Affichage des archives de jeudi, 17 octobre 2002
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 2002 Oct 17 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 290 publié à 2200Z le 17 Oct 2002IA. Analyse des régions solaires actives et activité du 16-2100Z au 17-2100Z Solar activity was at low levels. Region 158 (S08E11)
produced the largest flare of the period which was a C3.5/Sf that
occurred at 17/1207 UTC. Penumbral growth was seen in the trailing
cluster of spots in this northeast-southwest orientated spot
complex. A weak gamma magnetic structure also became evident today.
Several lesser C-class flares were also attributed to this region.
Region 149 (N14W33) showed slight decay and produced a single
optically correlated long duration event, flare maximum reached
C3.0/Sf at 17/1805 UTC. Weak magnetic gamma structure seen
yesterday is no longer apparent. New region 162 (N25E76) was
assigned today.
IB. Prévisions d'activité solaire
Solar activity is expected to be at
low levels. Region 149 and 158 are capable of producing low level
M-class flare activity.
IIA. Résumé de l'activité géophysique du 16-2100Z au 17-2100Z
The geomagnetic field activity was at quiet to active levels. An
isolated active period occurred between 17/0000-0300 UTC at high
latitudes.
IIB. Prévision de l'activité géophysique
The geomagnetic field activity
is expected to be predominantly quiet to unsettled. Active
conditions are possible on day one due to elevated solar wind speed.
Day three may see active conditions in response to a relatively
small, yet favorably positioned coronal hole.
III. Probabilité d'éruption solaire du 18 Oct au 20 Oct
| Classe M | 40% | 40% | 40% |
| Classe X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 17 Oct 179 Prévisionnel 18 Oct-20 Oct 185/185/180 Moyenne des 90 derniers jours 17 Oct 182
V. Indice géomagnetique A
Observé Afr/Ap 16 Oct 009/014 Estimé Afr/Ap 17 Oct 010/015 Prévisionnel Afr/Ap 18 Oct-20 Oct 010/015-008/012-010/015
VI. Probabilités d'activité géomagnétique du 18 Oct au 20 Oct
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 15% | 20% |
| Tempête mineure | 05% | 01% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 25% | 30% |
| Tempête mineure | 10% | 05% | 10% |
| Tempête majeure/sévère | 05% | 01% | 05% |
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