Affichage des archives de jeudi, 22 juillet 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 Jul 22 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 204 publié à 2200Z le 22 Jul 2004IA. Analyse des régions solaires actives et activité du 21-2100Z au 22-2100Z Solar activity has been high. Region 652 (N08E06)
produced a M9.1 flare at 22/0032 UTC as well as several C-class
flares from 0633 to 0808 UTC. A CME was observed shortly after the
M9 flare on LASCO emerging southward, although it was not earthward
directed. Two coronal mass ejections occurred simultaneously to
form a faint full-halo CME observed on LASCO imagery. These CMEs
may be associated with one or more of the previously mentioned
C-class flares. Region 652 was observed to decay slightly over the
past 24 hours while maintaining its beta-gamma-delta magnetic
classification. No new regions were numbered today.
IB. Prévisions d'activité solaire
Solar activity is expected to be
moderate to high. Region 652 maintains its potential to produce
major flare activity.
IIA. Résumé de l'activité géophysique du 21-2100Z au 22-2100Z
The geomagnetic field has been quiet to active. A geomagnetic sudden
impulse was observed at 1028 UTC with a 25 nanoTesla deviation.
Unsettled to active geomagnetic conditions have been observed since
the sudden impulse. Solar wind speed at ACE steadily increased
after the sudden impulse from 400 km/s to 700 km/s. Bz maintained a
steady southward orientation, up to as much as -19 nT.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be quiet to active tomorrow (23 July) from the continued
effects of the CME arrival already observed, and the possible
arrival of another CME shock on late 23 July from the CME observed
on LASCO today. Activity should subside to quiet to unsettled
levels on 24-25 July.
III. Probabilité d'éruption solaire du 23 Jul au 25 Jul
| Classe M | 70% | 70% | 70% |
| Classe X | 20% | 20% | 20% |
| Proton | 15% | 15% | 15% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 22 Jul 173 Prévisionnel 23 Jul-25 Jul 170/160/160 Moyenne des 90 derniers jours 22 Jul 098
V. Indice géomagnetique A
Observé Afr/Ap 21 Jul 005/006 Estimé Afr/Ap 22 Jul 010/012 Prévisionnel Afr/Ap 23 Jul-25 Jul 020/025-010/015-008/010
VI. Probabilités d'activité géomagnétique du 23 Jul au 25 Jul
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 40% | 30% | 20% |
| Tempête mineure | 30% | 20% | 10% |
| Tempête majeure/sévère | 10% | 05% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 40% | 30% | 20% |
| Tempête mineure | 35% | 25% | 20% |
| Tempête majeure/sévère | 15% | 10% | 05% |
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