Affichage des archives de samedi, 14 avril 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 Apr 14 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 105 publié à 2200Z le 14 Apr 2012IA. Analyse des régions solaires actives et activité du 13-2100Z au 14-2100Z Solar activity was very low. Region 1455 (N06W34)
produced occasional B-class x-ray flares during the first half of
the period. Region 1455 showed minor spot and penumbral decay during
the period and simplified from a beta-gamma to a beta magnetic
classification. New Regions 1458 (N07E70) and 1459 (S15E79) were
numbered. Neither were remarkable, but analysis was hampered due to
limb proximity. There were no Earth-directed CMEs observed during
the period.
IB. Prévisions d'activité solaire
Solar activity is expected to be very
low during days 1 - 3 (15 - 17 April) with a chance for isolated
C-class flares.
IIA. Résumé de l'activité géophysique du 13-2100Z au 14-2100Z
Geomagnetic field activity was at quiet to active levels. ACE solar
wind observations indicated the continued presence of a coronal hole
high-speed stream (CH HSS) with speeds in the 499 to 614 km/s range.
The greater than 2 MeV electron flux at geosynchronous orbit reached
high levels during the period.
IIB. Prévision de l'activité géophysique
Geomagnetic field activity is
expected to be at quiet to unsettled levels on day 1 (15 April) with
a chance for active levels due to persistent CH HSS effects.
Activity is expected to decrease to mostly quiet levels during days
2 - 3 (16 - 17 April) as the CH HSS subsides.
III. Probabilité d'éruption solaire du 15 Apr au 17 Apr
| Classe M | 05% | 05% | 05% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 14 Apr 098 Prévisionnel 15 Apr-17 Apr 100/100/100 Moyenne des 90 derniers jours 14 Apr 113
V. Indice géomagnetique A
Observé Afr/Ap 13 Apr 013/022 Estimé Afr/Ap 14 Apr 008/012 Prévisionnel Afr/Ap 15 Apr-17 Apr 010/010-004/005-004/005
VI. Probabilités d'activité géomagnétique du 15 Apr au 17 Apr
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 25% | 15% | 15% |
| Tempête mineure | 10% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 40% | 20% | 20% |
| Tempête mineure | 15% | 10% | 10% |
| Tempête majeure/sévère | 05% | 01% | 01% |
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