Affichage des archives de vendredi, 18 février 2011
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 2011 Feb 18 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 049 publié à 2200Z le 18 Feb 2011IA. Analyse des régions solaires actives et activité du 17-2100Z au 18-2100Z Solar activity was high during the past 24 hours.
Region 1158 (S19W64) produced several C-class events with a C1 at
17/2135Z that was associated with a Type II Sweep and an M1 event at
18/1303Z. Region 1161 (N12W02) grew slightly in area and maintained
a beta-gamma magnetic classification. New Region 1162 (N18W06) was
numbered today and developed rapidly into a Dai-type sunspot group
with a beta-gamma magnetic classification. The bulk of the activity
originated from this new region, including two M1 events and an M6
event at 18/1011Z.
IB. Prévisions d'activité solaire
Solar activity is expected to be
moderate with a chance for isolated high level activity for the next
three days (19-21 February).
IIA. Résumé de l'activité géophysique du 17-2100Z au 18-2100Z
The geomagnetic field was unsettled to active with an isolated minor
storm period at high latitudes. This activity was due to the
effects of the CMEs associated with two M-class events and an
X-class event observed from 13-15 February. A sudden impulse of 33
nT was observed at 18/0136Z at the Boulder magnetometer in
association with this event. The ACE spacecraft indicated solar wind
velocities increased to approximately 700 km/s along with a
sustained period of southward Bz between -10 and -15 nT from
18/0200-0300Z.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be quiet to unsettled with a chance for isolated active
periods for day one (19 February) due to the residual effects of the
recent CMEs. Days two and three (20-21 February) are expected to be
mostly quiet.
III. Probabilité d'éruption solaire du 19 Feb au 21 Feb
| Classe M | 75% | 75% | 75% |
| Classe X | 15% | 15% | 15% |
| Proton | 10% | 10% | 10% |
| PCAF | Green | ||
IV. Flux Penticton 10.7 cm
Observé 18 Feb 125 Prévisionnel 19 Feb-21 Feb 120/120/110 Moyenne des 90 derniers jours 18 Feb 086
V. Indice géomagnetique A
Observé Afr/Ap 17 Feb 005/002 Estimé Afr/Ap 18 Feb 018/022 Prévisionnel Afr/Ap 19 Feb-21 Feb 010/012-005/005-005/005
VI. Probabilités d'activité géomagnétique du 19 Feb au 21 Feb
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 25% | 15% | 05% |
| Tempête mineure | 10% | 05% | 01% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 25% | 20% | 05% |
| Tempête mineure | 10% | 05% | 01% |
| Tempête majeure/sévère | 01% | 01% | 01% |
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La Météo Spatiale en faits
| Dernière classe X | 28/03/2024 | X1.1 |
| Dernière classe M | 19/04/2024 | M1.0 |
| Dernier orage géomagnétique | 19/04/2024 | Kp7 (G3) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
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| mars 2024 | 104.9 -19.8 |