Affichage des archives de mercredi, 12 décembre 2001
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 2001 Dec 12 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 346 publié à 2200Z le 12 Dec 2001IA. Analyse des régions solaires actives et activité du 11-2100Z au 12-2100Z Solar activity decreased to moderate levels. Region
9733 (N14E18) produced an M3/1n flare at 12/1911 UTC associated with
a 420 sfu Tenflare. This large, complex spot group remained in a
growth phase with a delta magnetic configuration observed within its
northernmost trailer spots. Region 9727 (S21W52) produced occasional
subflares, the largest of which was a C9 at 12/2024 UTC. This region
also grew during the period and remained large and complex with
delta magnetic configurations in its interior and trailer spots.
Region 9736 (S09W55) showed minor growth during the period and
produced isolated C-class subflares. New Region 9738 (S21E67) was
numbered.
IB. Prévisions d'activité solaire
Solar activity is expected to be at
moderate to high levels with isolated, low-level M-class flares
likely. There will also be a chance for a major flare from Regions
9727 or 9733.
IIA. Résumé de l'activité géophysique du 11-2100Z au 12-2100Z
Geomagnetic field activity ranged from quiet to minor storm levels.
Unsettled to minor storm levels occurred during 12/0900 - 1200 UTC.
ACE data suggest a solar sector boundary crossing (positive- to
negative-polarity) as the cause for this brief period of increased
activity. Mostly quiet levels occurred during the remainder of the
period.
IIB. Prévision de l'activité géophysique
Geomagnetic field activity is
expected to be at quiet to unsettled levels during most of the
period. However, brief active periods will be possible during 14 -
15 December due to coronal hole effects. There will be a chance for
a proton flare from Regions 9727 or 9733.
III. Probabilité d'éruption solaire du 13 Dec au 15 Dec
| Classe M | 80% | 80% | 80% |
| Classe X | 20% | 20% | 20% |
| Proton | 20% | 20% | 20% |
| PCAF | yellow | ||
IV. Flux Penticton 10.7 cm
Observé 12 Dec 237 Prévisionnel 13 Dec-15 Dec 220/220/210 Moyenne des 90 derniers jours 12 Dec 219
V. Indice géomagnetique A
Observé Afr/Ap 11 Dec 003/004 Estimé Afr/Ap 12 Dec 012/012 Prévisionnel Afr/Ap 13 Dec-15 Dec 012/012-012/015-012/015
VI. Probabilités d'activité géomagnétique du 13 Dec au 15 Dec
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 20% | 20% |
| Tempête mineure | 10% | 10% | 10% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 25% | 25% | 25% |
| Tempête mineure | 15% | 15% | 15% |
| Tempête majeure/sévère | 05% | 05% | 01% |
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