Affichage des archives de jeudi, 1 décembre 2005
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 2005 Dec 01 2204 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 335 publié à 2200Z le 01 Dec 2005IA. Analyse des régions solaires actives et activité du 30-2100Z au 01-2100Z Solar activity decreased to low levels today. Region
826 (S02E22) continued to show explosive growth in both magnetic
complexity and sunspot area. Magnetic analysis shows a strong
east-west neutral line through the delta spot in the geometric
center of the sunspot cluster. Region 826 produced multiple B and
C-class flares during the period, the largest was a C6 x-ray flare
occurring at 01/0837Z. Region 824 (S14W75) underwent little change
since yesterday but did produce a C2 x-ray flare at 01/0238Z, which
had an associated Type II radio sweep with an estimated shock
velocity of 487 km/sec. Region 828 (S04E42) is a rapidly emerging
DSO beta group that was numbered today.
IB. Prévisions d'activité solaire
Solar activity is expected to be at
low to moderate levels. Region 826 has the potential to produce
M-class flare activity.
IIA. Résumé de l'activité géophysique du 30-2100Z au 01-2100Z
The geomagnetic field was at quiet to active levels. The elevated
conditions are due to a recurrent high speed coronal hole stream.
The solar wind speed has ranged between 650 and 750 km/sec
throughout most of the period.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be at predominantly quiet to unsettled levels with
isolated active conditions on 02 December due to a favorability
positioned coronal hole. Conditions should decrease to quiet to
unsettled levels on 03 and 04 December.
III. Probabilité d'éruption solaire du 02 Dec au 04 Dec
| Classe M | 50% | 50% | 50% |
| Classe X | 15% | 15% | 15% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 01 Dec 098 Prévisionnel 02 Dec-04 Dec 100/105/105 Moyenne des 90 derniers jours 01 Dec 085
V. Indice géomagnetique A
Observé Afr/Ap 30 Nov 009/010 Estimé Afr/Ap 01 Dec 010/012 Prévisionnel Afr/Ap 02 Dec-04 Dec 012/015-010/012-005/008
VI. Probabilités d'activité géomagnétique du 02 Dec au 04 Dec
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 25% | 20% | 15% |
| Tempête mineure | 10% | 05% | 01% |
| Tempête majeure/sévère | 05% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 25% | 20% |
| Tempête mineure | 15% | 10% | 05% |
| Tempête majeure/sévère | 10% | 05% | 01% |
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