Affichage des archives de samedi, 8 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 08 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 099 publié à 2200Z le 08 APR 2000IA. Analyse des régions solaires actives et activité du 07-2100Z au 08-2100Z SOLAR ACTIVITY HAS BEEN MODERATE. REGION 8948 (S15E14)
PRODUCED AN M2/1B FLARE AT 0240Z AND AN M1/1N AT 2046Z. THIS REGION
HAS CONTINUED TO GROW AND HAS A COMPLICATED MAGNETIC STRUCTURE
INCLUDING A SMALL DELTA SPOT. NEARLY ALL OF TODAY'S OBSERVED FLARE
ACTIVITY CAME FROM THIS GROUP. REGION 8951 (N13E64) ROTATED MORE
FULLY INTO VIEW AS A D-TYPE SUNSPOT GROUP. REGION 8949 (S19E43)
EXHIBITED GROWTH BUT WAS STABLE. A CME WAS OBSERVED TO ENTER THE
LASCO C2 FIELD OF VIEW AT 1554Z TODAY: THE MATERIAL WAS CONSTRAINED
TO A RELATIVELY SMALL ANGLE OFF THE SOUTHWEST LIMB, AND DISK
OBSERVATIONS INDICATED THAT THE SOURCE REGION WAS JUST BEHIND WEST
LIMB.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE. REGION 8948 SHOWS FAIR-GOOD POTENTIAL FOR PRODUCING
ADDITIONAL M-CLASS FLARES.
IIA. Résumé de l'activité géophysique du 07-2100Z au 08-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED AT MID-LATITUDES AND WAS
QUIET TO ACTIVE AT HIGH LATITUDES. THE HIGH LATITUDE ACTIVE PERIODS
OCCURRED FROM 0600-1200Z. SOLAR WIND SPEED REMAINS ELEVATED (500-550
KM/S), BUT THE DENSITY IS LOW AND THE MAGNETIC FIELD INTENSITY IS
WEAK.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY UNSETTLED FOR THE NEXT THREE DAYS.
III. Probabilité d'éruption solaire du 09 APR au 11 APR
| Classe M | 60% | 60% | 60% |
| Classe X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 08 APR 182 Prévisionnel 09 APR-11 APR 180/180/175 Moyenne des 90 derniers jours 08 APR 186
V. Indice géomagnetique A
OBSERVED AFR/AP 07 APR 034/050 ESTIMATED AFR/AP 08 APR 015/015 PREDICTED AFR/AP 09 APR-11 APR 012/010-010/010-008/008
VI. Probabilités d'activité géomagnétique du 09 APR au 11 APR
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 15% | 10% |
| Tempête mineure | 10% | 05% | 05% |
| Tempête majeure/sévère | 05% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 20% | 15% |
| Tempête mineure | 15% | 10% | 05% |
| Tempête majeure/sévère | 10% | 05% | 05% |
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