Affichage des archives de mardi, 25 mai 2004
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 2004 May 25 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 146 publié à 2200Z le 25 May 2004IA. Analyse des régions solaires actives et activité du 24-2100Z au 25-2100Z Solar activity was at low levels. Region 615 (N17W53)
produced the largest flare of the period, a C1 x-ray event that
occurred at 24/2239Z. Region 618 (S10W00) was limited to B-class
flare production this period while two delta structures remain
evident across the magnetic region center in this beta-gamma-delta
complex. Little change was noted in sunspot area today. A 20
degree filament that was seen near the north-center of the disk
became active just before 24/1800Z, and had fully erupted by
24/1930Z. This disappearing filament resulted in a northward
directed CME as seen on LASCO imagery and appears to have little
geoeffective potential. No new regions were numbered today.
IB. Prévisions d'activité solaire
Solar activity is expected to be at
low to moderate levels. Region 618 remains capable of producing
isolated M-class flare activity.
IIA. Résumé de l'activité géophysique du 24-2100Z au 25-2100Z
The geomagnetic field was at quiet to unsettled levels.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be at quiet to unsettled levels throughout the period.
NOTE: The ACE spacecraft orbit will bring ACE nearly in line with
the Sun from about May 30 to June 2, 2004. During that time solar
radio noise is expected to interfere with spacecraft telemetry
resulting in the loss of solar wind plasma, magnetic field, and
particle data.
III. Probabilité d'éruption solaire du 26 May au 28 May
| Classe M | 50% | 50% | 50% |
| Classe X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 25 May 102 Prévisionnel 26 May-28 May 100/100/105 Moyenne des 90 derniers jours 25 May 105
V. Indice géomagnetique A
Observé Afr/Ap 24 May 008/011 Estimé Afr/Ap 25 May 007/010 Prévisionnel Afr/Ap 26 May-28 May 007/010-010/010-010/010
VI. Probabilités d'activité géomagnétique du 26 May au 28 May
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 15% | 20% | 20% |
| Tempête mineure | 05% | 10% | 10% |
| Tempête majeure/sévère | 05% | 05% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 20% | 20% | 20% |
| Tempête mineure | 10% | 10% | 10% |
| Tempête majeure/sévère | 05% | 05% | 05% |
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