Viewing archive of onsdag, 12 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 12 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 103 publicerat klockan 2200Z på 12 APR 2000IA. Analys av solfläcksgrupper och solaktivitet från 11-2100Z till 12-2100Z SOLAR ACTIVITY REMAINED AT MODERATE LEVELS. REGION 8948
(S16W37) APPEARED TO STABILIZE AS A MODERATE-SIZED, MIXED-POLARITY
REGION FOLLOWING TWO DAYS OF GRADUAL DECAY. IT PRODUCED TWO M-CLASS
FLARES DURING THE PERIOD: AN M1/1N AT 11/2337Z AND AN M1/SF AT
12/0335Z. REGION 8948 ALSO PRODUCED A C2/SN FLARE AT 12/0630Z WITH
AN ASSOCIATED TYPE II RADIO SWEEP. NEW REGION 8959 (S19E29) EMERGED
JUST SOUTH OF REGION 8953 (S16E31).
IB. Prognos för solaktivitet
ACTIVITY IS EXPECTED TO BE AT LOW TO
MODERATE LEVELS. THERE IS A FAIR TO GOOD CHANCE FOR ISOLATED M-CLASS
FLARES FROM REGION 8948.
IIA. Sammanfattning av geofysisk aktivitet 11-2100Z till 12-2100Z
GEOMAGNETIC FIELD ACTIVITY WAS AT QUIET TO UNSETTLED LEVELS. THE
GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRNOUS ORBIT WAS AT
MODERATE TO HIGH LEVELS.
IIB. Prognos för geofysisk aktivitet
GEOMAGNETIC FIELD ACTIVITY IS
EXPECTED TO REMAIN AT QUIET TO UNSETTLED LEVELS. AT THIS POINT, IT
APPEARS UNLIKELY THAT WE WILL SEE ANY SIGNIFICANT EFFECTS FROM THE
FAINT HALO-CME OBSERVED EARLY ON 10 APRIL. THE GREATER THAN 2 MEV
ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT IS EXPECTED TO DECLINE TO
NORMAL TO MODERATE LEVELS EARLY IN THE PERIOD.
III. Chans för solutbrott från 13 APR till 15 APR
| M-klass | 50% | 45% | 40% |
| X-klass | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observerad 12 APR 173 Prognoserat 13 APR-15 APR 175/175/170 90 Day Mean 12 APR 185
V. Geomagnetiskt A-index
OBSERVED AFR/AP 11 APR 008/010 ESTIMATED AFR/AP 12 APR 008/005 PREDICTED AFR/AP 13 APR-15 APR 012/012-010/010-012/012
VI. Chanser för geomagnetisk aktivitet från 13 APR till 15 APR
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 15% | 20% |
| Små stormförhållanden | 10% | 05% | 10% |
| Svåra stormförhållanden | 05% | 01% | 05% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 20% | 25% |
| Små stormförhållanden | 15% | 10% | 15% |
| Svåra stormförhållanden | 15% | 10% | 15% |
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