Affichage des archives de lundi, 16 janvier 2012
Rapport d'activité solaire
Chaque éruption solaire mentionnée dans ce rapport a été ajustée selon un facteur d'échelle fourni par le Space Weather Prediction Center (SWPC). Ce facteur a conduit à une sous-estimation de 42% des éruptions solaires par rapport aux données de qualité scientifique. Nous avons supprimé ce facteur d'échelle de nos données archivées pour refléter les véritables unités physiques.
Rapport d'activité solaire et géophysique 2012 Jan 16 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 016 publié à 2200Z le 16 Jan 2012IA. Analyse des régions solaires actives et activité du 15-2100Z au 16-2100Z Solar activity was at low levels. Region 1402 (N28E53)
produced a long duration event (LDE) early on 16 January. The LDE
began at 16/0236Z, reached a maximum at 16/0444Z and ended at
16/0646Z. A partial-halo CME was seen lifting off the ENE limb,
first observed in LASCO C2 imagery at 16/0342Z with an initial
radial velocity of about 793 km/s. Model output indicated the
potential for a glancing blow from the CME beginning late on 19
January. Other activity included a C5/Sf flare from Region 1401
(N17E51) at 16/1038Z. Both Region 1401 and 1402 doubled in area as
they continued to rotate onto the visible disk. New Region 1404
(N12W29) emerged on the disk as a D-type group, while new Region
1405 (N13E65) rotated onto the disk as an H-type group.
IB. Prévisions d'activité solaire
Solar activity is expected to be at
low levels with a chance for M-class activity for the next three
days (17 - 19 January), particularly from the east limb complex of
spots.
IIA. Résumé de l'activité géophysique du 15-2100Z au 16-2100Z
The geomagnetic field was at predominately quiet to unsettled levels
with isolated intervals of active to minor storm conditions at high
latitudes. Solar wind velocities, as measured at the ACE
spacecraft, ranged between 350 - 400 km/s through 16/0900Z. At that
point, a gradual increase in wind speeds to about 500 km/s was
observed with a corresponding southward dip to near -10 nT in the Bz
component of the interplanetary magnetic field.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be at mostly quiet to unsettled levels, with isolated
active periods, on day one (17 January). Day two (18 January)
should see a return to mostly quiet levels. By day three (19
January), the field is expected to be at mostly quiet levels through
a majority of the day. Late on 19 January, an increase to quiet to
unsettled levels, with isolated active periods, are expected due to
anticipated effects from a glancing blow from the 16 January CME.
III. Probabilité d'éruption solaire du 17 Jan au 19 Jan
| Classe M | 25% | 25% | 25% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 16 Jan 140 Prévisionnel 17 Jan-19 Jan 145/150/155 Moyenne des 90 derniers jours 16 Jan 144
V. Indice géomagnetique A
Observé Afr/Ap 15 Jan 004/002 Estimé Afr/Ap 16 Jan 008/008 Prévisionnel Afr/Ap 17 Jan-19 Jan 008/008-005/005-006/006
VI. Probabilités d'activité géomagnétique du 17 Jan au 19 Jan
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 15% | 05% | 10% |
| Tempête mineure | 05% | 01% | 01% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 20% | 10% | 15% |
| Tempête mineure | 10% | 01% | 05% |
| Tempête majeure/sévère | 05% | 01% | 01% |
Toutes les heures sont indiquées en UTC
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La Météo Spatiale en faits
| Dernière classe X | 08/12/2025 | X1.1 |
| Dernière classe M | 31/12/2025 | M7.11 |
| Dernier orage géomagnétique | 02/01/2026 | Kp5 (G1) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
| Nombre mensuel moyen de taches solaires | |
|---|---|
| décembre 2025 | 124 +32.2 |
| janvier 2026 | 110 -14 |
| 30 derniers jours | 104.3 -5.3 |