Affichage des archives de mercredi, 5 septembre 2012
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 2012 Sep 05 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 249 publié à 2200Z le 05 Sep 2012IA. Analyse des régions solaires actives et activité du 04-2100Z au 05-2100Z Solar activity was low. Region 1564 (S14E01 -
Esi/beta-gamma) produced occasional C-class flares including a C6 at
05/0347Z and a C7/Sn at 05/0806Z, neither of which were associated
with significant radio emission. Region 1564 showed gradual spot and
penumbral decay during the period, but retained a beta-gamma
configuration due to polarity mixing in the vicinity of its
intermediate spots. Region 1560 (N04W58 - Eai/beta-gamma-delta)
showed minor spot loss in its trailer portion during the period. It
retained a delta within its intermediate spots, but the delta
appeared to be dissipating. The remaining spotted region were
unremarkable. No new regions were numbered. No Earth-directed CME
activity occurred during the period.
IB. Prévisions d'activité solaire
Solar activity is expected to be low
through the period (06 - 08 September) with a chance for an isolated
M-class flare during days 1 - 2.
IIA. Résumé de l'activité géophysique du 04-2100Z au 05-2100Z
Geomagnetic field activity ranged from quiet to major storm levels
with a brief period of severe storm levels at high latitudes. An
interplanetary shock passed the ACE spacecraft at 04/2203Z
indicating the arrival of the CMEs observed on 02 September. Field
activity increased to major storm levels during 05/0000 - 0300Z
following the shock, then decreased to minor storm levels during
05/0300 - 0600Z. A further decrease to active levels occurred during
05/0300 - 0900Z. Quiet to unsettled levels occurred during the rest
of the period with active to minor storm levels detected at high
latitudes.
IIB. Prévision de l'activité géophysique
Geomagnetic field activity is
expected to be at quiet to unsettled levels through the period (06 -
08 September) with a chance for active levels on day 1 due to
possible weak coronal hole high-speed stream effects.
III. Probabilité d'éruption solaire du 06 Sep au 08 Sep
| Classe M | 25% | 25% | 20% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 05 Sep 133 Prévisionnel 06 Sep-08 Sep 130/130/125 Moyenne des 90 derniers jours 05 Sep 124
V. Indice géomagnetique A
Observé Afr/Ap 04 Sep 014/016 Estimé Afr/Ap 05 Sep 021/029 Prévisionnel Afr/Ap 06 Sep-08 Sep 008/010-007/008-007/007
VI. Probabilités d'activité géomagnétique du 06 Sep au 08 Sep
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 15% | 15% | 10% |
| Tempête mineure | 05% | 01% | 01% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 15% | 15% | 20% |
| Tempête mineure | 20% | 25% | 20% |
| Tempête majeure/sévère | 25% | 20% | 10% |
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