Affichage des archives de mardi, 11 avril 2000
Rapport d'activité solaire
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 d'activité solaire et géophysique 2000 Apr 11 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 102 publié à 2200Z le 11 APR 2000IA. Analyse des régions solaires actives et activité du 10-2100Z au 11-2100Z SOLAR ACTIVITY WAS MODERATE. REGION 8948 (S15W12) PRODUCED
TODAY'S ONLY M-CLASS EVENT, AN M1/1N AT 1810Z. THE REGION PRODUCED
ADDITIONAL SUBFLARES AND CONTINUES TO BE THE DOMINATE REGION ON THE
DISK. THERE HAS BEEN A SLOW DECLINE AND SIMPLIFICATION IN THE REGION
AND THE DELTA CONFIGURATION OF THE LAST FEW DAYS APPEARS TO BE GONE.
NEW REGION 8958 (N17E66) ROTATED IN TO VIEW TODAY AS A SIMPLE B-TYPE
REGION.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. THERE IS A FAIR-TO-GOOD CHANCE FOR CONTINUED M-CLASS
FLARES FROM REGION 8948. HOWEVER, THE RECENT DECLINING TREND IN THE
REGION WILL LIKELY LEAD TO A GRADUAL REDUCTION IN INTENSITY AND
FREQUENCY OF FLARES FROM THIS REGION.
IIA. Résumé de l'activité géophysique du 10-2100Z au 11-2100Z
THE GEOMAGNETIC FIELD WAS MOSTLY QUIET TO UNSETTLED FOR THE PAST 24
HOURS. THE GREATER THAN 2 MEV ELECTRON FLUXES ATTAINED HIGH LEVELS.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BECOME ACTIVE SOMETIME OVER THE NEXT 24-48 HOURS. A MORE
DETAILED ANALYSIS OF YESTERDAY'S CORONAGRAPH DATA SHOWED THAT IN
FACT A VERY FAINT HALO CORONAL MASS EJECTION COULD BE ASSOCIATED
WITH THE M3 FLARE OF 9 APRIL FROM 8948. WHILE FAR FROM A CERTAINTY,
THERE IS A FAIR CHANCE FOR THE CME TO PASS BY EARTH AND ENHANCE
ACTIVITY LEVELS SOMETIME DURING THE NEXT 1-2 DAYS. CONDITIONS ARE
EXPECTED TO RETURN TO QUIET TO UNSETTLED BY THE THIRD DAY.
III. Probabilité d'éruption solaire du 12 APR au 14 APR
| Classe M | 50% | 45% | 40% |
| Classe X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 11 APR 182 Prévisionnel 12 APR-14 APR 185/190/190 Moyenne des 90 derniers jours 11 APR 186
V. Indice géomagnetique A
OBSERVED AFR/AP 10 APR 014/020 ESTIMATED AFR/AP 11 APR 010/012 PREDICTED AFR/AP 12 APR-14 APR 020/020-020/015-010/007
VI. Probabilités d'activité géomagnétique du 12 APR au 14 APR
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 35% | 35% | 25% |
| Tempête mineure | 20% | 20% | 10% |
| Tempête majeure/sévère | 15% | 15% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 30% | 25% |
| Tempête mineure | 25% | 25% | 15% |
| Tempête majeure/sévère | 20% | 20% | 05% |
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