Affichage des archives de vendredi, 12 mars 2010
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 2010 Mar 12 2201 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 071 publié à 2200Z le 12 Mar 2010IA. Analyse des régions solaires actives et activité du 11-2100Z au 12-2100Z Solar activity was low due to a C2/Sf flare at 12/1827Z
from Region 1054 (N15E29). Region 1054 continues to show a slow
growth trend. Region 1055 (S24W27) was quiet and mostly unchanged
during the past 24 hours. A CME was observed on the east limb at
about 11/2330Z and appeared to be associated with the eruption of a
filament in the northeast quadrant.
IB. Prévisions d'activité solaire
Solar activity is expected to be low.
Additional C-flares are likely from Region 1054. There is a slight
chance for an isolated M-class event from this region.
IIA. Résumé de l'activité géophysique du 11-2100Z au 12-2100Z
The geomagnetic field was mostly quiet to unsettled at mid-latitudes,
with one active period at some stations from 0300-0600Z. The high
latitudes observed quiet to active levels with some isolated storm
periods between 0300-0600Z, and from 1200-1500Z. Solar wind
velocities remained elevated through the period, generally ranging
between 500-580 km/s. There appeared to be a decreasing trend during
the last 4 hours of the period, with day-end speed values around 480
km/s. The solar wind signatures are consistent with a high speed
stream from the southward extension of the northern polar coronal
hole. The greater than 2 MeV electron flux reached high levels
during the period.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be mostly unsettled with a chance for isolated active
periods for the first day (13 March) due to persistence. Quiet to
unsettled levels (with a chance for active periods) are expected on
days two and three (14-15 March) due to possible effects from a
recurrent solar sector boundary.
III. Probabilité d'éruption solaire du 13 Mar au 15 Mar
| Classe M | 10% | 10% | 10% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 12 Mar 090 Prévisionnel 13 Mar-15 Mar 092/094/095 Moyenne des 90 derniers jours 12 Mar 082
V. Indice géomagnetique A
Observé Afr/Ap 11 Mar 009/009 Estimé Afr/Ap 12 Mar 009/009 Prévisionnel Afr/Ap 13 Mar-15 Mar 010/010-007/007-007/007
VI. Probabilités d'activité géomagnétique du 13 Mar au 15 Mar
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 30% | 25% | 25% |
| Tempête mineure | 05% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 35% | 30% | 30% |
| Tempête mineure | 15% | 15% | 15% |
| Tempête majeure/sévère | 05% | 05% | 05% |
Toutes les heures sont indiquées en UTC
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