Affichage des archives de samedi, 7 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 07 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 098 publié à 2200Z le 07 Apr 2012IA. Analyse des régions solaires actives et activité du 06-2100Z au 07-2100Z Solar activity was low. Region 1452 (N17W23) produced a
C2 x-ray flare and occasional B-class flares. It gradually decayed
to a small B-type group during the period. Region 1450 (N15W59)
gradually decayed to a C-type group during the period and produced
an isolated B-class flare. However, it retained a beta-gamma
magnetic configuration. No new regions were numbered.
IB. Prévisions d'activité solaire
Solar activity is expected to be very
low to low during days 1 - 3 (08 - 10 April) with isolated C-class
flares likely from Region 1452.
IIA. Résumé de l'activité géophysique du 06-2100Z au 07-2100Z
The geomagnetic field was quiet to active with minor to major storm
periods at high latitudes during 07/0900 - 1500Z. This activity was
associated with a period of sustained southward IMF Bz, enhanced IMF
Bt, and increased solar wind speeds.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be at mostly quiet levels until late on day 1 (08
April). A CME passage is expected to commence late on day 1 (from
the partial-halo CME observed on 05 April). Consequently, activity
is expected to increase to unsettled levels beginning late on day 1
and continue until early on day 3 (10 April). There will also be a
chance for active levels on day 2 (09 April) along with a chance for
minor storm levels at high latitudes. Activity is expected to
decrease to quiet to unsettled levels on day 3 as CME effects
subside.
III. Probabilité d'éruption solaire du 08 Apr au 10 Apr
| Classe M | 05% | 05% | 05% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Flux Penticton 10.7 cm
Observé 07 Apr 099 Prévisionnel 08 Apr-10 Apr 100/100/100 Moyenne des 90 derniers jours 07 Apr 116
V. Indice géomagnetique A
Observé Afr/Ap 06 Apr 003/004 Estimé Afr/Ap 07 Apr 010/010 Prévisionnel Afr/Ap 08 Apr-10 Apr 008/010-013/015-006/008
VI. Probabilités d'activité géomagnétique du 08 Apr au 10 Apr
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 10% | 25% | 10% |
| Tempête mineure | 01% | 15% | 01% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 15% | 30% | 15% |
| Tempête mineure | 10% | 25% | 10% |
| Tempête majeure/sévère | 05% | 10% | 05% |
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