Affichage des archives de samedi, 9 juillet 2011
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 2011 Jul 09 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 190 publié à 2200Z le 09 Jul 2011IA. Analyse des régions solaires actives et activité du 08-2100Z au 09-2100Z Solar activity has been at very low levels for the past
24 hours. Region 1247 (S18W02) produced the largest event of the
period, a B4 x-ray event at 09/0028Z. A nearby filament eruption was
associated with this event with a subsequent partial-halo asymmetric
CME, first visible in LASCO C2 imagery at 09/0125Z. This CME does
have an earth directed component. Region 1249 (S16E25) was numbered
early in the period but like many of the numbered regions on the
disk, has remained stable.
IB. Prévisions d'activité solaire
Solar activity is expected to be at
very low to low levels for the next three days (10-12 July).
IIA. Résumé de l'activité géophysique du 08-2100Z au 09-2100Z
The geomagnetic field has been at quiet to active levels of the past
24 hours. The elevated activity was due to a solar sector boundary
(SSB) crossing early in the period. Measurements by the ACE
spacecraft indicate the onset of a coronal hole high speed stream
(CH HSS) with solar wind speeds increasing, from 350 km/s to
around 450 km/s.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be at quiet to unsettled levels for the next two days
(10-11 July) as a CH HSS continues to be geoeffective. On day three
(12 July), coupled with the arrival of another CH HSS, the CME,
observed earlier today, is expected to impact Earth. Since this CME
was only a partial-halo and is not traveling at great speed, only
unsettled to active levels are expected.
III. Probabilité d'éruption solaire du 10 Jul au 12 Jul
| Classe M | 05% | 05% | 05% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Flux Penticton 10.7 cm
Observé 09 Jul 086 Prévisionnel 10 Jul-12 Jul 086/086/088 Moyenne des 90 derniers jours 09 Jul 099
V. Indice géomagnetique A
Observé Afr/Ap 08 Jul 006/008 Estimé Afr/Ap 09 Jul 010/010 Prévisionnel Afr/Ap 10 Jul-12 Jul 007/007-007/007-012/012
VI. Probabilités d'activité géomagnétique du 10 Jul au 12 Jul
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 20% | 30% |
| Tempête mineure | 05% | 05% | 10% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 25% | 25% | 40% |
| Tempête mineure | 05% | 05% | 10% |
| Tempête majeure/sévère | 01% | 01% | 01% |
Toutes les heures sont indiquées en UTC
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