Affichage des archives de vendredi, 12 septembre 1997
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 1997 Sep 12 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
************************************ CORRECTED COPY ****************************************** SDF numéro 255 publié à 2200Z le 12 SEP 1997IA. Analyse des régions solaires actives et activité du 11-2100Z au 12-2100Z SOLAR ACTIVITY WAS LOW. REGION 8084 (N22W26), A 22-SPOT
'EAO' BETA-GAMMA GROUP FOR MOST OF THE REPORTING PERIOD, HAS
RECENTLY DEVELOPED AN EMERGING FLUX REGION OF REVERSED POLARITY IN
THE FOLLOWING PART OF THE REGION, CREATING STEEP FIELD GRADIENTS.
THE REGION NOW DISPLAYS A MODEST DELTA CONFIGURATION AND ELONGATED
SPOTS IN THIS AREA, AND HAS GENERATED THREE C1 FLARES AND
NUMEROUS SUBFLARES IN THE LAST 24 HOURS. REGION 8085 (S26E02), A
33-SPOT 'FKI' BETA GROUP, AND 8083 (S27W59), A 12-SPOT 'EKO' BETA
GROUP, REMAIN RELATIVELY STABLE AND QUIET.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. THE PROBABILITY FOR C-CLASS X-RAY EVENTS REMAINS HIGH
FOR REGIONS 8084 AND 8085, WITH THE RECENT ACTIVITY ASSOCIATED WITH
REGION 8084 ALSO PRESENTING A GOOD CHANCE FOR M-CLASS EVENTS.
IIA. Résumé de l'activité géophysique du 11-2100Z au 12-2100Z
THE GEOMAGNETIC FIELD HAS BEEN MOSTLY UNSETTLED, WITH ISOLATED
PERIODS OF ACTIVE CONDITIONS, FOR THE PAST 24 HOURS. THE GREATER THAN
2 MEV ELECTRON FLUX HAS BEEN PREDOMINATELY HIGH TO VERY HIGH,
CROSSING OVER INTO THE VERY HIGH RANGE AT APPROXIMATELY 10/1700Z,
AND CONTINUING AT THAT LEVEL FOR THE REMAINDER OF THE REPORTING
PERIOD.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY UNSETTLED WITH THE CHANCE FOR ISOLATED PERIODS
OF ACTIVE CONDITIONS FOR THE NEXT 24 HOURS, WITH ACTIVITY DECREASING
TO QUIET TO UNSETTLED ON DAYS TWO AND THREE,
III. Probabilité d'éruption solaire du 13 SEP au 15 SEP
| Classe M | 50% | 50% | 50% |
| Classe X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 12 SEP 109 Prévisionnel 13 SEP-15 SEP 108/107/105 Moyenne des 90 derniers jours 12 SEP 078
V. Indice géomagnetique A
OBSERVED AFR/AP 11 SEP 009/009 ESTIMATED AFR/AP 12 SEP 017/015 PREDICTED AFR/AP 13 SEP-15 SEP 015/015-010/010-005/015
VI. Probabilités d'activité géomagnétique du 13 SEP au 15 SEP
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 25% | 15% | 10% |
| Tempête mineure | 15% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 25% | 15% | 10% |
| Tempête mineure | 15% | 05% | 05% |
| Tempête majeure/sévère | 05% | 01% | 01% |
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