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 25% | 30% |
| Små stormförhållanden | 20% | 10% | 15% |
| Svåra stormförhållanden | 05% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 45% | 30% | 40% |
| Små stormförhållanden | 25% | 15% | 20% |
| Svåra stormförhållanden | 10% | 05% | 05% |
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