Affichage des archives de dimanche, 7 septembre 2003
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 2003 Sep 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 250 publié à 2200Z le 07 Sep 2003IA. Analyse des régions solaires actives et activité du 06-2100Z au 07-2100Z Solar activity was low. A long-duration C5 flare
occurred at 07/1407Z in Region 450 (S17W63). This flare was
characterized in H-alpha imagery by several prolonged bright kernels
in ribbon form along a thin NW-SE filament. This event appeared to
trigger a large 19 degree filament eruption near S38W18. Minor
centimetric radio bursts also accompanied this event, and LASCO
imagery revealed a large CME in progress. The X-ray flux was still
considerably enhanced by the end of the period. Region 450 is a
small, simple beta group in decay. The remaining active regions
were either stable or in decay.
IB. Prévisions d'activité solaire
Solar activity is expected to be low
to very low. The current X-ray flux levels are elevated following
today's eruption, but are expected to return to the pre-flare
background level early in the period. Very isolated low C-class
flares are possible.
IIA. Résumé de l'activité géophysique du 06-2100Z au 07-2100Z
The geomagnetic field was quiet to unsettled. Solar wind speed has
declined to below 450 km/s. The greater than 2 MeV electron flux at
geosynchronous orbit was at high levels.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to continue at quiet to unsettled levels through day one. A
recurring high speed coronal hole stream will likely produce active
to minor storm periods on days two and three. Activity on day three
may be further enhanced by transient material from today's CME off
the SW limb.
III. Probabilité d'éruption solaire du 08 Sep au 10 Sep
| Classe M | 05% | 05% | 05% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 07 Sep 108 Prévisionnel 08 Sep-10 Sep 100/095/095 Moyenne des 90 derniers jours 07 Sep 125
V. Indice géomagnetique A
Observé Afr/Ap 06 Sep 007/012 Estimé Afr/Ap 07 Sep 008/010 Prévisionnel Afr/Ap 08 Sep-10 Sep 012/012-015/015-020/025
VI. Probabilités d'activité géomagnétique du 08 Sep au 10 Sep
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 25% | 35% | 40% |
| Tempête mineure | 10% | 15% | 20% |
| Tempête majeure/sévère | 01% | 05% | 10% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 40% | 50% |
| Tempête mineure | 15% | 20% | 30% |
| Tempête majeure/sévère | 05% | 10% | 15% |
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