Affichage des archives de samedi, 22 avril 2006
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 2006 Apr 22 2203 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 112 publié à 2200Z le 22 Apr 2006IA. Analyse des régions solaires actives et activité du 21-2100Z au 22-2100Z Solar activity was low. A C2 x-ray flare which reached
maximum at 1639UTC was the largest event of the day. B-class flares
were more numerous and all activity was seen to be centered on
active regions just rotating onto the disk in the southern
hemisphere. The sole spot group, Region 874 (S02W39), was quiet as
it continued to decay.
IB. Prévisions d'activité solaire
Solar activity is expected to be very
low to low. Expect isolated C-class flares during the next three
days.
IIA. Résumé de l'activité géophysique du 21-2100Z au 22-2100Z
The geomagnetic field was moderately disturbed early in the period,
as conditions ranged from active to brief major storming at high
latitudes. This activity was due to strong Alfven waves in the solar
wind that caused periods of southward IMF to reach -15 nT at
times. The solar wind returned to more normal conditions during the
last 12 hours.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be mostly unsettled during the interval. Brief active
conditions may occur in the near term as the solar wind speed,
though decreasing, is still above 500 km/s.
III. Probabilité d'éruption solaire du 23 Apr au 25 Apr
| Classe M | 05% | 05% | 05% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 22 Apr 082 Prévisionnel 23 Apr-25 Apr 085/085/085 Moyenne des 90 derniers jours 22 Apr 078
V. Indice géomagnetique A
Observé Afr/Ap 21 Apr 006/008 Estimé Afr/Ap 22 Apr 015/020 Prévisionnel Afr/Ap 23 Apr-25 Apr 010/010-005/008-005/008
VI. Probabilités d'activité géomagnétique du 23 Apr au 25 Apr
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 40% | 20% | 20% |
| Tempête mineure | 05% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 50% | 30% | 30% |
| Tempête mineure | 10% | 10% | 10% |
| Tempête majeure/sévère | 01% | 01% | 01% |
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